Hospital Medicine Services of Maine LLC
NPI 1538638432 · Hospitalist Physician · Ellsworth, ME
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hospital Medicine Services of Maine LLC is a Hospitalist Physician organization in Ellsworth, ME (NPI 1538638432).
Provider details
- NPI number
- 1538638432
- Entity type
- Organization
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- David Istvan, President(917) 679-1675
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
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
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
Additional practice locations (3)
- 57 Water StBlue Hill, ME 04614-5231Phone: (865) 693-1000
- 447 N Main StPittsfield, ME 04967-1199Phone: (865) 693-1000
- 200 Kennedy Memorial DrWaterville, ME 04901-4526Phone: (865) 693-1000
Registry dates
- Enumerated
- 2018-11-20
- Last updated
- 2019-09-16
Frequently asked questions
- What is Hospital Medicine Services of Maine LLC's NPI number?
- Hospital Medicine Services of Maine LLC's National Provider Identifier (NPI) is 1538638432, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Hospital Medicine Services of Maine LLC?
- Hospital Medicine Services of Maine LLC is classified in the NPPES registry as Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Hospital Medicine Services of Maine LLC located?
- Hospital Medicine Services of Maine LLC's practice location on file with NPPES is 50 Union St, Ellsworth, ME 04605-1534.
- What is Hospital Medicine Services of Maine LLC's phone number?
- The practice phone number listed in the NPPES registry for Hospital Medicine Services of Maine LLC is (865) 693-1000.
- Does Hospital Medicine Services of Maine LLC accept Medicare?
- Hospital Medicine Services of Maine LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Hospital Medicine Services of Maine LLC?
- The authorized official listed on Hospital Medicine Services of Maine LLC's NPPES record is David Istvan, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Hospital Medicine Services of Maine LLC's NPI active?
- Yes — Hospital Medicine Services of Maine LLC's NPI (1538638432) is active in the NPPES registry as of the last update on 2019-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.