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

Dr. John T Bakos, M.D., PHD

Internal Medicine Physician in Roseville, CA · enumerated 2006.

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

National Provider Identifier

1013949304

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Registry record

Entity type Individual (Type 1)

Name Dr. John T Bakos

Credential M.D., PHD

Sex Male

Practice address Roseville, CA, 95661

Phone (916) 347-7001

Fax (916) 304-1633

Enumeration date Jul 7, 2006

Last updated in NPPES Aug 21, 2014

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A67792 (CA) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A67792 (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
0005230257	Other	CA	AETNA PIN
00A677920	Other	CA	BLUE SHIELD
9331367	Other	CA	CIGNA
1447658	Other	CA	UNITED HEALTHCARE
00A6779200	Medicaid	CA	-
110208821	Other	CA	RAILROAD MEDICARE

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

How do I verify John Bakos's NPI record?

Cross-check NPI 1013949304 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1013949304 active?

Yes, as of the latest NPPES snapshot, NPI 1013949304 is active (record last updated 2014-08-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-21.