Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Hassan R. Tahhan, MD

Clinical Pathology/Laboratory Medicine Physician in Norfolk, VA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1770541229

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Registry record

Entity type Individual (Type 1)

Name Hassan R. Tahhan

Credential MD

Sex Male

Practice address 600 Gresham Dr, Sentara Norfolk General Hospital Path Dept, Norfolk, VA, 23507

Phone (757) 388-3221

Fax (757) 388-3799

Enumeration date May 3, 2006

Last updated in NPPES Sep 25, 2014

Taxonomy & licenses

207ZB0001X Blood Banking & Transfusion Medicine Physician Allopathic & Osteopathic Physicians · License 0101049654 (VA) Secondary

207ZP0105X Clinical Pathology/Laboratory Medicine Physician Allopathic & Osteopathic Physicians · License 0101049654 (VA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1770541229	Medicaid	VA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1770541229 active?

Yes, as of the latest NPPES snapshot, NPI 1770541229 is active (record last updated 2014-09-25).

How do I verify Hassan Tahhan's NPI record?

Cross-check NPI 1770541229 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-25.