Ellen Spar, M.D.
NPI 1285686386 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ellen Spar, M.D. is a Internal Medicine Physician provider in Boston, MA (NPI 1285686386).
Provider details
- NPI number
- 1285686386
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 72200 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,866 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 434 | $9 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 242 | $13 |
| Hemoglobin A1c Level83036 | 191 | $10 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 175 | $48 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 138 | $91 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 122 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 108 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 578 | 170 |
| Amlodipine Besylate | 377 | 104 |
| Levothyroxine Sodium | 246 | 66 |
| Losartan Potassium | 240 | 65 |
| Omeprazole | 213 | 68 |
| Metoprolol Succinate | 209 | 52 |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-17
- Last updated
- 2020-11-17
- Certified
- 2020-11-17
Frequently asked questions
- What is Ellen Spar's NPI number?
- Ellen Spar's National Provider Identifier (NPI) is 1285686386, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Spar's specialty?
- Ellen Spar is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ellen Spar located?
- Ellen Spar's practice location on file with NPPES is 133 Brookline Ave, Boston, MA 02215-3904.
- What is Ellen Spar's phone number?
- The practice phone number listed in the NPPES registry for Ellen Spar is (617) 421-8843.
- Does Ellen Spar accept Medicare?
- Ellen Spar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ellen Spar's NPI active?
- Yes — Ellen Spar's NPI (1285686386) is active in the NPPES registry as of the last update on 2020-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.