John Neil Margolis, MD
Internal Medicine Physician · Laurel, MD
John Neil Margolis, MD is an internal medicine physician with a practice address in Laurel, Maryland, and NPI 1346231669, issued on Nov 4, 2005. Check the license (Maryland D25430, as entered in NPPES) on the Maryland Board of Physicians; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Neil Margolis
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D25430 MD
Self-reported in NPPES; status is on the state search - Practice location
- 13952 Baltimore Avenue, Laurel, MD 20707
- Phone
- (301) 490-1990
- Enumerated
- Nov 4, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (301) 490-8750
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Verify John Neil Margolis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D25430Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Neil Margolis among 3,904 internal medicine physician records in Maryland
John Neil Margolis, MD is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileNo · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 internal medicine physician records list a practice address in Laurel
They are 38 of the 2,372 NPPES records with a practice address in Laurel, and 3,904 internal medicine physician records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,904 in Maryland → Every provider in Laurel → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Shahab Bavani, M.D.Laurel, MD 207071326061672
- Luis Casas, M.D.Laurel, MD 207071588642326
- Mahmoud Doski, M.D.Laurel, MD 207071710925748
- Darryl Hill, MDLaurel, MD 207071013978790
- Robert Maggin, MDLaurel, MD 207071255322574
- Ikechukwu Mbonu, MDLaurel, MD 207071841291788
- Soma Mitra, M.D.Laurel, MD 207071386679603
- Jenny Moy, MDLaurel, MD 207071093706301
Common questions
What is John Neil Margolis, MD's NPI number?
John Neil Margolis, MD's National Provider Identifier (NPI) is 1346231669, issued on Nov 4, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Neil Margolis, MD located?
The NPPES record lists a practice address at 13952 Baltimore Avenue, Laurel, MD, 20707. Phone: (301) 490-1990. Providers update this record themselves, so call before visiting.
How can I verify John Neil Margolis, MD's license?
NPPES lists Maryland license number D25430, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.