Michael Eliastam, M.D.
NPI 1346307766 · Internal Medicine Physician · Lancaster, MA
Michael Eliastam, M.D. is a Internal Medicine Physician provider in Lancaster, MA (NPI 1346307766).
Provider details
- NPI number
- 1346307766
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 73427 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-03
- Last updated
- 2026-04-26
Frequently asked questions
- What is Michael Eliastam's NPI number?
- Michael Eliastam's National Provider Identifier (NPI) is 1346307766, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Eliastam's specialty?
- Michael Eliastam is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Eliastam located?
- Michael Eliastam's practice location on file with NPPES is 863 Main Street, Lancaster, MA 01523.
- What is Michael Eliastam's phone number?
- The practice phone number listed in the NPPES registry for Michael Eliastam is (781) 248-4978.
- Is Michael Eliastam's NPI active?
- Yes — Michael Eliastam's NPI (1346307766) is active in the NPPES registry as of the last update on 2026-04-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.