Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Kenneth Merson, MD

Orthopaedic Surgery Physician in Concord, CA · enumerated 2006.

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

National Provider Identifier

1447363668

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name John Kenneth Merson

Credential MD

Sex Male

Practice address 1800 Sutter St, 100, Concord, CA, 94520

Phone (925) 691-0500

Fax (925) 688-0204

Enumeration date Aug 15, 2006

Last updated in NPPES Sep 17, 2020

Taxonomy & licenses

207XS0114X Adult Reconstructive Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License G56162 (CA) Secondary

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License G56162 (CA) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License G56162 (CA) Primary

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
200037192	Other	-	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is John Merson?

John Merson is registered in NPPES with the primary taxonomy of Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Addus Healthcare Home Health Agency · Concord, CA NPI 1003879552 Emily Crow Surgical Physician Assistant · Concord, CA NPI 1861455784 East Bay Sports Medicine and Orthopaedic Associates A Medical Corporat Sports Medicine (Orthopaedic Surgery) Physician · Concord, CA NPI 1447354725 Golden State Orthopedics & Spine Orthopaedic Surgery Physician · Concord, CA NPI 1427402783 Sahih Marriage and Family Therapy, A Professional Corporation Marriage & Family Therapist · Concord, CA NPI 1659227692

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-17.