John Michael Clark, D.O.
Advanced Heart Failure and Transplant Cardiology Physician · Wynnewood, PA
John Michael Clark, D.O. is an advanced heart failure and transplant cardiology physician with a practice address in Wynnewood, Pennsylvania, and NPI 1831484138, issued on Jun 14, 2011. Check the license (Pennsylvania OS019297, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- John Michael Clark
- Credential
- D.O.
- Primary taxonomy
- Advanced Heart Failure and Transplant Cardiology Physician 207RA0001X
- License number
- OS019297 PA
Self-reported in NPPES; status is on the state search - Practice location
- 100 E Lancaster Ave, Wynnewood, PA 19096
- Phone
- (484) 476-1000
- Enumerated
- Jun 14, 2011
- Record last updated
- Oct 17, 2024
- Medicare enrollment
- Enrolled (PECOS I20180709002034); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest advanced heart failure and transplant cardiology physician records → All 98 in Pennsylvania → Look up another NPI →
Also registered at 100 E Lancaster Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicholas Abate, DOStudent in an Organized Health Care Education/Training Program1508568676
- John Abramson, M.D.Gastroenterology Physician1710953633
- Sandra Abramson, MDCardiovascular Disease Physician1275538282
- Olivia Ackley, MDInternal Medicine Physician1174453930
- Ashley Adams, CRNPWomen's Health Nurse Practitioner1497225635
- Bonnie Adelman, M.S.P.A.Audiologist1568718088
Verify John Michael Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS019297Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% more Medicare Part D claims than the average advanced heart failure and transplant cardiology physician in 2024
3,670 Medicare Part D claims for 385 beneficiaries, against an average of 1,965 among the 1,124 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Metoprolol Succinate309 claims
- Atorvastatin Calcium275 claims
- Entresto257 claims
- Jardiance246 claims
- Spironolactone231 claims
- Torsemide212 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: $124.48
1 payment: food and beverage; the largest payer was Abiomed. The 1,027 providers of this specialty with any payment received $10,265.85 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
- Main Line HealthcareWynewood, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Michael Clark among 98 advanced heart failure and transplant cardiology physician records in Pennsylvania
John Michael Clark, D.O. is one of 98 advanced heart failure and transplant cardiology physician records with a practice address in Pennsylvania. 96% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 58% of them.
- NPI issued2011 · 58% of these records are older, 30% newer
- In a Medicare fileYes · 96% of these records are
- In the CMS Doctors and Clinicians fileYes · 93% of these records are
- Graduated2011 · median 2008 among the 91 with a school on file
- Record last updated2024 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0001X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Advanced Heart Failure and Transplant Cardiology Physician providers in Pennsylvania
There are 98 advanced heart failure and transplant cardiology physician records in Pennsylvania.
All 98 in Pennsylvania → Every provider in Wynnewood → Advanced Heart Failure and Transplant Cardiology Physician nationwide →
The 8 advanced heart failure and transplant cardiology physician records with the nearest ZIP codes
- Steven Domsky, MDWynnewood, PA 190961922200922
- Christopher Droogan, DOWynnewood, PA 190961174528129
- Madison RosenWynnewood, PA 190961265993380
- Lauren Sinnenberg, MDWynnewood, PA 190961598296295
- Thomas Cappola, MDPhiladelphia, PA 191041437185584
- Lee Goldberg, MDPhiladelphia, PA 191041144250259
- Kenneth Margulies, MDPhiladelphia, PA 191041720015647
- Hansie Mathelier, MDPhiladelphia, PA 191041770637357
Common questions
What is John Michael Clark, D.O.'s NPI number?
John Michael Clark, D.O.'s National Provider Identifier (NPI) is 1831484138, issued on Jun 14, 2011. An NPI identifies a provider in billing; it is not a license.
Where is John Michael Clark, D.O. located?
The NPPES record lists a practice address at 100 E Lancaster Ave, Wynnewood, PA, 19096. Phone: (484) 476-1000. Providers update this record themselves, so call before visiting.
How can I verify John Michael Clark, D.O.'s license?
NPPES lists Pennsylvania license number OS019297, 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 John Michael Clark, D.O. prescribe under Medicare Part D?
In 2024, John Michael Clark, D.O. had 3,670 Medicare Part D claims for 385 beneficiaries; the average among advanced heart failure and transplant cardiology physician prescribers was 1,965. 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.