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Family Practice

Millie Mae Hathaway, DO

Works at hospitals in Pomona, CA · Upland, CA · California

Summary

Dr. Millie Mae Hathaway, DO is a family doctor at 1601 Monte Vista Ave, Suite 100, Claremont, CA 91711. Phone: (909) 630-7893. May accept Medicare assignment. In 2024, Millie Mae Hathaway had 26 Original Medicare patients and 103 services. NPI 1043847627. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Millie Mae Hathaway, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Millie Mae Hathaway accept Medicare assignment?
Medicare's clinician data says Millie Mae Hathaway may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Millie Mae Hathaway see?
In 2024, CMS data shows 26 Original Medicare patients and 103 services for Millie Mae Hathaway. This counts Original Medicare only and measures volume, not quality.
What is Millie Mae Hathaway's NPI number?
1043847627. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Millie Mae Hathaway, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients26
Services billed to Medicare103
Different services or procedures8
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)51 services
  2. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)35 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol73%
  • High blood pressure69%
  • Arthritis69%

Hospitals where Millie Mae Hathaway works

Medicare's Facility Affiliation Data lists Millie Mae Hathaway at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Millie Mae Hathaway is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Millie Mae Hathaway as a member of this group (CMS data updated October 2, 2026).

  • Premier Family Medicine Associates, Inc65 clinicians in the group

Specialties

Find other Family Practice doctors in California →

Other family doctors in Claremont

Clinicians with the same Medicare primary specialty in Claremont, CA — not a recommendation.

All family doctors in Claremont →

Other clinicians in Premier Family Medicine Associates, Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Graduation year2020 (6 years since medical school)
Gender (as listed)Female
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1043847627
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians