Quick answers
- Does Margaret L. Blom accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret L. Blom 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 Margaret L. Blom see?
- In 2024, CMS data shows 338 Original Medicare patients and 1,227 services for Margaret L. Blom. This counts Original Medicare only and measures volume, not quality.
- What is Margaret L. Blom's NPI number?
- 1205994415. 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 Margaret L. Blom, 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 | 338 |
|---|---|
| Services billed to Medicare | 1,227 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient problem focused exam of visual system (92012)288 services
- Exam of the internal drainage system of eye (92020)252 services
- Imaging of optic nerve (92133)232 services
- Established patient complete exam of visual system (92014)222 services
- Exam of visual field with extended testing (92083)191 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 pressure64%
- High cholesterol64%
- Arthritis40%
- Anxiety18%
- Diabetes17%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)17%
Hospitals where Margaret L. Blom works
Medicare's Facility Affiliation Data lists Margaret L. Blom 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.
- Northern Light Maine Coast HospitalEllsworth, ME · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 200050
Practice locations
Addresses where Margaret L. Blom is enrolled with Medicare (CMS data updated October 2, 2026).
- 35 Eastward Ln, Suite 106Ellsworth, ME 04605 (207) 667‑5999
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Ellsworth
Clinicians with the same Medicare primary specialty in Ellsworth, ME — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Warren Alpert Medical School Of Brown University |
| Graduation year | 1983 (43 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1205994415 |
| 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