NPPES file of Aug 9, 2026

Mark Richey, M.D.

Diagnostic Radiology Physician · Grass Valley, CA

Mark Richey, M.D. is a diagnostic radiology physician with a practice address in Grass Valley, California, and NPI 1407876352, issued on Jul 20, 2006. Check the license (California G54942, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1407876352
Name
Mark Richey
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
G54942 CA
Self-reported in NPPES; status is on the state search
Practice location
155 Glasson Way, Grass Valley, CA 95945
Phone
(530) 274-6107
Enumerated
Jul 20, 2006
Record last updated
Jan 22, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(530) 274-6059
Medicaid ID
00G549420 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 155 Glasson Way

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Hazel Mae Abraham, M.D.Hospitalist Physician1194011213
  2. Josephine Aguilar-Jakthong, MDAnatomic Pathology & Clinical Pathology Physician1710249693
  3. Joseph Britton, M.D.Emergency Medicine Physician1902805831
  4. Stuart Campbell, M.D.Internal Medicine Physician1306842588
  5. Samuel Chan, M.D.Anesthesiology Physician1043286974
  6. Jed ColvinFamily Nurse Practitioner1528315538

Verify Mark Richey in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G54942
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Mark Richey among 4,500 diagnostic radiology physician records in California

Mark Richey, M.D. is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 52% newer
  • In a Medicare fileNo · 74% of these records are
  • In the CMS Doctors and Clinicians fileNo · 70% of these records are
  • Record last updated2013 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Diagnostic Radiology Physician providers in California

There are 4,500 diagnostic radiology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Melisa Agness, MDGrass Valley, CA 959451184763575
  2. Michael Hallenbeck, M.D.Grass Valley, CA 959451285654145
  3. Patricia Niemeyer, M.D.Grass Valley, CA 959451548316565
  4. Anna Wilson, D.O.Grass Valley, CA 959451447561535
  5. Susan Davin Hancock, RTCRTDurham, CA 959381942054119
  6. Chadwick Morgan, M.D.Colusa, CA 959321417961525
  7. Frederick Brandon, DOChico, CA 959281235118613
  8. Lara Bussey, D.O.Chico, CA 959261851590061

Common questions

What is Mark Richey, M.D.'s NPI number?

Mark Richey, M.D.'s National Provider Identifier (NPI) is 1407876352, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Richey, M.D. located?

The NPPES record lists a practice address at 155 Glasson Way, Grass Valley, CA, 95945. Phone: (530) 274-6107. Providers update this record themselves, so call before visiting.

How can I verify Mark Richey, M.D.'s license?

NPPES lists California license number G54942, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.