James Demer, MD
NPI 1891779849 · Psychiatry Physician · Alexandria Bay, NY
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Demer, MD is a Psychiatry Physician provider in Alexandria Bay, NY (NPI 1891779849).
Provider details
- NPI number
- 1891779849
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 233591-1 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2005-12-02
- Last updated
- 2016-01-15
Frequently asked questions
- What is James Demer's NPI number?
- James Demer's National Provider Identifier (NPI) is 1891779849, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Demer's specialty?
- James Demer is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is James Demer located?
- James Demer's practice location on file with NPPES is 4 Fuller St, Alexandria Bay, NY 13607-1316.
- What is James Demer's phone number?
- The practice phone number listed in the NPPES registry for James Demer is (315) 482-2511.
- Does James Demer accept Medicare?
- James Demer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Demer's NPI active?
- Yes — James Demer's NPI (1891779849) is active in the NPPES registry as of the last update on 2016-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.