Millie Mae Hathaway, DO
Family Medicine Physician · Claremont, CA
Millie Mae Hathaway, DO is a family medicine physician with a practice address in Claremont, California, and NPI 1043847627, issued on Mar 24, 2020. Check the license (California 20A20053, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Millie Mae Hathaway
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A20053 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1601 Monte Vista Ave Ste 100, Claremont, CA 91711
- Phone
- (909) 630-7938
- Enumerated
- Mar 24, 2020
- Record last updated
- Feb 25, 2026
- Fax
- (909) 469-2118
- Medicare enrollment
- Enrolled (PECOS I20230525002823); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1601 Monte Vista Ave Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Victor Alvarez Casillas, SA-C, M.D.(IMG)Family Medicine Physician1104111566
- Thuy BachPhysician Assistant1912443086
- Janae HarrisFamily Nurse Practitioner1003469693
- Lester Holstein, MDFamily Medicine Physician1720088792
- Jeffrey Ijadi, MDSports Medicine (Family Medicine) Physician1134415854
- Tiffany Kilbas, D.O.Family Medicine Physician1841855962
Verify Millie Mae Hathaway in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A20053Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average family medicine physician in 2024
583 Medicare Part D claims for 96 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium21 claims
- Ozempic19 claims
- Jardiance18 claims
- Furosemide15 claims
- Omeprazole15 claims
- Diclofenac Sodium14 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): 36 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
- Premier Family Medicine Associates, IncClaremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
34 family medicine physician records list a practice address in Claremont
They are 34 of the 800 NPPES records with a practice address in Claremont, and 17,133 family medicine physician records in California.
All 34 in Claremont → All 17,133 in California → Every provider in Claremont →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Millie Mae Hathaway, DO's NPI number?
Millie Mae Hathaway, DO's National Provider Identifier (NPI) is 1043847627, issued on Mar 24, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Millie Mae Hathaway, DO located?
The NPPES record lists a practice address at 1601 Monte Vista Ave Ste 100, Claremont, CA, 91711. Phone: (909) 630-7938. Providers update this record themselves, so call before visiting.
How can I verify Millie Mae Hathaway, DO's license?
NPPES lists California license number 20A20053, 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 Millie Mae Hathaway, DO prescribe under Medicare Part D?
In 2024, Millie Mae Hathaway, DO had 583 Medicare Part D claims for 96 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Millie Mae Hathaway, DO's MIPS final score?
The 2023 MIPS final score is 36 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.