Miriam Ida Harris, M.D.
Family Medicine Physician · Willits, CA
Miriam Ida Harris, M.D. is a family medicine physician with a practice address in Willits, California, and NPI 1033476452, issued on Apr 23, 2012. Check the license (California A129594, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Miriam Ida Harris
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A129594 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1245 S Main St, Willits, CA 95490
- Phone
- (707) 459-6861
- Enumerated
- Apr 23, 2012
- Record last updated
- Nov 29, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (707) 459-3057
- Medicare enrollment
- Enrolled (PECOS I20151103000717); accepts Medicare assignment
- Medical or professional school
- University Of Arizona College Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1245 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jordan Kruse, RN, FNPPrimary Care Nurse Practitioner1154204378
- Monte Lieberfarb, M.D.Family Medicine Physician1922078898
- Angus Matheson, M.D.Family Medicine Physician1053381939
- Donald Matheson, M.D.Family Medicine Physician1629060900
- Lisa McCurley, ARNPFamily Nurse Practitioner1326391624
- Glenn Rogers, M.D.Internal Medicine Physician1821091133
Verify Miriam Ida Harris in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A129594Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% more Medicare Part D claims than the average family medicine physician in 2024
6,234 Medicare Part D claims for 368 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 504 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen251 claims
- Atorvastatin Calcium219 claims
- Amlodipine Besylate204 claims
- Lisinopril172 claims
- Levothyroxine Sodium162 claims
- Omeprazole159 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): 73.8 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- John R Glyer D Mills Matheson And Margaret Arner Mds PtrWillits, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Miriam Ida Harris among 17,133 family medicine physician records in California
Miriam Ida Harris, M.D. 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 2012, is newer than 66% of them.
- NPI issued2012 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2012 · median 2005 among the 10,652 with a school on file
- Record last updated2018 · 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).
7 family medicine physician records list a practice address in Willits
They are 7 of the 162 NPPES records with a practice address in Willits, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Willits → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Margaret Arner, M.D.Willits, CA 954901063482891
- John Glyer, M.D,Willits, CA 954901801866785
- Monte Lieberfarb, M.D.Willits, CA 954901922078898
- Donald Matheson, M.D.Willits, CA 954901629060900
- Angus Matheson, M.D.Willits, CA 954901053381939
- Elizabeth Whipkey-Olson, D.O.Willits, CA 954901306870605
- Jamila Benn, MDWindsor, CA 954921477564946
- Elizabeth Flower, M.D.Windsor, CA 954921538173141
Common questions
What is Miriam Ida Harris, M.D.'s NPI number?
Miriam Ida Harris, M.D.'s National Provider Identifier (NPI) is 1033476452, issued on Apr 23, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Miriam Ida Harris, M.D. located?
The NPPES record lists a practice address at 1245 S Main St, Willits, CA, 95490. Phone: (707) 459-6861. Providers update this record themselves, so call before visiting.
How can I verify Miriam Ida Harris, M.D.'s license?
NPPES lists California license number A129594, 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 Miriam Ida Harris, M.D. prescribe under Medicare Part D?
In 2024, Miriam Ida Harris, M.D. had 6,234 Medicare Part D claims for 368 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Miriam Ida Harris, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.8 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.