NPPES file of Aug 9, 2026

Paul John Callahan, PSY.D.

Clinical Child & Adolescent Psychologist · Cambridge, MA

Paul John Callahan, PSY.D. is a clinical child & adolescent psychologist with a practice address in Cambridge, Massachusetts, and NPI 1114062239, issued on Feb 20, 2007. Check the license (Massachusetts 6376, 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, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1114062239
Name
Paul John Callahan
Credential
PSY.D.
Primary taxonomy
Clinical Child & Adolescent Psychologist 103TC2200X
License number
6376 MA
Self-reported in NPPES; status is on the state search
Practice location
2557 Massachusetts Ave, Cambridge, MA 02140
Phone
(781) 643-1020
Enumerated
Feb 20, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20081120000901); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical child & adolescent psychologist records → All 318 in Massachusetts → Look up another NPI →

Also registered at 2557 Massachusetts Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Michele Debiasse, PHD, RDN, LDNRegistered Dietitian1457119539
  2. Lauren Fatovic, LICSWClinical Social Worker1700360955
  3. Judith Goldberg, LICSWClinical Social Worker1467602722
  4. Kristin Hall, LMHCMental Health Counselor1508032145
  5. Jennifer Heinen, RDRegistered Dietitian1033547039
  6. Valerie Kirr, LMHCMental Health Counselor1790855393

Verify Paul John 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 6376    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

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Paul John Callahan among 318 clinical child & adolescent psychologist records in Massachusetts

Paul John Callahan, PSY.D. is one of 318 clinical child & adolescent psychologist records with a practice address in Massachusetts. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 12% of them.

  • NPI issued2007 · 12% of these records are older, 69% newer
  • In a Medicare fileNo · 3% of these records are
  • In the CMS Doctors and Clinicians fileYes · 7% of these records are
  • Graduated1991 · median 1999 among the 22 with a school on file
  • Record last updated2007 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC2200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Child & Adolescent Psychologist providers in Massachusetts

There are 318 clinical child & adolescent psychologist records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 318 in Massachusetts → Every provider in Cambridge → Clinical Child & Adolescent Psychologist nationwide →

The 8 clinical child & adolescent psychologist records with the nearest ZIP codes

  1. Martha Bestebreurtje, PH.D.Cambridge, MA 021391134272248
  2. Mary Calabrese, PH.D.Cambridge, MA 021391114084035
  3. Elizabeth CollierCambridge, MA 021391376247783
  4. Spencer Evans, PH.D.Cambridge, MA 021391093227928
  5. Suzanne Freedberg, PH.D.Cambridge, MA 021391821952052
  6. Laura Gaugh, (PSYD)Cambridge, MA 021391780759613
  7. Treniece HarrisCambridge, MA 021391477610038
  8. Carolynn Maltas, PH.D.Cambridge, MA 021391740332881

Common questions

What is Paul John Callahan, PSY.D.'s NPI number?

Paul John Callahan, PSY.D.'s National Provider Identifier (NPI) is 1114062239, issued on Feb 20, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Paul John Callahan, PSY.D. located?

The NPPES record lists a practice address at 2557 Massachusetts Ave, Cambridge, MA, 02140. Phone: (781) 643-1020. Providers update this record themselves, so call before visiting.

How can I verify Paul John Callahan, PSY.D.'s license?

NPPES lists Massachusetts license number 6376, 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), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.