DR. JOHN CARTER BARKER M.D.
NPI 1487794020
Psychiatry & Neurology - Psychiatry in San Francisco, CA
About Dr. John Carter Barker M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN CARTER BARKER M.D. (NPI 1487794020) is an individual psychiatry provider in San Francisco, California, licensed in California (G84024) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and is a graduate of University Of Maryland School Of Medicine (1987).
NPPES Registry Identity
Specialties & Licenses
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 and accepts Medicare assignment
Dr. John Carter Barker M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show John Barker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Francisco, CA 94116
- Reassigned Medicare billing, California enrollment
- 1,573 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 94116 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Barker's NPI number?
The NPI number for John Barker is 1487794020. It was assigned to this individual provider in the NPPES registry on February 6, 2007.
Where is John Barker located?
John Barker practices at 1990 41st Ave, San Francisco, CA 94116. The listed phone number is (415) 753-7255.
What is John Barker's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is John Barker enrolled in Medicare?
Yes. John Barker is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for John Barker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Barker reassigns Medicare benefits to City & County Of San Francisco (San Francisco, 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 Barker'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 Barker was last updated on August 30, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Dr. John Carter Barker, M.D. · NPI 1487794020
Psychiatry physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since February 6, 2007.
## Identity
- **NPI:** 1487794020 (Entity type: Individual)
- **Enumerated:** February 6, 2007
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** G84024 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1990 41ST AVE, San Francisco, CA 94116-1101
- **Phone:** (415) 753-7255 · **Fax:** (415) 753-0164
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** City & County Of San Francisco (NPI 1144330309, San Francisco, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Maryland School Of Medicine, class of 1987
## Record status
- **NPPES last updated:** August 30, 2012
- **Other identifiers:** Medicare UPIN G95914 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1487794020) · Data from the CMS NPPES public registry.