JOHN KENNETH MERSON MD
NPI 1447363668
Orthopaedic Surgery in Concord, CA
About John Kenneth Merson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN KENNETH MERSON MD (NPI 1447363668) is an individual orthopaedic surgery provider in Concord, California, licensed in California (G56162) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John Kenneth Merson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Merson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Concord, CA 94520
- Reassigned Medicare billing, California enrollment
- 211 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94520 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CONCORD, CA 94520
CONCORD, CA 94520
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Merson's NPI number?
The NPI number for John Merson is 1447363668. It was assigned to this individual provider in the NPPES registry on August 15, 2006.
Where is John Merson located?
John Merson practices at 1800 Sutter St 100, Concord, CA 94520. The listed phone number is (925) 691-0500.
What is John Merson's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is John Merson enrolled in Medicare?
Yes. John Merson is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Merson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Merson reassigns Medicare benefits to Golden State Orthopedics & Spine (Concord, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Merson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Merson was last updated on September 17, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John Kenneth Merson, MD · NPI 1447363668
Orthopaedic Surgery physician in Concord, California. Individual provider, active in the CMS NPPES registry since August 15, 2006.
## Identity
- **NPI:** 1447363668 (Entity type: Individual)
- **Enumerated:** August 15, 2006
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** G56162 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1800 SUTTER ST, 100, Concord, CA 94520
- **Phone:** (925) 691-0500 · **Fax:** (925) 688-0204
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Golden State Orthopedics & Spine (NPI 1427402783, Concord, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 17, 2020
- **Other identifiers:** Other 200037192
---
Source: [NPI Profile](https://npiprofile.com/npi/1447363668) · Data from the CMS NPPES public registry.