Quick answers
- Does Maryann L. Millar accept Medicare assignment?
- Yes. Medicare's clinician data says Maryann L. Millar accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Maryann L. Millar see?
- In 2024, CMS data shows 124 Original Medicare patients and 329 services for Maryann L. Millar. This counts Original Medicare only and measures volume, not quality.
- What is Maryann L. Millar's NPI number?
- 1659471191. 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 Maryann L. Millar, 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 patients | 124 |
|---|---|
| Services billed to Medicare | 329 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)126 services
- Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous (G0328)110 services
- Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina (76830)20 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)15 services
- Body fluid ph level (83986)11 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 cholesterol67%
- High blood pressure56%
- Arthritis41%
- Anxiety31%
- Osteoporosis31%
- Chronic kidney disease19%
Hospitals where Maryann L. Millar works
Medicare's Facility Affiliation Data lists Maryann L. Millar 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.
- Winchester HospitalWinchester, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220105
Practice locations
Addresses where Maryann L. Millar is enrolled with Medicare (CMS data updated October 2, 2026).
- 300 Tradecenter, Suite 4750Woburn, MA 01801 (781) 933‑9993
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Woburn
Clinicians with the same Medicare primary specialty in Woburn, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Brody School Of Medicine At East Carolina University |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659471191 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians