Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Carolyn A. Hammett MD PC

Q: What type of organization is Carolyn A. Hammett MD PC?

Carolyn A. Hammett MD PC is registered in NPPES as a Family Medicine Physician (its primary provider taxonomy).

Family Medicine Physician in Hyattsville, MD · enumerated 2008 · authorized official Sue Davis, Billing Manager.

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

National Provider Identifier

1861678229

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Registry record

Entity type Organization (Type 2)

Legal business name Carolyn A. Hammett MD PC

Practice address 1835 University Blvd E, #226, Hyattsville, MD, 20783

Phone (410) 848-8202

Fax (410) 848-2644

Enumeration date Jan 16, 2008

Last updated in NPPES Apr 28, 2008

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D39966 (MD) Primary

Authorized official

Name Sue Davis

Title Billing Manager

Phone (410) 848-8202

Other identifiers

Identifier	Type	State	Issuer
264118	Other	MD	UNITED HEALTHCARE
019941900	Medicaid	MD	-
0H36CA52078700	Other	MD	BC MD
40090001	Other	DC	BC DC/METRO

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 type of organization is Carolyn A. Hammett MD PC?

Carolyn A. Hammett MD PC is registered in NPPES as a Family Medicine Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-28.