Christopher Callahan, NP
NPI 1366335325 · Nurse Practitioner · North Reading, MA
Christopher Callahan, NP is a Nurse Practitioner provider in North Reading, MA (NPI 1366335325).
Provider details
- NPI number
- 1366335325
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Male
- Sole proprietor
- Yes
- License
- RN217427 (MA)
Specialties & taxonomies
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
1 yr 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
- 2025-05-29
- Last updated
- 2025-05-29
- Certified
- 2025-05-29
Frequently asked questions
- What is Christopher Callahan's NPI number?
- Christopher Callahan's National Provider Identifier (NPI) is 1366335325, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Callahan's specialty?
- Christopher Callahan is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Christopher Callahan located?
- Christopher Callahan's practice location on file with NPPES is 18 Strawberry Ln, North Reading, MA 01864-2454.
- What is Christopher Callahan's phone number?
- The practice phone number listed in the NPPES registry for Christopher Callahan is (339) 222-0318.
- Is Christopher Callahan's NPI active?
- Yes — Christopher Callahan's NPI (1366335325) is active in the NPPES registry as of the last update on 2025-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.