Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Katherine Kretchman, PA-C

Physician Assistant in Oakland, MD · enumerated 2023.

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

National Provider Identifier

1164203006

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Registry record

Entity type Individual (Type 1)

Name Mary Katherine Kretchman

Credential PA-C

Sex Female

Practice address 311 N 4th St, Oakland, MD, 21550

Phone (301) 334-7855

Enumeration date Oct 6, 2023

Last updated in NPPES Oct 6, 2023

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License C0009118 (MD) Primary

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 Mary Kretchman?

The National Provider Identifier (NPI) for Mary Kretchman is 1164203006, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Kretchman practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-06.