Registry data as of Aug 27, 2026

Christopher Callahan, NP

Nurse Practitioner · North Reading, MA

Christopher Callahan, NP is a nurse practitioner with a practice address in North Reading, Massachusetts, and NPI 1366335325, issued on May 29, 2025. Check the license (Massachusetts RN217427, as entered in NPPES) with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1366335325
Name
Christopher Callahan
Credential
NP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
RN217427 MA
Self-reported in NPPES; status is on the state search
Practice location
18 Strawberry LN, North Reading, MA 01864
Phone
(339) 222-0318
Enumerated
May 29, 2025
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Christopher Callahan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license RN217427    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

5 nurse practitioner records list a North Reading practice address

They are 5 of the 148 NPPES records with a North Reading practice address, and 3,234 nurse practitioner records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 5 in North Reading → All 3,234 in Massachusetts → Every provider in North Reading →

Other nurse practitioner records in Massachusetts

  1. Carolyn Abbanat Villafane, NPBoston, MA1598810269
  2. Lisa Abbondanza, CNPFranklin, MA1770892630
  3. Fatima AbdallaMelrose, MA1326407529
  4. Erika AbeidFairhaven, MA1831084839
  5. Esayas Abraham, NPChelsea, MA1851275895
  6. Alissa AbrahamsonFramingham, MA1285434753
  7. Lauren Abric, CNPMilford, MA1235591447
  8. Amaka Achibiri, FNPWestwood, MA1932061736
  9. Jennifer Ackil, NPBoston, MA1730406398
  10. John AcordFairhaven, MA1013531086

Common questions

What is Christopher Callahan, NP's NPI number?

Christopher Callahan, NP's National Provider Identifier (NPI) is 1366335325, issued on May 29, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Christopher Callahan, NP located?

The NPPES record lists a practice address at 18 Strawberry LN, North Reading, MA, 01864. Phone: (339) 222-0318. Providers update this record themselves, so call before visiting.

How can I verify Christopher Callahan, NP's license?

NPPES lists Massachusetts license number RN217427, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.