NPPES file of Aug 9, 2026

Mark Allan Walker, M.D.

Endocrinology, Diabetes & Metabolism Physician · Halethorpe, MD

Mark Allan Walker, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Halethorpe, Maryland, and NPI 1083716823, issued on Sep 2, 2006. Check the license (Maryland D0037239, 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
1083716823
Name
Mark Allan Walker
Credential
M.D.
Primary taxonomy
Endocrinology, Diabetes & Metabolism Physician 207RE0101X
License numbers
D0037239 MD
MD039279 DC
0101250822 VA
Self-reported in NPPES; status is on the state search
Practice location
1701 Twin Springs RD, Halethorpe, MD 21227
Phone
(410) 737-5540
Enumerated
Sep 2, 2006
Record last updated
Oct 29, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(410) 737-5531
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 endocrinology, diabetes & metabolism physician records → All 314 in Maryland → Look up another NPI →

Also registered at 1701 Twin Springs RD

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

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  2. Martina Angelini Schwartz, MDPediatrics Physician1689734352
  3. Rezene Asghodom, RPH, MSCPharmacist1093242141
  4. Tisha Barnett, M.D.Internal Medicine Physician1457643587
  5. Anna Braun, MPAS, PA-CPhysician Assistant1679631576
  6. Catherine Campbell, M.D.Cardiovascular Disease Physician1639212475

Verify Mark Allan Walker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of Physicians
    Search for license D0037239    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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Mark Allan Walker among 314 endocrinology, diabetes & metabolism physician records in Maryland

Mark Allan Walker, M.D. is one of 314 endocrinology, diabetes & metabolism physician records with a practice address in Maryland. 75% 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 2006, is newer than 11% of them.

  • NPI issued2006 · 11% of these records are older, 55% newer
  • In a Medicare fileNo · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 61% of these records are
  • Record last updated2013 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Endocrinology, Diabetes & Metabolism Physician providers in Maryland

There are 314 endocrinology, diabetes & metabolism physician records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 314 in Maryland → Every provider in Halethorpe → Endocrinology, Diabetes & Metabolism Physician nationwide →

The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes

  1. Asif Mohamed, MDBaltimore, MD 212271962484261
  2. Saba Ahmed, MDBaltimore, MD 212251548765506
  3. Shadi Barakat, MDBaltimore, MD 212291629250154
  4. Josephine Egan, M.D.Baltimore, MD 212251790840007
  5. Maria Kravchenko, M.D.Baltimore, MD 212291336415074
  6. George Lawrence, MDBaltimore, MD 212291942262043
  7. Duangmarl Malayaman, MDBaltimore, MD 212291588744171
  8. Luis Rivera-RamirezBaltimore, MD 212251912969312

Common questions

What is Mark Allan Walker, M.D.'s NPI number?

Mark Allan Walker, M.D.'s National Provider Identifier (NPI) is 1083716823, issued on Sep 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Allan Walker, M.D. located?

The NPPES record lists a practice address at 1701 Twin Springs RD, Halethorpe, MD, 21227. Phone: (410) 737-5540. Providers update this record themselves, so call before visiting.

How can I verify Mark Allan Walker, M.D.'s license?

NPPES lists Maryland license number D0037239, 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.