Joan Johnston, FNP
NPI 1427158674 · Family Nurse Practitioner · Pittsfield, MA
Joan Johnston, FNP is a Family Nurse Practitioner provider in Pittsfield, MA (NPI 1427158674).
Provider details
- NPI number
- 1427158674
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 109903 (MA)
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
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
- 2006-09-25
- Last updated
- 2025-09-11
Frequently asked questions
- What is Joan Johnston's NPI number?
- Joan Johnston's National Provider Identifier (NPI) is 1427158674, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joan Johnston's specialty?
- Joan Johnston is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joan Johnston located?
- Joan Johnston's practice location on file with NPPES is 165 Tor Ct, Pittsfield, MA 01201-3001.
- What is Joan Johnston's phone number?
- The practice phone number listed in the NPPES registry for Joan Johnston is (413) 445-9243.
- Is Joan Johnston's NPI active?
- Yes — Joan Johnston's NPI (1427158674) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.