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Greenfield Associates, M.D., P.A.

Internal Medicine Physician in Annapolis, MD · enumerated 2006 · authorized official Katrina Williams, Office Manager.

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

National Provider Identifier

1396770996

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Registry record

Entity type Organization (Type 2)
Legal business name Greenfield Associates, M.D., P.A.
Other name <Unavail>
Practice address 139 Old Solomons Island Rd, Annapolis, MD, 21401
Phone (410) 224-2222
Fax (410) 224-4926
Enumeration date Jul 11, 2006
Last updated in NPPES Aug 21, 2024

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Katrina Williams
Title Office Manager
Phone (410) 224-4926

Other identifiers

Identifier Type State Issuer
081681700 Medicaid MD -
272251800 Medicaid MD -
690102600 Medicaid MD -
772051300 Medicaid MD -
151451200 Medicaid MD -

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.

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Frequently asked questions

What is the NPI number for Greenfield Associates, M.D., P.A.?
The NPI for Greenfield Associates, M.D., P.A. is 1396770996, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Greenfield Associates, M.D., P.A.?
NPPES lists Katrina Williams (Office Manager) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-21.