Timothy R. Day
Physician Assistant · Sonora, CA
Timothy R. Day is a physician assistant with a practice address in Sonora, California, and NPI 1730196130, issued on Aug 1, 2006. Check the license (California PA010895, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Timothy R. Day
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA010895 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 Hospital RD, Sonora, CA 95370
- Phone
- (209) 533-7128
- Enumerated
- Aug 1, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20041008000395); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 101 Hospital RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brainard Duncan, DDSDentist1982687976
- Sharon Johnson, M.D.Anesthesiology Physician1255387072
- Wayne Mathe, DDSDentist1063537868
- Judith Vyhmeister, M.D.Psychiatry Physician1619024908
Verify Timothy R. Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA010895Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average physician assistant in 2024
2,658 Medicare Part D claims for 218 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 88 claims were for opioids.
Most prescribed
- Amlodipine Besylate116 claims
- Albuterol Sulfate Hfa107 claims
- Lisinopril103 claims
- Metoprolol Succinate78 claims
- Omeprazole77 claims
- Gabapentin74 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 MIPS final score for 2023 (Medicare payment program): 97.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Adventist Health Physicians NetworkAngels Camp, CA
- Sonora Community HospitalSonora, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy R. Day among 14,451 physician assistant records in California
Timothy R. Day is one of 14,451 physician assistant records with a practice address in California. 75% 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 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1980 · median 2018 among the 7,214 with a school on file
- Record last updated2007 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 physician assistant records list a practice address in Sonora
They are 11 of the 629 NPPES records with a practice address in Sonora, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Sonora → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Claire Caldera, PASonora, CA 953701316863640
- Nickolas Dobler, PASonora, CA 953701588641351
- Jill Dudley, PA-CSonora, CA 953701669447819
- Barbara FeldhausSonora, CA 953701326704651
- Kyla Marshall, PA-CSonora, CA 953701881430569
- Jester OdruniaSonora, CA 953701114722592
- Heather Price, PA-CSonora, CA 953701447208665
- Wyatt Stebbins, PA-CSonora, CA 953701003264359
Common questions
What is Timothy R. Day's NPI number?
Timothy R. Day's National Provider Identifier (NPI) is 1730196130, issued on Aug 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy R. Day located?
The NPPES record lists a practice address at 101 Hospital RD, Sonora, CA, 95370. Phone: (209) 533-7128. Providers update this record themselves, so call before visiting.
How can I verify Timothy R. Day's license?
NPPES lists California license number PA010895, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Timothy R. Day prescribe under Medicare Part D?
In 2024, Timothy R. Day had 2,658 Medicare Part D claims for 218 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Timothy R. Day's MIPS final score?
The 2023 MIPS final score is 97.1 of 100. 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.