JOHN MUIR MAGNETIC IMAGING CENTER
NPI 1235184110
Radiology - Diagnostic Radiology in Walnut Creek, CA
NPI Status: Active since May 22, 2006
Contact Information
1601 YGNACIO VALLEY RD
WALNUT CREEK, CA
ZIP 94598
Phone: (925) 296-7156
Fax: (925) 296-7174
- Organization
- Radiology
- Diagnostic Radiology
- CLIA Number: 05D0601536
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 04-01-2027
About JOHN MUIR MAGNETIC IMAGING CENTER
This page provides the complete NPI Profile along with additional information for John Muir Magnetic Imaging Center, a provider established in Walnut Creek, California operating as a Radiology, focusing in diagnostic radiology . The healthcare provider is registered in the NPI registry with number 1235184110 assigned on May 2006. The practitioner's primary taxonomy code is 2085R0202X. The provider is registered as an organization and their NPI record was last updated March 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Ronald Chan Md (Chairman)
- NPI
- 1235184110
- Provider Name
- JOHN MUIR MAGNETIC IMAGING CENTER
- Entity Type
- Organization
- Location Address
- 1601 YGNACIO VALLEY RD WALNUT CREEK, CA 94598
- Location Phone
- (925) 296-7156
- Location Fax
- (925) 296-7174
- Mailing Address
- 2125 OAK GROVE RD SUITE 200 WALNUT CREEK, CA 94598
- Mailing Phone
- (925) 296-7156
- Mailing Fax
- (925) 296-7174
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 05-22-2006
- Last Update Date
- 03-18-2026
- Code Navigator
Location Map
Secondary Locations
- 177 La Casa Via
Walnut Creek, CA 94598
(925) 295-1545 - 2410 High School Ave
Concord, CA 94520
(925) 687-5600
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Radiology Diagnostic Radiology
- Taxonomy Code
- 2085R0202X
- Type
- Allopathic & Osteopathic Physicians
- Taxonomy Description
- A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
Group Taxonomy 193400000X SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.
CLIA Information
The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:
- CLIA Number
- 05D0601536
- Facility Type
- Physician Office
- Certificate Effective Date
- April 02, 2025
- Certificate Expiration Date
- April 01, 2027
- Laboratory Director
- DR. RICHARD LONG
- Certificate Type
- Certificate for Provider-Performed Microscopy Procedures (PPMP)
- Certificate Type Description
- This CLIA certificate is issued to John Muir Magnetic Imaging Center in which a physician, midlevel practitioner or dentist that performs specific microscopy procedures during the course of a patient's visit. A limited list of provider-performed microscopy procedures is included under this certificate type, which are categorized as moderate complexity testing.
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1235184110, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 60 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1235184110, enumerated as an "organization" on May 22, 2006.
The provider is located at 1601 YGNACIO VALLEY RD WALNUT CREEK, CA 94598 and the phone number is (925) 296-7156.
Radiology with taxonomy code 2085R0202X and a focus in Diagnostic Radiology.
