Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marylynn B. Barkley, MD

Personal Emergency Response Attendant in Stockton, CA · enumerated 2006.

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

National Provider Identifier

1831108950

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Registry record

Entity type Individual (Type 1)

Name Marylynn B. Barkley

Credential MD

Sex Female

Practice address 525 W Acacia St, Stockton, CA, 95203

Phone (209) 944-5550

Enumeration date Aug 7, 2006

Last updated in NPPES Apr 30, 2008

Taxonomy & licenses

146D00000X Personal Emergency Response Attendant Emergency Medical Service Providers · License G81763 (CA) Primary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License G81763 (CA) Secondary

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
00G817630	Medicaid	CA	-

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 specialty is Marylynn Barkley?

Marylynn Barkley is registered in NPPES with the primary taxonomy of Personal Emergency Response Attendant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-30.