JOHN MUIR MAGNETIC IMAGING CENTER
JOHN MUIR MAGNETIC IMAGING CENTER is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1235184110, based in Walnut Creek, CA. It is classified under Diagnostic Radiology Physician.
Getting there
The practice address on file is 1601 YGNACIO VALLEY RD, Walnut Creek, CA 94598. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 9032019625
Enrolled in Medicare 16 times, across 16 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| California | O20040110000222 | Part B Supplier - Clinic/group Practice |
| Hawaii | O20190808000596 | Part B Supplier - Clinic/group Practice |
| New Jersey | O20190828000008 | Part B Supplier - Clinic/group Practice |
| New York | O20190906000781 | Part B Supplier - Clinic/group Practice |
| North Carolina | O20191226001414 | Part B Supplier - Clinic/group Practice |
| Kentucky | O20200320001952 | Part B Supplier - Clinic/group Practice |
| Maryland | O20200504000269 | Part B Supplier - Clinic/group Practice |
| Pennsylvania | O20211116000081 | Part B Supplier - Clinic/group Practice |
| Washington | O20230505002303 | Part B Supplier - Clinic/group Practice |
| District of Columbia | O20230614000905 | Part B Supplier - Clinic/group Practice |
| Michigan | O20230929000585 | Part B Supplier - Clinic/group Practice |
| Delaware | O20231108003589 | Part B Supplier - Clinic/group Practice |
| Florida | O20240124001163 | Part B Supplier - Clinic/group Practice |
| Texas | O20241202003134 | Part B Supplier - Clinic/group Practice |
| Ohio | O20250221002593 | Part B Supplier - Clinic/group Practice |
| Arkansas | O20250604001776 | Part B Supplier - Clinic/group Practice |
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. There are 16 separate enrolment records across 16 states (CA, HI, NJ, NY, NC, KY, MD, PA, WA, DC, MI, DE, FL, TX, OH, AR). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Diagnostic Radiology covers
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease. NUCC Health Care Provider Taxonomy, code 2085R0202X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1235184110 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | May 22, 2006 |
| Last updated | Mar 18, 2026 |
| Status | Active |
| Practice address |
1601 YGNACIO VALLEY RD Walnut Creek, CA 94598 (925) 296-7156 Fax (925) 296-7174 |
| Mailing address |
2125 OAK GROVE RD SUITE 200 Walnut Creek, CA 94598 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 2 | 3 | 5 | 1 | 8 | 4 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 6 | 5 | 2 | 8 | 8 | 1 | 2 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.