Quick answers
- Does Marie M. Caldwell accept Medicare assignment?
- Yes. Medicare's clinician data says Marie M. Caldwell 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 Marie M. Caldwell see?
- In 2024, CMS data shows 170 Original Medicare patients and 331 services for Marie M. Caldwell. This counts Original Medicare only and measures volume, not quality.
- What is Marie M. Caldwell's NPI number?
- 1972863447. 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 Marie M. Caldwell, 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 | 170 |
|---|---|
| Services billed to Medicare | 331 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)131 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)56 services
- Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)46 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)28 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)24 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 blood pressure69%
- High cholesterol64%
- Arthritis50%
- Diabetes48%
- Osteoporosis36%
- Depression34%
Hospitals where Marie M. Caldwell works
Medicare's Facility Affiliation Data lists Marie M. Caldwell 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.
- LincolnhealthDamariscotta, ME · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 201302
- MaineHealth Maine Medical CenterPortland, ME · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 200009
- MaineHealth Mid Coast HospitalBrunswick, ME · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 200021
- MaineHealth Stephens HospitalNorway, ME · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 201315
- St Mary's Regional Medical CenterLewiston, ME · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 200034
Practice locations
Addresses where Marie M. Caldwell is enrolled with Medicare (CMS data updated October 2, 2026).
- 175 US Route 1Scarborough, ME 04074 (207) 396‑7700
- 22 Bramhall StPortland, ME 04102
Group practices
Medicare enrollment lists Marie M. Caldwell as a member of this group (CMS data updated October 2, 2026).
- MaineHealth2,633 clinicians in the group
Specialties
- Endocrinologyprimary
- Internal Medicinealso
Other endocrinologists in Scarborough
Clinicians with the same Medicare primary specialty in Scarborough, ME — not a recommendation.
Other clinicians in MaineHealth
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1972863447 |
| 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