Mark Monterroso

  • Watsonville, CA
  • Emergency medicine physician
NPI1780119743PAC ID1951735935
Medicare services, 2024
1,029
Medicare patients, 2024
687
Part D claims, 2024
333
MIPS score, 2024
97
Hospital affiliations
3
Practice address
75 Nielson Street, Watsonville, CA 95076
Practice phone
Call (831) 724-4741
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Watsonville Community Hospital

Hospital · Watsonville, California

See all 4 affiliations

Find Mark Monterroso's professional email, personal email and mobile number

Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.

View contacts for free

Mark Monterroso is an emergency medicine physician in Watsonville, California

Mark Monterroso practices at Watsonville Community Hospital in Watsonville, California, part of Pajaro Valley Health Care District.

Mark Monterroso's NPI, 1780119743, was assigned on April 27, 2017. Mark Monterroso graduated from Loma Linda University School Of Medicine in 2017. Mark Monterroso holds California license A158668.

NPI and contact details
Medicare PAC ID
1951735935
NPI enumeration date
April 27, 2017
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(831) 724-4741
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
35
Medical school graduation
2017

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Mark Monterroso practices at Watsonville Community Hospital in Watsonville, California

Mark Monterroso's primary practice is Watsonville Community Hospital, at 75 Nielson Street, Watsonville, CA 95076 in Santa Cruz County. The practice phone is (831) 724-4741.

Source: Dmand AI Affiliation Data

Mark Monterroso is affiliated with 3 sites of care and 1 medical group

Mark Monterroso's primary practice is Watsonville Community Hospital in Watsonville, California, part of Pajaro Valley Health Care District. Mark Monterroso is also affiliated with Kaweah Health Medical Center. The medical group on file is Vituity. Dmand AI also links Mark Monterroso to 1 more hospital, named with a free account.

See all 4 affiliations for Mark Monterroso

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Mark Monterroso's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Mark Monterroso practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Watsonville Community HospitalAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Mark Monterroso practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across Pajaro Valley Health Care District and 6.2K+ hospitals, with verified contacts in the same login.

Mark Monterroso is one of 7,423 emergency medicine physicians in California

Emergency medicine is Mark Monterroso's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Mark Monterroso is board certified in emergency medicine by the American Board of Emergency Medicine. Mark Monterroso is licensed in California.

Specialties and state licenses

  • Emergency medicine, CaliforniaPrimaryLicense A158668 · 2018 to 2026 · taxonomy 207P00000X

Emergency medicine physicians near Mark Monterroso

Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Mark Monterroso billed Medicare for 1,029 services in 2024

CMS data shows 1,029 Medicare services from Mark Monterroso across 6 procedure codes in 2024, for 687 Medicare patients. Medicare paid $96,334 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,029
Medicare patients687
Paid by Medicare$96,334
Procedure codes6

Mark Monterroso's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 7562024: 7244%
Tests and treatments
2023: 2702024: 2721%
Imaging
2023: 122024: 33175%

Mark Monterroso compared with the California median for emergency medicine physicians, 2024

  • Mark Monterroso
  • California median
Medicare services
1,029vs 2653.9 times
Medicare patients
687vs 2432.8 times
Part D claims
229vs 623.7 times

Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.

Mark Monterroso's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Mark Monterroso

Need commercial claims for Mark Monterroso?

Medicare shows one payer. Book a meeting to get commercial claims data for Mark Monterroso and other emergency medicine physicians in California.

Book a meeting

Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Mark Monterroso treated 687 Medicare patients in 2024, average age 74

CMS counts 687 Medicare patients who saw Mark Monterroso in 2024. The largest group is 65 to 74, with 245 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 61% are also on Medicaid. Their average risk score is 1.92, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Mark Monterroso's median patient age at 32, with 55% women.

Medicare patients, 2024687
Average age74
Average risk score1.92
Also on Medicaid61%

Mark Monterroso's Medicare patients by age, 2024

Mark Monterroso's Medicare patients by sex, 2024

  • Women37755%
  • Men31045%

Chronic conditions among Mark Monterroso's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol73%
  3. Diabetes51%
  4. Arthritis44%
  5. Chronic kidney disease36%
  6. Mood disorders33%
  7. Ischemic heart disease31%
  8. Anxiety30%

Share of Medicare patients with each condition. A patient can have several.

Mark Monterroso's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 32

Patient panel by sex, all payers

  • Women55%
  • Men44%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Mark Monterroso wrote 333 Medicare Part D claims in 2024

In 2024, Mark Monterroso wrote 333 Medicare Part D claims for 248 patients. 97% of them were for generic drugs. CMS names the drug for 229 of them, across 10 drugs with 11 or more claims each, at $1,428 in total drug cost. In 2023, CMS named 163 claims across 8 drugs.

Part D claims, 2024333
Drugs named by CMS10
Total drug cost$1,428
Part D patients248

Mark Monterroso's Part D claims by kind of drug, 2024

  • Generic323 claims97%
  • Brand-name and other10 claims3%

Mark Monterroso's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Mark Monterroso's Part D claims, 2024

  • Opioids11%37 of 333 claims
  • Antibiotics55%182 of 333 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1632024: 22940%

Drugs named by CMS: 10 in 2024, 8 in 2023.

See all prescribing by Mark Monterroso

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Mark Monterroso scored 97 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Mark Monterroso for performance year 2024, reported as part of a group. Mark Monterroso accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Mark Monterroso's MIPS scores, performance year 2024

  • 97of 100Final score
  • 90of 100Quality
  • 40of 100Improvement Activities
  • 78of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

For MedTech and pharma teams

Find emergency medicine physicians like Mark Monterroso by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Mark Monterroso received $51 in industry payments from 2024 to 2025

CMS Open Payments shows 2 general payments to Mark Monterroso from 2 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $28.

General payments to Mark Monterroso by program year, 2024 to 2025

Companies that paid Mark Monterroso the most, 2024 to 2025

Share is of all general payments to this clinician.

See all payments to Mark Monterroso

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Mark Monterroso graduated from Loma Linda University School Of Medicine

Mark Monterroso graduated from Loma Linda University School Of Medicine in 2017.

  1. Medical schoolLoma Linda University School Of Medicine
  2. Board certified in emergency medicineAmerican Board of Emergency Medicine

Source: Dmand AI Professional Profile Data

Mark Monterroso accepts plans from 1 insurance carrier

Mark Monterroso is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.

  • CMS Medicare

Source: Dmand AI Insurance Network Data

Sources for Mark Monterroso's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Mark Monterroso

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Mark Monterroso's NPI number?

Mark Monterroso's NPI number is 1780119743. It was assigned on April 27, 2017, and it is active in the NPI Registry.

What does Mark Monterroso specialize in?

Mark Monterroso is an emergency medicine physician in Watsonville, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Mark Monterroso practice?

Mark Monterroso practices at 75 Nielson Street, Watsonville, CA 95076. Mark Monterroso's primary practice is Watsonville Community Hospital in Watsonville, California, part of Pajaro Valley Health Care District. Dmand AI also links Mark Monterroso to 1 hospital.

What is Mark Monterroso's office phone number?

The practice phone on file for Mark Monterroso is (831) 724-4741.

What is Mark Monterroso's medical license number?

Mark Monterroso holds California license A158668.

Which hospitals is Mark Monterroso affiliated with?

Mark Monterroso practices at Watsonville Community Hospital in Watsonville, California. Mark Monterroso is also affiliated with Kaweah Health Medical Center. Dmand AI links Mark Monterroso to 1 more hospital.

What medical group is Mark Monterroso part of?

Mark Monterroso is linked to Vituity.

Does Mark Monterroso accept Medicare?

Yes. CMS data shows Mark Monterroso billed Medicare for 1,029 services in 2024, and Mark Monterroso accepts Medicare assignment.

What is Mark Monterroso's MIPS score?

Mark Monterroso's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.

How many Medicare patients does Mark Monterroso see?

CMS counts 687 Medicare patients who saw Mark Monterroso in 2024, with an average age of 74.

Show 7 more questionsShow fewer questions

Is Mark Monterroso board certified?

Yes. Mark Monterroso is board certified in emergency medicine by the American Board of Emergency Medicine.

What services does Mark Monterroso bill to Medicare?

In 2024, Mark Monterroso's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).

Where did Mark Monterroso go to medical school?

Mark Monterroso graduated from Loma Linda University School Of Medicine in 2017.

What drugs does Mark Monterroso prescribe most?

In 2024 Medicare Part D data, Mark Monterroso's most prescribed drugs by claims were Cephalexin, Cefdinir and Amoxicillin-Clavulanate Potass.

Has Mark Monterroso received payments from drug or device companies?

CMS Open Payments shows $51 in general payments to Mark Monterroso from 2 companies from 2024 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.

How long has Mark Monterroso been practicing?

Mark Monterroso graduated from medical school in 2017, 9 years ago.

What insurance does Mark Monterroso accept?

Mark Monterroso is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.

Selling to emergency medicine practices?

See emergency medicine physicians in California by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

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

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)