Donna Isherwood, FNP
NPI 1962743633 · Family Nurse Practitioner · Lewiston, ME
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donna Isherwood, FNP is a Family Nurse Practitioner provider in Lewiston, ME (NPI 1962743633).
Provider details
- NPI number
- 1962743633
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- CNP26595 (ME)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
- 2013-03-06
- Last updated
- 2022-01-21
- Certified
- 2022-01-21
Frequently asked questions
- What is Donna Isherwood's NPI number?
- Donna Isherwood's National Provider Identifier (NPI) is 1962743633, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donna Isherwood's specialty?
- Donna Isherwood is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Donna Isherwood located?
- Donna Isherwood's practice location on file with NPPES is 330 Sabattus St, Lewiston, ME 04240-5553.
- What is Donna Isherwood's phone number?
- The practice phone number listed in the NPPES registry for Donna Isherwood is (207) 755-3160.
- Does Donna Isherwood accept Medicare?
- Donna Isherwood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donna Isherwood's NPI active?
- Yes — Donna Isherwood's NPI (1962743633) is active in the NPPES registry as of the last update on 2022-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.