NPPES file of Aug 9, 2026

James S. Grissom, M.D.

Internal Medicine Physician · Frederick, MD

James S. Grissom, M.D. is an internal medicine physician with a practice address in Frederick, Maryland, and NPI 1881695898, issued on Aug 2, 2005. Check the license (Maryland D0021944, as entered in NPPES) on the Maryland Board of Physicians; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1881695898
Name
James S. Grissom
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
D0021944 MD
Self-reported in NPPES; status is on the state search
Practice location
400 W 7TH St, Frederick, MD 21701
Phone
(240) 566-3840
Enumerated
Aug 2, 2005
Record last updated
Aug 30, 2011 (not updated in 15 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →

Also registered at 400 W 7TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jan Abramczuk, MDAnatomic Pathology & Clinical Pathology Physician1750301719
  2. Esther AdejumoPhysician Assistant1194533109
  3. Charleen Anani, PHARMDPharmacist1619842580
  4. James Ansell, MDEmergency Medicine Physician1982354320
  5. Mustafa AzimiAcute Care Nurse Practitioner1568064046
  6. Justin BarnettEmergency Medicine Physician1447741863

Verify James S. Grissom in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of Physicians
    Search for license D0021944    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Maryland license search

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James S. Grissom among 3,904 internal medicine physician records in Maryland

James S. Grissom, M.D. 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 updated2011 · 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).

59 internal medicine physician records list a practice address in Frederick

They are 59 of the 3,981 NPPES records with a practice address in Frederick, 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 Frederick → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Sajjad Aziz, MDFrederick, MD 217011457336554
  2. Michael Flessner, MDFrederick, MD 217011669401857
  3. Syed Haque, M.D.Frederick, MD 217011952390205
  4. Safrina Hasan, DOFrederick, MD 217011679524540
  5. Sibte Kazmi, MDFrederick, MD 217011861451361
  6. Jack Lu, M.D.Frederick, MD 217011982717765
  7. Yassin Mohamed, M.D.Frederick, MD 217011386752806
  8. John Piacentino, MDFrederick, MD 217011114936895

Common questions

What is James S. Grissom, M.D.'s NPI number?

James S. Grissom, M.D.'s National Provider Identifier (NPI) is 1881695898, issued on Aug 2, 2005. An NPI identifies a provider in billing; it is not a license.

Where is James S. Grissom, M.D. located?

The NPPES record lists a practice address at 400 W 7TH St, Frederick, MD, 21701. Phone: (240) 566-3840. Providers update this record themselves, so call before visiting.

How can I verify James S. Grissom, M.D.'s license?

NPPES lists Maryland license number D0021944, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.