Customer story

How NextDimension AI replaced a Clay, Apollo and Smartlead workflow with one platform

NextDimension AI sells AI agents that run the front office of specialty practices. Its commercial team was running outbound on four tools, and one 170-person list came back with 50 usable emails. Eight days after the first call, it moved to Dmand AI.

  • 30 days free
  • Self-serve
  • No credit card

The commercial lead

NextDimension AI

The decision in June 2026

Keep building outbound on four tools, or move the market, contacts and sending into one platform.

  • Workbook and AI columns
  • Practice lists and emails
  • Mailboxes and sending
  • Sales NavigatorExecutives, by hand
Cost of the stackAbout $800 a month
  • 8 daysfrom the first call to buying Dmand AI
  • 4 to 1tools in the outbound workflow
  • Saved $500a month on outbound tools: about $300 now, against an estimated $800 before
  • 50 of 170leads had a usable email in the old workflow

In brief

Situation
NextDimension AI was about to launch its first cold outbound campaign to specialty practices, with most new deals still coming from referrals.
Problem
Its workflow ran across Clay, Apollo, Smartlead and Sales Navigator, with two steps done by hand and three AI columns guessing at practice data, including the EHR.
Decision
After dropping Definitive Healthcare and passing on ZoomInfo, the team stopped building on Clay and moved to one healthcare platform.
Result
Practices filtered by EHR, the physicians and executives at each site of care, their contacts, warm introductions and sending in one Dmand AI login.

The decision point

In June 2026, NextDimension AI was about to start cold outbound on a four-tool stack

NextDimension AI first spoke with Dmand AI in June 2026, on the day it planned to launch its first cold outbound campaign. Most new deals still came from referrals by advisors, investors and customers, and the commercial team wanted a steadier second source of pipeline.

The team had already built an outbound stack: a Clay workbook for research, Apollo for contacts, Smartlead for sending and LinkedIn Sales Navigator for executives. The question was whether to keep improving it or move to one platform, knowing that every switch costs time.

“Every new tool, with all due respect, comes with some new learning curve and challenges.”

Commercial Lead, NextDimension AI

About NextDimension AI

Website
nextdim.io
What it sells
AI agents that run front office work for specialty practices: patient calls, procedure prep and prior authorizations
Sells to
Owner physicians and executives at procedure-heavy specialty practices: GI first, then dermatology, ophthalmology and radiology
Where it started
Gastroenterology, where its flagship customers are
Replaced
Clay, Apollo, Smartlead and LinkedIn Sales Navigator
Published

Used in Dmand AI

The market

NextDimension sells to 7,450 specialty groups, and MSOs own more than 1 in 5 of the large ones

NextDimension’s buyers run procedure-heavy specialty practices, where the front office carries the patient calls, procedure prep and prior authorizations its agents take over: gastroenterology first, then dermatology, ophthalmology and radiology, including groups that private equity owns through a management services organization (MSO).

In Dmand AI, 7,450 single-specialty groups in those four specialties sit outside health systems. 1,881 have 15 or more practitioners, and MSOs own 422 of them.

At each practice the team sells to two groups of people: the physicians who own and run it, and its executives, from the C-suite to operations and IT leaders at manager level and above. Dmand AI holds about 11,000 of those executives at these groups and the organizations that own them.

Where NextDimension’s buyers are

Single-specialty groups outside health systems, one dot per group at its ZIP code, November 2026
Map of the United States with one dot per ophthalmology, radiology, dermatology or gastroenterology group outside health systems, densest in the Northeast, Florida, Texas and California

United States7,450 groups

Point at or tap a state to see its groups, or pick it from the list. Press a specialty to show only its groups.

United States: 7,450 groups
Groups by state
StateOphthalmologyRadiologyDermatologyGastroenterologyTotal
California32623023698890
Florida22620616668666
New York20316013968570
Texas18613716062545
New Jersey108977633314
Pennsylvania122685726273
Illinois99764934258
Michigan98676923257
Georgia57644528194
Virginia60506315188
North Carolina58565518187
Massachusetts64335725179
Ohio70464022178
Arizona47476020174
Maryland59384216155
Colorado44375111143
Louisiana6236349141
Washington5042415138
Tennessee54462511136
Alabama34463011121
Indiana45461710118
Missouri48302911118
Connecticut30412612109
Oregon343122592
South Carolina362030692
Kentucky232821274
Utah321524273
Oklahoma242616470
Mississippi272215367
Nevada232413666
Minnesota281815061
Wisconsin21286661
Arkansas231511655
Kansas24179353
Iowa152214152
Idaho20149649
Nebraska17176040
Alaska7226338
Rhode Island12761035
New Hampshire10145332
Delaware13125131
New Mexico1089229
West Virginia6146329
District of Columbia9312226
Hawaii1634326
Maine10114126
Montana798024
Wyoming1134220
South Dakota844016
Vermont725115
North Dakota730010

Groups drawn on the map, by the state of their ZIP code. The states add up to 7,314: the other 136 groups have no usable ZIP code or are in Puerto Rico, so the national counts above are higher.

Ownership is what a domain list hides. An MSO sits above the practice, and one practice can run several sites under several web domains. Org Hierarchy Explorer shows the MSO, each group it owns and every site under the group.

Large groups owned by an MSO

Single-specialty groups with 15 or more practitioners, by owner, November 2026
  • Owned by an MSO
  • Other owners
  • Dermatology290 groupsOwned by an MSO 34%, Other owners 66%
  • Ophthalmology374 groupsOwned by an MSO 31%, Other owners 69%
  • Gastroenterology172 groupsOwned by an MSO 30%, Other owners 70%
  • Radiology1,045 groupsOwned by an MSO 15%, Other owners 85%
One MSO-owned group in Org Hierarchy Explorer
Harbor GI Partners, a management services organization, owns Alder Creek Gastroenterology, which runs four sites of care: Alder Creek Downtown (office, aldercreekgi.com), Alder Creek North (office, aldercreekgi.com), Alder Creek Endoscopy (ambulatory surgery center, acendoscopy.com) and Alder Creek Digestive Health (office, acdigestive.com).

One practice, three web domains. A list keyed by domain counts it as three accounts and misses the MSO above it.

Who NextDimension sells toAt the group, its sites and its MSO

  • Owner physiciansManaging partners and medical directors
  • C-suiteCEO, COO and CFO
  • Operations leadersPractice administrators and up
  • IT leadersIT managers and up
Example of an MSO-owned GI group in Org Hierarchy Explorer: the MSO, the group it owns and the group’s four sites of care, each with its web domain. The organizations are examples.

The problem

NextDimension’s four-tool workflow found a usable email for 50 of 170 leads

The team built its workflow in a Clay workbook. Getting from a list of practices to a sent email took eight steps across four tools: two of them by hand, and three AI columns guessing at data that a healthcare database already holds.

From a practice list to a sent email, the old way8 steps, 4 tools
StepWhat happenedDone by
Build the practice listExported from Apollo.Apollo
Copy each provider pageBy hand, from each practice website, so the AI would not misread it.By hand
Pull the rosterA Clay AI column turned each page into a list and dropped nurses and other roles.Clay AI column
Pick the decision makersA second, more expensive AI column chose the top five or six people.Clay AI column
Find the executivesBy hand in Sales Navigator, one practice at a time, saved to an Apollo list.By hand
Guess the EHRA third AI column read patient portal links and predicted the vendor.Clay AI column
Find emailsApollo first, then fallback email finders, merged into one column.Apollo
SendA CSV exported to Smartlead, three templated emails three days apart.Smartlead
Result50 usable emails from a 170-person list

The output was thin. On that list the workflow found emails for 100 people, and Smartlead’s check marked half of them invalid. Across target accounts, about 40% of the people the team could name had no working email, and a personal email to a high-priority practice took about an hour of research.

“We know their names, we know who they are, but no great way of getting in front of them.”

Commercial Lead, NextDimension AI

Because the workbook keyed accounts by web domain, a site that belonged to a current customer could also land on the target list.

The options

NextDimension weighed Definitive Healthcare, ZoomInfo, an in-house build and one platform

The team had already dropped Definitive Healthcare after an extensive review, and ZoomInfo was out of budget. It had also started to think about building the missing pieces itself. Meanwhile Clay had become the most expensive part of the stack.

The options, in the commercial lead’s words
OptionIn their wordsOutcome
Keep building on Clay“This is an enterprise tool now. This is not a startup friendly tool anymore.”Dropped
Add ZoomInfo“A bit out of budget.”Passed
Buy Definitive HealthcareDropped after an extensive review.Dropped
Build it in-house“We were thinking of eventually Claude coding our way into this whole thing.”Not needed
Dmand AI“Look, I’m pretty much sold. We should get started.”Chosen

What decided it was a walkthrough of the team’s Clay workbook. Dmand AI answered with the GI market, physician first: gastroenterologists in groups of 10 to 40, at ambulatory surgery centers, each tied to its group and the site where they practice. Within minutes the commercial lead had found an endoscopy center in a region the team was not targeting.

“You are basically saying, go bottoms up, physician to account. We are in the mindset of going account to physician. I can see how bottoms up, you’re able to gather all this additional data, which is actually helpful.”

Commercial Lead, NextDimension AI

The team bought the $249 Kickstarter plan in the app before that call ended.

What they did

NextDimension now works down from the specialty market to each physician and executive, in five steps

Every campaign now runs the same five steps in one Dmand AI login, from the practices worth a call to a first email ready for review.

Find the practices on the EHRs NextDimension’s agents work inside

Lists start in Dmand AI’s medical group search: specialty, size, owner, state and the EHR each group runs. NextDimension’s agents work inside the practice’s own systems, so the EHR filter keeps the list to practices the agents can work in, and the team sees how big a segment is before it spends a credit.

Example of a medical group search in Dmand AI: gastroenterology groups with 15 to 40 practitioners in New York on three selected EHRs, with each group’s owner, kinds of locations and EHR. The groups are examples.
Example of a medical group search in Dmand AI: GI groups of 15 to 40 practitioners in New York, filtered to three EHRs, with each group’s owner, locations and EHR.

Go down to each site of care and the people who work there

Each group opens to its sites of care, from offices to endoscopy centers, and to the MSO above it. Dmand AI ties every physician and executive to the site where they work, not only to the group, and the EHR filter works at that level too: the physicians who practice at sites on a given EHR, and the managing partners, administrators and operations leaders who decide.

Example of a site of care in Dmand AI: Kestrel Digestive Care’s endoscopy center in Saratoga Springs, New York, on athenahealth, with the executives and the physicians who work at that site. The practice and people are examples.
Example of a site of care in Dmand AI: an endoscopy center on athenahealth, with the executives and the physicians who work there.

Get verified contacts for the people who decide

Contacts come from waterfall contact enrichment, which checks healthcare-specific sources in turn for each physician and executive and verifies the email before a sequence sends to it. The team pays for the contacts it picks, not for a list.

40%better healthcare contact coverage than ZoomInfo and Apollo, the tools NextDimension had used or priced for contacts.Dmand AI’s benchmark of waterfall contact enrichment, not a NextDimension result.

Turn advisors into warm introductions with Physician Network Discovery

Introductions from advisors, investors and customers were still NextDimension’s best source of deals, but asking for one depended on who happened to remember whom. On the first call, the commercial lead ran Physician Network Discovery on one of the team’s own physicians and called the result “very, very valuable.”

Now the team adds the physicians it already knows, its physician advisors and the physicians at its customers, and Discover Network lists the physicians they connect to: who trained in the same program, wrote papers together or work at the same group or hospital, with a connection strength from 0 to 100. Before asking for an introduction, the team brings the advisor a short list and one question.

Example of Physician Network Discovery: the profile of a GI group’s managing partner, showing how two of the team’s physician advisors know him, through a fellowship and papers written together, with the strongest path picked. The physicians are examples.
Example of Physician Network Discovery: how two of the team’s physician advisors know a GI group’s managing partner, with the strongest path picked.

“Do you actually know these people?”

Commercial Lead, NextDimension AI, on asking advisors for introductions

The same check runs before the team brings on a new physician advisor, to see which practices that advisor’s network reaches. The team has used Physician Network Discovery regularly since June.

Let Zeus AI SDR draft the first email, sent from domains the team owns

Zeus AI SDR researches each person and practice and drafts the first email from what Dmand AI holds: the role, the site, the EHR and any new signal. The team reviews every draft before it sends. At onboarding, the Dmand AI team set up sending with NextDimension around four choices.

How the team set up sending
  • Domains the team owns

    New domains bought for outbound, so their reputation stays with NextDimension if tools change.

  • Mailboxes warmed up first

    About ten days of slow, rising volume before the first campaign email.

  • A short first email

    Three emails in a sequence. The first one asks a question and carries no links.

  • Senior senders

    Mailboxes for company leaders, since emails from senior people tend to get more replies.

What Zeus used
  1. The right personThe practice administrator runs the front desk the agents take over.
  2. A new siteAn expansion signal on the group’s page.
  3. The EHR at the siteFrom the site’s profile, not a guess from its patient portal.
  4. One question, no linksThe first-email rule the team set at onboarding.
Example of a first email Zeus AI SDR drafted for a practice administrator, with the four facts it used from Dmand AI marked in the text. The practice and people are examples. To Carla Nunez, Practice administrator, Kestrel Digestive Care. Subject: Recall calls across Kestrel’s four sites. Hi Carla, Congratulations on opening the endoscopy center in Saratoga. A fourth site usually means more recall and prep calls at the front desk. Our agents answer those calls inside athenahealth, so your staff keep the workflow they know. How is your team handling recall reminders today? The NextDimension AI team.
Example of a first email Zeus AI SDR drafted for a practice administrator, with the four facts it used from Dmand AI marked in the text. The practice and people are examples.
From first call to first campaign
  1. First callPhysician Network Discovery, tried on one of the team’s physicians, on the day the first cold campaign was due to launch
  2. Next dayA walkthrough of Zeus AI SDR and of asking advisors for introductions
  3. 8 days laterClay workbook review, the GI market by group size, and the plan bought in the app
  4. 3 weeks laterOnboarding: new domains, warmed-up mailboxes and the first campaign
  5. 2 months laterThe co-founder and CEO gives Dmand AI 5 stars in a review on G2

What happened

NextDimension now runs its specialty outbound from one login, for less than half the cost

Clay was the first tool to go, and the other three followed. The practices, the people at each site, their contacts, warm introductions, research and sending now sit in one login, and the money that went to AI columns guessing at rosters and EHRs no longer leaves the budget.

Before and after Dmand AIOld workflow against Dmand AI
  • Monthly cost of outbound tools

    $800Before
    $300After
  • Tools in the workflow

    4Before
    1After
  • Data lookups done by hand

    2Before
    0After
  • AI columns guessing at practice data

    3Before
    0After

Before: monthly list prices for Clay, Apollo, Smartlead and LinkedIn Sales Navigator, and the team’s own counts. After: the Dmand AI Kickstarter plan with mailboxes and domains. Rosters, executives, decision makers and the EHR now come from each group’s and site’s page in Dmand AI instead of copied web pages, Sales Navigator and AI columns.

What changed in NextDimension’s outbound
The jobBeforeWith Dmand AI
Size the marketUnknown: a search showed results, not how many groups existEvery specialty group, by size, owner, EHR and site of care
Define the accountA web domain, sometimes three per practiceThe group, its MSO and its sites of care in Org Hierarchy Explorer
Find the EHRGuessed by an AI column from patient portal linksOn each group’s and site’s profile, and a filter for practices and physicians
Find the peopleSales Navigator by hand, one practice at a timeThe physicians and executives tied to each site of care
Find emailsApollo, then fallback finders, then a separate checkWaterfall contact enrichment, verified before sending
Warm introductionsAsking advisors and investors who they happened to knowA list of who each advisor knows, from Physician Network Discovery
Write and sendCSV export to Smartlead, on a domain Smartlead heldZeus AI SDR drafts, and email goes out from NextDimension’s own domains

I love how it automatically researches prospects and writes hyper-personalized emails, saving me hours every day by eliminating manual research. […] The real value is speed and scale, as I can reach significantly more prospects every week with personalized, high-converting messages that don’t look like generic automated spam.

Simran K.Co-founder & CEO, NextDimension AIVerified review on G2, August 2026
Read the review on G2 (opens in a new tab)
Simran K., Co-founder and CEO of NextDimension AI

Next, the team plans to take the same playbook beyond GI, to the 6,718 dermatology, ophthalmology and radiology groups in its market.

Lessons for your team

Four lessons for small teams selling to specialty practices

  1. Size the market before you build a list

    Work down from specialty, size, owner and EHR to each group and its sites. NextDimension’s market turned out to be four specialties, not one, and at MSO-owned groups the person who decides may sit above the practice.

    Ask your team

    How many practices fit your ideal customer profile, and who owns each one?

  2. Count usable emails, not found emails

    A source that returns plenty of emails can still leave you with few you can send to. Judge a data source by what survives verification, not by how many rows it returns.

    Ask your team

    Of every 100 people on your list, how many can you actually email?

  3. Stop paying AI to guess what healthcare data already holds

    Three of the eight old steps were AI columns guessing at rosters, decision makers and the EHR. A healthcare database already holds those facts at each site of care, so the AI can go to research and writing instead.

    Ask your team

    Which steps in your workflow are guesses at facts you could look up?

  4. Bring advisors a list, not a favor

    An advisor who is asked “do you know anyone at Kestrel?” has to remember. An advisor shown the physicians their training, papers and practices connect them to only has to say yes or no.

    Ask your team

    Which of your advisors’ colleagues are already on your target list?

I like Dmand AI’s extremely curated and comprehensive healthcare database, which you won’t find on any other platform with this level of detail. The ability to filter by specialty, location, independent physician or not, and many others is incredibly useful.

Anupam D.Founder & CEO, StratAnalyze (for Circle Health)Verified review on G2, September 2026
Read the review on G2 (opens in a new tab)
Anupam D., Founder and CEO of StratAnalyze, for Circle Health

I really appreciate Dmand AI’s extensive data coverage. It offers the greatest contact data coverage for doctors, nurses, and other elite healthcare professionals. […] The HCP view is particularly valuable, offering detailed profiles of healthcare professionals, including their work history, medical procedures, and affiliations.

Abhishek M.Program Operation Delivery Manager, RandstadVerified review on G2, September 2026
Read the review on G2 (opens in a new tab)

I find Dmand AI intuitive and straightforward to use. The qualifiers are easy to understand and apply, and the taxonomy and classification fit our segmentation strategy. […] I get the right classifications and qualifiers that conventional prospecting tools like Apollo or ZoomInfo didn’t provide.

Jayesh P.Marvix AIVerified review on G2, October 2026
Read the review on G2 (opens in a new tab)

FAQ

Questions about selling to specialty practices

Can’t find your answer? Email hello@dmand.ai or book a demo with our team.

How do you find specialty practices to sell to?

Search medical groups in Dmand AI by specialty, size, owner, state and EHR, then open each group to see its sites of care, leaders and physicians. Dmand AI holds 7,450 single-specialty gastroenterology, dermatology, ophthalmology and radiology groups outside health systems, and 1,881 of them have 15 or more practitioners.

Who makes buying decisions at a specialty practice?

Two groups of people. The physicians who own and run the practice, such as managing partners and medical directors, and its executives: the C-suite, plus operations leaders from the practice administrator up and IT leaders from IT manager up. At an MSO-owned group, the same executive roles also sit at the MSO. Dmand AI ties each of them to the site of care where they work.

How do you find practices owned by private equity?

Look for the owner, not the practice website. Private equity usually owns practices through a management services organization (MSO). In Dmand AI, filter medical groups by owner, then open the MSO to see every group and site under it. MSOs own 422 of the 1,881 GI, dermatology, ophthalmology and radiology groups with 15 or more practitioners.

How do you find which EHR a practice or physician uses?

Open the group in Dmand AI: each site of care shows its EHR, and EHR is a filter for practices and for physicians, so you can list the groups on one EHR, or the physicians who practice at sites on it, before you write. NextDimension’s old workflow guessed the EHR with an AI column that read each practice’s patient portal links.

How do you get warm introductions to physicians?

Start from the physicians you already know, such as advisors, customers and KOLs. Physician Network Discovery in Dmand AI lists the physicians they trained, worked, published or ran clinical trials with, scores each connection from 0 to 100, and shows how the two know each other, so you can ask your contact about a short list of names instead of a vague favor.

Is there a Clay alternative for healthcare outbound?

Yes. Dmand AI does the jobs NextDimension AI had built in a Clay workbook, starting from a healthcare database instead of AI columns: medical groups with their owners, sites of care, EHR, leaders and physicians, then waterfall contact enrichment, AI research columns, Zeus AI SDR and sequences in one login. NextDimension moved off its Clay workbook eight days after its first call.

What is a Definitive Healthcare alternative for a small sales team?

NextDimension AI dropped Definitive Healthcare after an extensive review and chose Dmand AI, where the market, contacts, research and sending share one login. Plans start at $249 per user per month, and the trial is 30 days free, self-serve, with no credit card.

Your own specialty market

Size your specialty market and reach the people who decide, from one login

Find specialty practices by EHR, size and owner, reach the physicians and executives at each site of care, and send researched first emails without stitching tools together.

  • 30 days free
  • Self-serve
  • No credit card

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