NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Carl Jeffrey Carlson, M.D.

Cardiovascular Disease Physician in Fremont, CA · enumerated 2006.

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

National Provider Identifier

1386669489

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Registry record

Entity type Individual (Type 1)
Name Carl Jeffrey Carlson
Credential M.D.
Sex Male
Practice address Fremont, CA, 94538
Phone (510) 792-2012
Fax (510) 792-7986
Enumeration date Jul 12, 2006
Last updated in NPPES Mar 18, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License G29295 (CA) Primary
207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License G29295 (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
060006330 Other CA RAILROAD MEDICARE
A44008 Other CA COMMERCIAL
00G292950 Medicaid CA -
00G292950 Other CA BLUECROSS AND BLUESHIELD

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

Where does Carl Carlson practice?
The practice location on file with NPPES is in Fremont, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Carl Carlson?
The National Provider Identifier (NPI) for Carl Carlson is 1386669489, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-18.