Quick answers
- Does Ann Marie Joyce accept Medicare assignment?
- Yes. Medicare's clinician data says Ann Marie Joyce 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 Ann Marie Joyce see?
- In 2024, CMS data shows 388 Original Medicare patients and 633 services for Ann Marie Joyce. This counts Original Medicare only and measures volume, not quality.
- What is Ann Marie Joyce's NPI number?
- 1447248042. 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 Ann Marie Joyce, 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 | 388 |
|---|---|
| Services billed to Medicare | 633 |
| Different services or procedures | 59 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)71 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)70 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)55 services
- Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope through mouth (43237)41 services
- Biopsy of large bowel using a flexible endoscope (45380)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 cholesterol75%
- High blood pressure73%
- Arthritis42%
- Anxiety33%
- Chronic kidney disease28%
- Ischemic heart disease27%
Hospitals where Ann Marie Joyce works
Medicare's Facility Affiliation Data lists Ann Marie Joyce 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.
- Emerson Hospital -W Concord, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220084
- Lowell General HospitalLowell, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220063
- Newton-Wellesley HospitalNewton, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220101
Practice locations
Addresses where Ann Marie Joyce is enrolled with Medicare (CMS data updated October 2, 2026).
- 2000 Washington St, Suite 368Newton, MA 02462 (617) 969‑1227
- 4 Meeting House Rd, Suite 6 8Chelmsford, MA 01824 (978) 454‑9811
- 45 A Discovery WayActon, MA 01720 (978) 429‑2010
Group practices
Medicare enrollment lists Ann Marie Joyce as a member of these groups (CMS data updated October 2, 2026).
- Digestive Health Specialists, P.C.13 clinicians in the group
- Gastroenterology Healthcare Associates PC11 clinicians in the group
- Middlesex Gastroenterolgy PC11 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Newton
Clinicians with the same Medicare primary specialty in Newton, MA — not a recommendation.
Other clinicians in Digestive Health Specialists, P.C.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1447248042 |
| 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