NPPES file of Aug 9, 2026

Steven Charles Namihas, MD

Family Medicine Physician · Redding, CA

Steven Charles Namihas, MD is a family medicine physician with a practice address in Redding, California, and NPI 1831293083, issued on Sep 9, 2006. Check the license (California G63396, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831293083
Name
Steven Charles Namihas
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
G63396 CA
Self-reported in NPPES; status is on the state search
Practice location
2480 Sonoma St, Redding, CA 96001
Phone
(530) 225-7800
Enumerated
Sep 9, 2006
Record last updated
Nov 10, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(530) 225-7889
Medicaid ID
00G633960 CA
Medicare enrollment
Enrolled (PECOS I20090304000174); accepts Medicare assignment
Medical or professional school
University Of California, Irvine, California College Of Medicine, 1987
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2480 Sonoma St

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

  1. Christopher Anziano, DOStudent in an Organized Health Care Education/Training Program1851033286
  2. Sai Aquisap, D.O.Student in an Organized Health Care Education/Training Program1275949257
  3. Francis Arafiles, MDStudent in an Organized Health Care Education/Training Program1285912782
  4. Paola Arteaga, DOStudent in an Organized Health Care Education/Training Program1396536876
  5. Matthew Blaisdell, D.O.Family Medicine Physician1780039164
  6. Robin Brandstetter, DO, MSFamily Medicine Physician1083318810

Verify Steven Charles Namihas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G63396
    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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55% fewer Medicare Part D claims than the average family medicine physician in 2024

1,607 Medicare Part D claims for 203 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 74 claims were for opioids.

  1. Steven Namihas1,607
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium139 claims
  2. Trazodone Hcl57 claims
  3. Levothyroxine Sodium49 claims
  4. Omeprazole48 claims
  5. Amlodipine Besylate43 claims
  6. Metformin Hcl Er38 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 84 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score72.8
  2. Costout of 100 · 30%56.2
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Dignity HealthRedding, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Steven Charles Namihas among 17,133 family medicine physician records in California

Steven Charles Namihas, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1987 · median 2005 among the 10,652 with a school on file
  • Record last updated2020 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

120 family medicine physician records list a practice address in Redding

They are 120 of the 3,572 NPPES records with a practice address in Redding, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Jeffrey Bosworth, MDRedding, CA 960011407840895
  2. Kathleen Breslin, F.N.P.Redding, CA 960011730116435
  3. Cynthia Dillon, M.D.Redding, CA 960011619977527
  4. William Harden, M.D.Redding, CA 960011992734412
  5. Richard Maples, M.D.Redding, CA 960011174552699
  6. Eileen McCallum, M.D.Redding, CA 960011700881042
  7. Douglas McMullin, MDRedding, CA 960011487681185
  8. Jennifer Moranda, M.D.Redding, CA 960011407894702

Common questions

What is Steven Charles Namihas, MD's NPI number?

Steven Charles Namihas, MD's National Provider Identifier (NPI) is 1831293083, issued on Sep 9, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Steven Charles Namihas, MD located?

The NPPES record lists a practice address at 2480 Sonoma St, Redding, CA, 96001. Phone: (530) 225-7800. Providers update this record themselves, so call before visiting.

How can I verify Steven Charles Namihas, MD's license?

NPPES lists California license number G63396, 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.

How much does Steven Charles Namihas, MD prescribe under Medicare Part D?

In 2024, Steven Charles Namihas, MD had 1,607 Medicare Part D claims for 203 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

What is Steven Charles Namihas, MD's MIPS final score?

The 2023 MIPS final score is 84 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.