MR. JAMES JOSEPH HERSHON MD
NPI 1508940305
Internal Medicine - Critical Care Medicine in San Francisco, CA
About Mr. James Joseph Hershon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. JAMES JOSEPH HERSHON MD (NPI 1508940305) is an individual critical care medicine provider in San Francisco, California, licensed in California (G34963) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2000).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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
Mr. James Joseph Hershon Md 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 Reassignments
3Medicare enrollment records show James Hershon reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94109
- Reassigned Medicare billing, California enrollment
- 96 clinicians in this Medicare group
San Francisco, CA 94109
- Reassigned Medicare billing, California enrollment
- 28 clinicians in this Medicare group
Orinda, CA 94563
- Reassigned Medicare billing, California enrollment
- 4,479 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94115 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.
Reported Quality Measures
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.
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
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 James Hershon's NPI number?
The NPI number for James Hershon is 1508940305. It was assigned to this individual provider in the NPPES registry on October 25, 2006.
Where is James Hershon located?
James Hershon practices at 2351 Clay St # 501, San Francisco, CA 94115. The listed phone number is (415) 923-3421.
What is James Hershon's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is James Hershon enrolled in Medicare?
Yes. James Hershon 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 organizations bill Medicare for James Hershon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Hershon reassigns Medicare benefits to 3 organizations: California Advanced Imaging Medical Associates Inc (San Francisco, CA), San Francisco Critical Care Med Group Inc (San Francisco, CA) and Sutter Bay Medical Foundation (Orinda, CA). Each 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 James Hershon'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 James Hershon was last updated on January 7, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Mr. James Joseph Hershon, MD · NPI 1508940305
Critical Care Medicine physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since October 25, 2006.
## Identity
- **NPI:** 1508940305 (Entity type: Individual)
- **Enumerated:** October 25, 2006
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** G34963 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2351 CLAY ST, # 501, San Francisco, CA 94115
- **Phone:** (415) 923-3421 · **Fax:** (415) 600-1414
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): California Advanced Imaging Medical Associates Inc (NPI 1881646909, San Francisco, CA); San Francisco Critical Care Med Group Inc (NPI 1215000211, San Francisco, CA); Sutter Bay Medical Foundation (NPI 1366898538, Orinda, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** January 7, 2013
- **Other identifiers:** Medicaid 00G349630 (CA); Medicare UPIN A46162; Medicare ID-Type Unspecified 00G349630 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1508940305) · Data from the CMS NPPES public registry.