John Ross Nayduch, MD
Family Medicine Physician · Chico, CA
John Ross Nayduch, MD is a family medicine physician with a practice address in Chico, California, and NPI 1699760975, issued on Sep 13, 2005. Check the license (California G80231, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Ross Nayduch
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G80231 CA
Self-reported in NPPES; status is on the state search - Practice location
- 114 Mission Ranch Blvd, Chico, CA 95926
- Phone
- (530) 894-0500
- Enumerated
- Sep 13, 2005
- Record last updated
- Aug 12, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (530) 345-8532
- Medicaid ID
- 00G802310 CA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 114 Mission Ranch Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Ross Nayduch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G80231Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average family medicine physician in 2024
1,814 Medicare Part D claims for 340 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Atorvastatin Calcium146 claims
- Levothyroxine Sodium117 claims
- Amlodipine Besylate113 claims
- Losartan Potassium97 claims
- Simvastatin71 claims
- Lisinopril68 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
John Ross Nayduch among 17,133 family medicine physician records in California
John Ross Nayduch, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2009 · 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).
43 family medicine physician records list a practice address in Chico
They are 43 of the 3,684 NPPES records with a practice address in Chico, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Chico → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Courtney Badour, DOChico, CA 959261093718637
- Oswald Chan, M.D.Chico, CA 959261780676882
- Amy Darwin, MDChico, CA 959261407827660
- Frederick David, MDChico, CA 959261255313565
- Walid Faraj, D.O.Chico, CA 959261396736245
- Terrance Foster, M.D.Chico, CA 959261013970342
- Tanya Layne, MDChico, CA 959261396740429
- Joseph Lee, MDChico, CA 959261821093584
Common questions
What is John Ross Nayduch, MD's NPI number?
John Ross Nayduch, MD's National Provider Identifier (NPI) is 1699760975, issued on Sep 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Ross Nayduch, MD located?
The NPPES record lists a practice address at 114 Mission Ranch Blvd, Chico, CA, 95926. Phone: (530) 894-0500. Providers update this record themselves, so call before visiting.
How can I verify John Ross Nayduch, MD's license?
NPPES lists California license number G80231, 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 John Ross Nayduch, MD prescribe under Medicare Part D?
In 2024, John Ross Nayduch, MD had 1,814 Medicare Part D claims for 340 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is John Ross Nayduch, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.