Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

David W Kossoff, M.D.

Specialist in Frederick, MD · enumerated 2006 · practices at David W. Kossoff, M.D., LLC.

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

National Provider Identifier

1629152582

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Registry record

Entity type Individual (Type 1)

Name David W Kossoff

Credential M.D.

Sex Male

Practice address Frederick, MD, 21702

Phone (301) 624-5566

Fax (301) 624-5542

Enumeration date Oct 25, 2006

Last updated in NPPES Sep 17, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

174400000X Specialist Other Service Providers · License D0054121 (MD) 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
P10152	Other	MD	INFORMED
376329	Other	MD	ALLIANCE MAMSI
P00206418	Other	MD	RAILROAD MEDICARE
494710	Other	MD	NCPPO
682BDA	Other	MD	CAREFIRST OF MARYLAND
K4040001	Other	DC	CAREFIRST OF NATIONAL CAP
133102701	Medicaid	MD	-
2027119	Other	MD	UNITED HEALTHCARE

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

What is the NPI number for David Kossoff?

The National Provider Identifier (NPI) for David Kossoff is 1629152582, a Type 1 (individual) record in the CMS NPPES registry.

Where does David Kossoff practice?

The practice location on file with NPPES is in Frederick, MD. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

David W. Kossoff, M.D., LLC Specialist · Frederick, MD NPI 1437206984 Lindsay Bitto Family Nurse Practitioner · Frederick, MD NPI 1972904845 Arash Zarrin Gastroenterology Physician · Frederick, MD NPI 1407351729 Pilin Francis Gastroenterology Physician · Frederick, MD NPI 1669967592

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-17.