JOHN MUIR TRAUMA PHYSICIANS BILLING SERVICE
NPI 1457400293
Neurological Surgery in Walnut Creek, CA

Active since January 10, 2007
1601 YGNACIO VALLEY RD, WALNUT CREEK, CA 94598(925) 947-5331(925) 941-2177 Get Directions Write a Review

NPPES record last updated: February 23, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About John Muir Trauma Physicians Billing Service NPPES

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

JOHN MUIR TRAUMA PHYSICIANS BILLING SERVICE (NPI 1457400293) is a healthcare organization registered as a neurological surgery in Walnut Creek, California and active in the NPI registry since January 2007. The organization lists Mike Thomas, Ceo, as its authorized official.

NPPES Registry Identity

NPI1457400293
Entity TypeOrganization
Primary Taxonomy207T00000X
Legal Business NameJOHN MUIR TRAUMA PHYSICIANS BILLING SERVICE
Location Address1601 YGNACIO VALLEY RDWalnut Creek, CA 94598-3122
Mailing AddressPo Box 9021Walnut Creek, CA 94598-0921 · (925) 947-5331 · Fax (925) 941-2177
Fax(925) 941-2177
Organization SubpartNo
Authorized OfficialMike ThomasCeo · (925) 941-2100
Enumeration DateJanuary 10, 2007
Last NPPES UpdateFebruary 23, 2023
NPPES CertifiedFebruary 23, 2023
✔ NPI 1457400293 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
Definition
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X
1601 YGNACIO VALLEY RD, Walnut Creek, CA 94598

Other Identifiers 1

MedicaidGR002814ACA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John Muir Trauma Physicians Billing Service is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

808

Medicare enrollment records show 808 clinicians reassign Medicare billing to John Muir Trauma Physicians Billing Service, which bills Medicare for the services they deliver. Of these, 39 practice at this address and 415 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 44

Anesthesiology171
Diagnostic Radiology146
Internal Medicine89
Orthopedic Surgery34
Hospitalist28
Hematology/Oncology27
Family Practice23
Gastroenterology23
36 other specialties267

Nearest to this location (20)

See all 808
Anesthesiology
NPI 1639796519
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 939-3000
✔ PECOS✔ Accepts MedicareSame address
Pulmonary Disease
NPI 1316932965
1601 YGNACIO VALLEY RD JOHN MUIR MEDICAL CENTER
Walnut Creek, CA 94598
(925) 939-3050
✔ PECOSSame address
Anesthesiology
NPI 1669527164
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 939-3000
✔ PECOSSame address
Anesthesiology
NPI 1386039584
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 939-3000
✔ PECOS✔ Accepts MedicareSame address
General Surgery
NPI 1295149540
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 937-0404
✔ PECOSSame address
Diagnostic Radiology
NPI 1780648766
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 296-7156
✔ PECOS✔ Accepts MedicareSame address
Anesthesiology
NPI 1710483201
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 939-3000
✔ PECOS✔ Accepts MedicareSame address
Anesthesiology
NPI 1548623671
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 543-0140
✔ PECOS✔ Accepts MedicareSame address
Hospitalist
NPI 1255759130
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 947-3312
✔ PECOS✔ Accepts MedicareSame address
Neurology
NPI 1518153824
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 939-3000
✔ PECOSSame address
Neurology
NPI 1649414681
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(808) 203-8671
✔ PECOSSame address
Diagnostic Radiology
NPI 1346272283
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 296-7156
✔ PECOS✔ Accepts MedicareSame address
Emergency Medicine
NPI 1174547046
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 939-3000
✔ PECOS✔ Accepts MedicareSame address
Critical Care (Intensivists)
NPI 1760415855
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 937-0404
✔ PECOSSame address
Internal Medicine
NPI 1578520003
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 947-3393
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1104845858
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 947-3393
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1235378472
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 947-3393
✔ PECOS✔ Accepts MedicareSame address
Hospitalist
NPI 1811524507
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
(925) 947-3393
✔ PECOS✔ Accepts MedicareSame address
Hematology/Oncology
NPI 1427218908
177 LA CASA VIA STE 390
Walnut Creek, CA 94598
(925) 692-5610
✔ PECOS✔ Accepts MedicareSame address
Hematology/Oncology
NPI 1669475158
177 LA CASA VIA STE 390
Walnut Creek, CA 94598
(925) 677-5041
✔ PECOS✔ Accepts MedicareSame address
See all 808 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Muir Trauma Physicians Billing Service's NPI number?

The NPI number for John Muir Trauma Physicians Billing Service is 1457400293. It was assigned to this organization in the NPPES registry on January 10, 2007.

Where is John Muir Trauma Physicians Billing Service located?

John Muir Trauma Physicians Billing Service is located at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598. The listed phone number is (925) 947-5331.

What is John Muir Trauma Physicians Billing Service's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is John Muir Trauma Physicians Billing Service enrolled in Medicare?

Yes. John Muir Trauma Physicians Billing Service is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through John Muir Trauma Physicians Billing Service?

According to the CMS Revalidation Reassignment List (October 2026 release), 808 clinicians in 44 Medicare specialties reassign their Medicare billing to John Muir Trauma Physicians Billing Service. A 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 the clinician's services. The largest specialties are Anesthesiology (171), Diagnostic Radiology (146) and Internal Medicine (89). Of these, 39 practice at this address and 415 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for John Muir Trauma Physicians Billing Service was last updated on February 23, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.