Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Charles Dennis Barton Jr., M.D.

Psychiatry Physician in Fremont, CA · enumerated 2005 · practices at Sutter Bay Medical Foundation.

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

National Provider Identifier

1881688505

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Registry record

Entity type Individual (Type 1)

Name Dr. Charles Dennis Barton Jr.

Credential M.D.

Sex Male

Practice address 39650 Liberty St, Suite 310, Fremont, CA, 94538

Phone (510) 498-2890

Enumeration date Sep 8, 2005

Last updated in NPPES Dec 17, 2021

Taxonomy & licenses

2084F0202X Forensic Psychiatry Physician Allopathic & Osteopathic Physicians · License D41236 (MD) Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 078926 (GA) Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License C53918 (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.

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Frequently asked questions

Is NPI 1881688505 active?

Yes, as of the latest NPPES snapshot, NPI 1881688505 is active (record last updated 2021-12-17).

How do I verify Charles Barton's NPI record?

Cross-check NPI 1881688505 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 2021-12-17.