NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeffrey Caplan, MD

Psychiatry Physician in Larkspur, CA · enumerated 2006.

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

National Provider Identifier

1629182969

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Jeffrey Caplan
Credential MD
Sex Male
Practice address 900 Larkspur Landing Cir Ste 160, Larkspur, CA, 94939
Fax (707) 253-0457
Enumeration date Aug 17, 2006
Last updated in NPPES Dec 5, 2022

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 9874 (NV) Secondary
2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License G88706 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

Where does Jeffrey Caplan practice?
The practice location on file with NPPES is in Larkspur, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jeffrey Caplan?
The National Provider Identifier (NPI) for Jeffrey Caplan is 1629182969, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-05.