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DAVID ALLAN WILLIAMSON M.B., CH.B.
NPI 1215183512
Psychiatry & Neurology - Brain Injury Medicine in Bethesda, MD

Active since August 18, 2008PECOS Enrolled
WALTER REED NATIONAL MILITARY CTR, 8901 ROCKVILLE PIKE, BETHESDA, MD 20889(301) 295-1928(410) 571-0625 Get Directions Write a Review

NPPES record last updated: February 27, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 21, 2022, Mar 17, 2018, Jul 24, 2017 (3 updates tracked since 2017).

About David Allan Williamson M.b., Ch.b. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DAVID ALLAN WILLIAMSON M.B., CH.B. (NPI 1215183512) is an individual brain injury medicine provider in Bethesda, Maryland, licensed in Texas (R0977) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1215183512
Entity TypeIndividualMale
Primary Taxonomy2084P0301X
Provider Legal NameDAVID ALLAN WILLIAMSONCredential: M.B., CH.B.
Location AddressWALTER REED NATIONAL MILITARY CTR, 8901 ROCKVILLE PIKEBethesda, MD 20889-0001
Mailing Address8901 Rockville PikeBethesda, MD 20889-0001 · (410) 463-0560
Phone(301) 295-1928
Fax(410) 571-0625
Sole ProprietorNo
Enumeration DateAugust 18, 2008
Last NPPES UpdateFebruary 27, 20263 updates tracked since enumeration
NPPES CertifiedFebruary 27, 2026
✔ NPI 1215183512 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Brain Injury MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2084P0301X
Licenses✔ Licensed in TX · R0977✔ Licensed in TX · D43756
Definition
A Brain Injury Medicine physician specializes in disorders of brain function due to injury and disease. These disorders encompass a range of medical, physical, neurologic, cognitive, sensory, and behavioral disorders that result in psychosocial, educational, and vocational consequences.
Also ListedPsychiatry & Neurology · Behavioral Neurology & NeuropsychiatryTaxonomy 2084B0040X · License R0977 (TX), D43756 (MD)
WALTER REED NATIONAL MILITARY CTR, Bethesda, MD 20889
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

David Allan Williamson M.b., Ch.b. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

STEPHANIE AJUZIE M.D.
Student in an Organized Health Care Education/Training Program
WALTER REED NATIONAL MILITARY CTR, 4494 NORTH PALMER ROAD, BUILDING 10, 1ST FLOOR, ROOM 10
BETHESDA, MD 20889
Montgomery County (301) 295-9283
ANN NOTHWEHR
Dietitian, Registered
WALTER REED NATIONAL MILITARY CTR
BETHESDA, MD 20889
Montgomery County (301) 295-0697
MEMAR D. AYALEW PHARM.D.
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
WALTER REED NATIONAL MILITARY CTR
BETHESDA, MD 20889
Montgomery County (301) 400-1527
DR. TIMOTHY L LOZON D.D.S.
Dentist (General Practice)
WALTER REED NATIONAL MILITARY CTR, 8901 WISCONSIN AVENUE BLDG 2 ROOM 2661
BETHESDA, MD 20889
Montgomery County (301) 295-4059
ALEXANDER DEW D.O.
Internal Medicine (Hematology & Oncology)
WALTER REED NATIONAL MILITARY CTR
BETHESDA, MD 20889
Montgomery County (301) 319-8361
DR. LAURA TANCRETI MULREANY M.D.
Pediatrics (Pediatric Pulmonology)
WALTER REED NATIONAL MILITARY CTR, 8901 WISCONSIN AVE, DEPARTMENT OF PEDIATRICS
BETHESDA, MD 20889
Montgomery County (301) 295-4959
ANDREA CRUNKHORN PT
Physical Therapist
WALTER REED NATIONAL MILITARY CTR, 4494 NORTH PALMER ROAD
BETHESDA, MD 20889
Montgomery County (301) 295-2737
MS. LENORA CHRISTINE FREEMAN LICSW/LCSW-C
Social Worker (Clinical)
WALTER REED NATIONAL MILITARY CTR, 8901 WISCONSIN AVENUE
BETHESDA, MD 20889
Montgomery County (301) 295-7623

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is David Williamson's NPI number?

The NPI number for David Williamson is 1215183512. It was assigned to this individual provider in the NPPES registry on August 18, 2008.

Where is David Williamson located?

David Williamson practices at Walter Reed National Military Ctr 8901 Rockville Pike, Bethesda, MD 20889. The listed phone number is (301) 295-1928.

What is David Williamson's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Brain Injury Medicine, with taxonomy code 2084P0301X.

Is David Williamson enrolled in Medicare?

Yes. David Williamson is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for David Williamson was last updated on February 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.