Marvin J. Asnis, DO
General Practice Physician · Merion, PA
Marvin J. Asnis, DO is a general practice physician with a practice address in Merion, Pennsylvania, and NPI 1184679839, issued on May 23, 2006. Check the license (Pennsylvania OS001340L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Marvin J. Asnis
- Credential
- DO
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- OS001340L PA
Self-reported in NPPES; status is on the state search - Practice location
- 508 Winding Way, Merion, PA 19066
- Phone
- (610) 667-0341
- Enumerated
- May 23, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (610) 667-0139
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 345 in Pennsylvania → Look up another NPI →
Verify Marvin J. Asnis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS001340LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average general practice physician in 2024
24 Medicare Part D claims, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D.
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.
Marvin J. Asnis among 345 general practice physician records in Pennsylvania
Marvin J. Asnis, DO is one of 345 general practice physician records with a practice address in Pennsylvania. 45% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 45% of these records are
- In the CMS Doctors and Clinicians fileNo · 20% of these records are
- Record last updated2026 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in Pennsylvania
There are 345 general practice physician records in Pennsylvania.
All 345 in Pennsylvania → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Emmanuel Smith, M.D.Merion Station, PA 190661487688834
- Michael Zasloff, M.D.Merion Station, PA 190661639406499
- In-Soon Kim, MDMorrisville, PA 190671366514275
- Jason Sing, DOYardley, PA 190671962031559
- Andreas Bollmann, MDMedia, PA 190631407856347
- Richard Dimonte, D.O.Media, PA 190631497863518
- Kanta Diwan, MDMedia, PA 190631689665051
- Mansoor Choudhry, DOPenn Valley, PA 190721649809641
Common questions
What is Marvin J. Asnis, DO's NPI number?
Marvin J. Asnis, DO's National Provider Identifier (NPI) is 1184679839, issued on May 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marvin J. Asnis, DO located?
The NPPES record lists a practice address at 508 Winding Way, Merion, PA, 19066. Phone: (610) 667-0341. Providers update this record themselves, so call before visiting.
How can I verify Marvin J. Asnis, DO's license?
NPPES lists Pennsylvania license number OS001340L, 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 Marvin J. Asnis, DO prescribe under Medicare Part D?
In 2024, Marvin J. Asnis, DO had 24 Medicare Part D claims; the average among general practice physician prescribers was 3,030. 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.