Mark Thomas Watkins, DO
Adult Medicine Physician · Philadelphia, PA
Mark Thomas Watkins, DO is an adult medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1336226166, issued on Nov 1, 2006. Check the license (Pennsylvania OS006195L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Mark Thomas Watkins
- Credential
- DO
- Primary taxonomy
- Adult Medicine Physician 207QA0505X
- License number
- OS006195L PA
Self-reported in NPPES; status is on the state search - Practice location
- 253 SO 10TH Street, Philadelphia, PA 19107
- Phone
- (215) 829-0170
- Enumerated
- Nov 1, 2006
- Record last updated
- May 26, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (215) 829-0173
- Medicare enrollment
- Enrolled (PECOS I20110518000079); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1986
- Entity
- Type 1 · individual
8 nearest adult medicine physician records → All 77 in Pennsylvania → Look up another NPI →
Verify Mark Thomas Watkins in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS006195LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% more Medicare Part D claims than the average adult medicine physician in 2024
4,879 Medicare Part D claims for 190 beneficiaries, against an average of 3,002 among the 1,307 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims. 55 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium215 claims
- Biktarvy175 claims
- Amlodipine Besylate154 claims
- Atorvastatin Calcium128 claims
- Lisinopril128 claims
- Gabapentin118 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,814.63
67 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 664 providers of this specialty with any payment received $1,405.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mazzoni CenterPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Thomas Watkins among 77 adult medicine physician records in Pennsylvania
Mark Thomas Watkins, DO is one of 77 adult medicine physician records with a practice address in Pennsylvania. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 44% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileYes · 39% of these records are
- Graduated1986 · median 1994 among the 30 with a school on file
- Record last updated2009 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0505X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Medicine Physician providers in Pennsylvania
There are 77 adult medicine physician records in Pennsylvania.
All 77 in Pennsylvania → Every provider in Philadelphia → Adult Medicine Physician nationwide →
The 8 adult medicine physician records with the nearest ZIP codes
- Jawad Ahsan, DOPhiladelphia, PA 191071043707839
- Amy Orloff-Fine, DOPhiladelphia, PA 191071447229182
- Nikki Lang, M.D,Philadelphia, PA 191061588633804
- Arthur Smith, MDPhiladelphia, PA 191061841359148
- Molly Kastner, MDPhiladelphia, PA 191041235768300
- Paul LePhiladelphia, PA 191041063804193
- Amanda Mohabir, M.D.Philadelphia, PA 191041326147356
- Edward Strauss, D.O.Philadelphia, PA 191111881736403
Common questions
What is Mark Thomas Watkins, DO's NPI number?
Mark Thomas Watkins, DO's National Provider Identifier (NPI) is 1336226166, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Thomas Watkins, DO located?
The NPPES record lists a practice address at 253 SO 10TH Street, Philadelphia, PA, 19107. Phone: (215) 829-0170. Providers update this record themselves, so call before visiting.
How can I verify Mark Thomas Watkins, DO's license?
NPPES lists Pennsylvania license number OS006195L, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Thomas Watkins, DO prescribe under Medicare Part D?
In 2024, Mark Thomas Watkins, DO had 4,879 Medicare Part D claims for 190 beneficiaries; the average among adult medicine physician prescribers was 3,002. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.