Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Hearst Welborn Jr., M.D.

Q: What is the NPI number for John Welborn?

The National Provider Identifier (NPI) for John Welborn is 1235179144, a Type 1 (individual) record in the CMS NPPES registry.

Orthopaedic Surgery Physician in Pinole, CA · enumerated 2006.

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

National Provider Identifier

1235179144

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Registry record

Entity type Individual (Type 1)

Name Dr. John Hearst Welborn Jr.

Credential M.D.

Sex Male

Practice address 1700 San Pablo Ave, Suite A, Pinole, CA, 94564

Phone (510) 724-4600

Fax (510) 964-0607

Enumeration date Jun 8, 2006

Last updated in NPPES Aug 29, 2012

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License A61831 (CA) Primary

207XS0106X Orthopaedic Hand Surgery Physician Allopathic & Osteopathic Physicians · License A61831 (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
00A618310	Medicaid	CA	-

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

What is the NPI number for John Welborn?

The National Provider Identifier (NPI) for John Welborn is 1235179144, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Welborn practice?

The practice location on file with NPPES is in Pinole, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Canyon Pinole Surgery Center, Lp Ambulatory Surgical Clinic/Center · Pinole, CA NPI 1497791040 George Lee Anesthesiology Physician · Pinole, CA NPI 1700950938 Roger Proctor Anesthesiology Physician · Pinole, CA NPI 1184761090 William C Lyon MD, A Professional Corporation Orthopaedic Surgery Physician · Pinole, CA NPI 1437359486 Steven Daniels Certified Registered Nurse Anesthetist · Pinole, CA NPI 1750566261 Joseph Anthony Matan M.D. A Professional Corporation. Orthopaedic Surgery Physician · Pinole, CA NPI 1740429216 A Center for Hearing Health Hearing Aid Equipment · Pinole, CA NPI 1093033292 Cindy Ross Audiologist · Pinole, CA NPI 1255674859

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-29.