Keith Fish, MD
NPI 1861504110 · Internal Medicine Physician · Lebanon, NH
Enrolled with Medicare as Practitioner - Sleep Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Keith Fish, MD is a Internal Medicine Physician provider in Lebanon, NH (NPI 1861504110).
Provider details
- NPI number
- 1861504110
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 1382969 (CT)
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
- 2006-08-31
- Last updated
- 2016-10-07
Frequently asked questions
- What is Keith Fish's NPI number?
- Keith Fish's National Provider Identifier (NPI) is 1861504110, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Keith Fish's specialty?
- Keith Fish is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Keith Fish located?
- Keith Fish's practice location on file with NPPES is 1 Medical Center Drive, Lebanon, NH 03756-0001.
- What is Keith Fish's phone number?
- The practice phone number listed in the NPPES registry for Keith Fish is (603) 650-3630.
- Does Keith Fish accept Medicare?
- Keith Fish is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Keith Fish's NPI active?
- Yes — Keith Fish's NPI (1861504110) is active in the NPPES registry as of the last update on 2016-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.