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DR. JONATHAN FISH M.D.
NPI 1033146758
Radiology - Diagnostic Radiology in Walnut Creek, CA

Active since June 27, 2006PECOS Enrolled
2125 OAK GROVE RD, SUITE 200, WALNUT CREEK, CA 94598(925) 296-7150(925) 296-7171 Get Directions Write a Review

NPPES record last updated: April 2, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Jonathan Fish M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JONATHAN FISH M.D. (NPI 1033146758) is an individual diagnostic radiology provider in Walnut Creek, California, licensed in California (G14910) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1033146758
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameDR. JONATHAN FISHCredential: M.D.
Location Address2125 OAK GROVE RD, SUITE 200Walnut Creek, CA 94598-2536
Mailing Address2125 Oak Grove Rd, Suite 200Walnut Creek, CA 94598-2536 · (925) 296-7150 · Fax (925) 296-7171
Phone(925) 296-7150
Fax(925) 296-7171
Sole ProprietorNo
Enumeration DateJune 27, 2006
Last NPPES UpdateApril 2, 2015
✔ NPI 1033146758 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License✔ Licensed in CA · G14910
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
2125 OAK GROVE RD, Walnut Creek, CA 94598
Open in Google Maps ↗

Other Identifiers 24

Medicare PIN30097022CA
Medicare PINAM421SCA
Medicare PINAM421XCA
Medicare PINAM421ICA
Medicare PINAM421MCA
Medicare PIN300096979CA
Medicare PIN300097062CA
Medicare PINAM421NCA
Medicare PINAM421OCA
Medicare PINAM421UCA
Medicare PINAM421JCA
Medicare PINAM421KCA
Medicare PIN300097065CA
Medicare PINAM421WCA
Medicare PINAM421YCA
Medicare UPINA39375CA
Medicare PIN00G149100CA
Medicare PINAM421QCA
Medicare PINAM421VCA
Medicare PINAM421ZCA
Medicare PINAM421LCA
Medicare PINAM421PCA
Medicare PINAM421RCA
Medicare PINAM421TCA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Jonathan Fish M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Jonathan Fish reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

John Muir Trauma Physicians Billing Service
1.7 mi
Trauma Surgery
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
  • Reassigned Medicare billing, California enrollment
  • 810 clinicians in this Medicare group
NPI 1962551861 (925) 947-5331

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 94598 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

DR. PHILIP J. RICH MD
Radiology (Diagnostic Radiology)
2125 OAK GROVE RD, #200
WALNUT CREEK, CA 94598
Contra Costa County (925) 296-7150
DR. JOSEPH CHAN M.D.
Radiology (Diagnostic Radiology)
2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598
Contra Costa County (925) 296-7150
DR. ASEEM OM RAWAL M.D.
Radiology (Diagnostic Radiology)
2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598
Contra Costa County (925) 296-7150
CHRISTOPHER C LEE MD
Radiology (Vascular & Interventional Radiology)
2125 OAK GROVE RD, #200
WALNUT CREEK, CA 94598
Contra Costa County (925) 296-7150
SUNIL GANDHI M.D.
Radiology (Diagnostic Radiology)
2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598
Contra Costa County (925) 296-7150
DR. RALPH WESLEY MUTCHLER M.D.
Radiology (Diagnostic Radiology)
2125 OAK GROVE RD, #200
WALNUT CREEK, CA 94598
Contra Costa County (925) 296-7150
DR. SANGEETA GAMBHIR M.D.
Radiology (Diagnostic Radiology)
2125 OAK GROVE RD, #200
WALNUT CREEK, CA 94598
Contra Costa County (925) 296-7150
MARK KUANG-MIAN TU M.D.
Radiology (Diagnostic Radiology)
2125 OAK GROVE RD, SUITE 200
WALNUT CREEK, CA 94598
Contra Costa County (925) 296-7150

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 Jonathan Fish's NPI number?

The NPI number for Jonathan Fish is 1033146758. It was assigned to this individual provider in the NPPES registry on June 27, 2006.

Where is Jonathan Fish located?

Jonathan Fish practices at 2125 Oak Grove Rd Suite 200, Walnut Creek, CA 94598. The listed phone number is (925) 296-7150.

What is Jonathan Fish's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Jonathan Fish enrolled in Medicare?

Yes. Jonathan Fish is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Jonathan Fish's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jonathan Fish reassigns Medicare benefits to John Muir Trauma Physicians Billing Service (Walnut Creek, 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 Jonathan Fish'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 Jonathan Fish was last updated on April 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.