John Merson, MD
NPI 1447363668 · Orthopaedic Surgery Physician · Concord, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Merson, MD is a Orthopaedic Surgery Physician provider in Concord, CA (NPI 1447363668).
Provider details
- NPI number
- 1447363668
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G56162 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-15
- Last updated
- 2020-09-17
- Certified
- 2020-09-17
Frequently asked questions
- What is John Merson's NPI number?
- John Merson's National Provider Identifier (NPI) is 1447363668, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Merson's specialty?
- John Merson is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Merson located?
- John Merson's practice location on file with NPPES is 1800 Sutter St, Concord, CA 94520.
- What is John Merson's phone number?
- The practice phone number listed in the NPPES registry for John Merson is (925) 691-0500.
- Does John Merson accept Medicare?
- John Merson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Merson's NPI active?
- Yes — John Merson's NPI (1447363668) is active in the NPPES registry as of the last update on 2020-09-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.