1. Home
  2. Directory
  3. Maryland
  4. Bethesda
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ZACHARIAH HAMIDI MD
NPI 1225623929
Internal Medicine - Hematology & Oncology in Bethesda, MD

Active since March 04, 2021PECOS Enrolled
4494 PALMER RD N, BETHESDA, MD 20814(301) 295-4000 Get Directions Write a Review

NPPES record last updated: July 23, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 23, 2026, Aug 16, 2023, Dec 17, 2022 and 1 more (4 updates tracked since 2021).

About Zachariah Hamidi Md NPPES

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

ZACHARIAH HAMIDI MD (NPI 1225623929) is an individual hematology & oncology provider in Bethesda, Maryland, licensed in Virginia (0101277220) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1225623929
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameZACHARIAH HAMIDICredential: MD
Location Address4494 PALMER RD NBethesda, MD 20814
Mailing Address4494 Palmer Rd NBethesda, MD 20814 · (301) 295-4000
Phone(301) 295-4000
Sole ProprietorYes
Enumeration DateMarch 4, 2021
Last NPPES UpdateJuly 23, 20264 updates tracked since enumeration
NPPES CertifiedJuly 23, 2026
✔ NPI 1225623929 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in VA · 0101277220
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedGeneral PracticeTaxonomy 208D00000X · License 0101277220 (VA)
4494 PALMER RD N, Bethesda, MD 20814
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Zachariah Hamidi Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20814 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

LYNN ANNE NASH PHD, RN, PHCNS-BC
Registered Nurse (Community Health)
4494 PALMER RD N
BETHESDA, MD 20814
Montgomery County (301) 295-4512
JENNIFER MARIE SABINO M.D.
Surgery (Plastic and Reconstructive Surgery)
4494 PALMER RD N
BETHESDA, MD 20814
Montgomery County (301) 295-4000
JANINE FARAJ MD
General Practice
4494 PALMER RD N
BETHESDA, MD 20814
Montgomery County (480) 452-2460
DR. TORI SMITH MD
General Practice
4494 PALMER RD N
BETHESDA, MD 20814
Montgomery County (301) 295-4000
JENNY HELD MD
Surgery (Surgical Oncology)
4494 PALMER RD N
BETHESDA, MD 20814
Montgomery County (215) 208-2828
DR. SHAWN JAMISON MILLER M.D.
Internal Medicine (Allergy & Immunology)
4494 PALMER RD N
BETHESDA, MD 20814
Montgomery County (301) 295-9046
DR. RYAN KELLY MACVICAR MD
Military Health Care Provider
4494 PALMER RD N, BLDG 19
BETHESDA, MD 20814
Montgomery County (301) 295-1795
GENESIS JAMES
Military Health Care Provider
4494 PALMER RD N
APO, AA 20814
Montgomery County (301) 295-4000

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 Zachariah Hamidi's NPI number?

The NPI number for Zachariah Hamidi is 1225623929. It was assigned to this individual provider in the NPPES registry on March 4, 2021.

Where is Zachariah Hamidi located?

Zachariah Hamidi practices at 4494 Palmer Rd N, Bethesda, MD 20814. The listed phone number is (301) 295-4000.

What is Zachariah Hamidi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Zachariah Hamidi enrolled in Medicare?

Yes. Zachariah Hamidi is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Zachariah Hamidi was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 days 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.