Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Lauren Theresa Proctor, M.D.

Internal Medicine Physician in San Francisco, CA · enumerated 2005.

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

National Provider Identifier

1811997901

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Registry record

Entity type Individual (Type 1)

Name Dr. Lauren Theresa Proctor

Credential M.D.

Sex Female

Practice address 2410 California St, San Francisco, CA, 94115

Phone (888) 663-6331

Fax (415) 252-7176

Enumeration date Jul 29, 2005

Last updated in NPPES Mar 14, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 78214 (MA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G187560 (CA) 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
69431	Other	MA	HPHC
102727	Other	MA	CIGNA
1293433	Other	MA	FALLON
2345680	Other	MA	AETNA
000000008364	Other	MA	BMC
24209	Other	MA	HNE
920161 05	Other	MA	UNITED HEALTH CARE
J13319	Other	MA	BLUE CROSS & BLUE SHIELD
078214-7879	Other	MA	CONNECTICARE
6188044	Medicaid	MA	-

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

Is NPI 1811997901 active?

Yes, as of the latest NPPES snapshot, NPI 1811997901 is active (record last updated 2025-03-14).

How do I verify Lauren Proctor's NPI record?

Cross-check NPI 1811997901 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-14.