David Mathew Johnston, PA
- Medicare services, 2024
- 241
- Medicare patients, 2024
- 132
- Part D claims, 2024
- 267
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 445 Balltown Rd, Schenectady, NY 12304
- Practice phone
- Call (716) 699-9032
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Wellnow Urgent Care
Schenectady, New York
Find David Johnston'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.
David Mathew Johnston is a physician assistant in Schenectady, New York
David Johnston practices at Wellnow Urgent Care in Schenectady, New York.
David Johnston's NPI, 1417116401, was assigned on June 4, 2008.
- NPI
- 1417116401NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456488378
- NPI enumeration date
- June 4, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (716) 699-9032
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
David Mathew Johnston practices at Wellnow Urgent Care in Schenectady, New York
David Johnston's primary practice is Wellnow Urgent Care, at 445 Balltown Rd, Schenectady, NY 12304 in Schenectady County. The practice phone is (716) 699-9032.
- Wellnow Urgent Care445 Balltown Rd, Schenectady, NY 12304 · Schenectady CountyPhone(716) 699-9032
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
David Mathew Johnston is affiliated with 2 sites of care and 2 medical groups
David Johnston's primary practice is Wellnow Urgent Care in Schenectady, New York. David Johnston is also affiliated with St. Peter's Hospital. The medical group on file is WellNow Urgent Care. Dmand AI also links David Johnston to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at David Mathew Johnston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Johnston practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Wellnow Urgent Care | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
David Mathew Johnston is one of 11,456 physician assistants in New York
Physician assistant is David Johnston's primary specialty in the NPI Registry, under taxonomy code 363A00000X. David Johnston is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). David Johnston has a license on file in New York.
Specialties and state licenses
- Physician assistant, New York
Clinical focus
Dmand AI lists acute sinusitis, acute skin infection, ankle or foot injury, bursitis, chest wall injury, conjunctivitis, contact dermatitis and ear eustachian tube disorders among the conditions David Johnston treats.
Physician assistants near David Johnston
Counts of physician assistants 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
David Mathew Johnston billed Medicare for 241 services in 2024
CMS data shows 241 Medicare services from David Johnston across 9 procedure codes in 2024, for 132 Medicare patients. Medicare paid $10,012 for them. Every service was in an office.
David Johnston's Medicare services by type, 2024
- Office and hospital visits135
- Lab and pathology106
David Johnston compared with the New York median for physician assistants, 2024
- David Johnston
- New York median
- Medicare services
- 241vs 17637% above
- Medicare patients
- 132vs 7869% above
- Part D claims
- 175vs 24529% below
Medians across 6,477 physician assistants in New York with Dmand AI profiles that report each measure.
David Johnston'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.
Need commercial claims for David Johnston?
Medicare shows one payer. Book a meeting to get commercial claims data for David Johnston and other physician assistants in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
David Mathew Johnston treated 132 Medicare patients in 2024, average age 72
CMS counts 132 Medicare patients who saw David Johnston in 2024. The largest group is 65 to 74, with 56 patients. 74% of them have high cholesterol, and 67% have high blood pressure. 18% are also on Medicaid. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Johnston's median patient age at 35, with 59% women.
David Johnston's Medicare patients by age, 2024
David Johnston's Medicare patients by sex, 2024
- Women9874%
- Men3426%
Chronic conditions among David Johnston's Medicare patients, 2024
- High cholesterol74%
- High blood pressure67%
- Arthritis39%
- Diabetes31%
- Mood disorders29%
- Anxiety27%
- Depression24%
- Ischemic heart disease22%
Share of Medicare patients with each condition. A patient can have several.
David Johnston's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
David Mathew Johnston wrote 267 Medicare Part D claims in 2024
In 2024, David Johnston wrote 267 Medicare Part D claims for 202 patients. 93% of them were for generic drugs. CMS names the drug for 175 of them, across 7 drugs with 11 or more claims each, at $1,826 in total drug cost.
David Johnston's Part D claims by kind of drug, 2024
- Generic248 claims93%
- Brand-name19 claims7%
David Johnston'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 David Johnston's Part D claims, 2024
- Antibiotics54%143 of 267 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
How David Mathew Johnston takes part in Medicare
David Johnston accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
David Mathew Johnston is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for David Mathew Johnston's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about David Mathew Johnston
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is David Mathew Johnston's NPI number?
David Mathew Johnston's NPI number is 1417116401. It was assigned on June 4, 2008, and it is active in the NPI Registry.
What does David Mathew Johnston specialize in?
David Mathew Johnston is a physician assistant in Schenectady, New York. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does David Mathew Johnston practice?
David Johnston practices at 445 Balltown Rd, Schenectady, NY 12304. David Johnston's primary practice is Wellnow Urgent Care in Schenectady, New York. Dmand AI also links David Johnston to 1 medical group.
What is David Mathew Johnston's office phone number?
The practice phone on file for David Johnston is (716) 699-9032.
Which hospitals is David Mathew Johnston affiliated with?
David Johnston is affiliated with St. Peter's Hospital.
What medical group is David Mathew Johnston part of?
David Johnston is linked to WellNow Urgent Care. Dmand AI links David Johnston to 1 more medical group.
Does David Mathew Johnston accept Medicare?
Yes. CMS data shows David Johnston billed Medicare for 241 services in 2024, and David Johnston accepts Medicare assignment.
How many Medicare patients does David Mathew Johnston see?
CMS counts 132 Medicare patients who saw David Johnston in 2024, with an average age of 72.
Is David Mathew Johnston board certified?
Yes. David Johnston is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What services does David Mathew Johnston bill to Medicare?
In 2024, David Johnston's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and lab and pathology test (87804).
What drugs does David Mathew Johnston prescribe most?
In 2024 Medicare Part D data, David Johnston's most prescribed drugs by claims were Cephalexin, Prednisone and Doxycycline Hyclate.
How long has David Mathew Johnston been practicing?
David Johnston graduated from medical school in 2008, 18 years ago.
Selling to physician assistant practices?
See physician assistants in New York 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