Andrew Hahn, PSY.D
Psychologist · Waltham, MA
Andrew Hahn, PSY.D is a psychologist with a practice address in Waltham, Massachusetts, and NPI 1679620389, issued on Jan 4, 2007. Check the license (Massachusetts PY4357-PR, 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.
- Name
- Andrew Hahn
- Credential
- PSY.D
- Primary taxonomy
- Psychologist 103T00000X
- License number
- PY4357-PR MA
Self-reported in NPPES; status is on the state search - Practice location
- 115 Worcester LN, Waltham, MA 02451
- Phone
- (781) 274-6633
- Enumerated
- Jan 4, 2007
- Record last updated
- Nov 21, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (781) 274-6644
- Medicare enrollment
- Enrolled (PECOS I20120525000060); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 2,367 in Massachusetts → Look up another NPI →
Verify Andrew Hahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PY4357-PRCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Andrew Hahn among 2,367 psychologist records in Massachusetts
Andrew Hahn, PSY.D is one of 2,367 psychologist records with a practice address in Massachusetts. 11% 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 29% of them.
- NPI issued2007 · 29% of these records are older, 54% newer
- In a Medicare fileNo · 11% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated1985 · median 1997 among the 487 with a school on file
- Record last updated2017 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 psychologist records list a practice address in Waltham
They are 27 of the 2,111 NPPES records with a practice address in Waltham, and 2,367 psychologist records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,367 in Massachusetts → Every provider in Waltham → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Carson Byrne, MAWaltham, MA 024511366960700
- Tara Cousineau, PH.D.Waltham, MA 024511346296381
- Benjamin Darnell, PHDWaltham, MA 024511780397273
- Elizabeth Freeman Young, EDDWaltham, MA 024511386712636
- Elizabeth PaltsevaWaltham, MA 024511164116513
- Andrew Dole, PSYDWaltham, MA 024521275038424
- Susannah Flaherty, PSY.D.Waltham, MA 024521336564806
- Brenda Hawks, PHDWaltham, MA 024521316080575
Common questions
What is Andrew Hahn, PSY.D's NPI number?
Andrew Hahn, PSY.D's National Provider Identifier (NPI) is 1679620389, issued on Jan 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Hahn, PSY.D located?
The NPPES record lists a practice address at 115 Worcester LN, Waltham, MA, 02451. Phone: (781) 274-6633. Providers update this record themselves, so call before visiting.
How can I verify Andrew Hahn, PSY.D's license?
NPPES lists Massachusetts license number PY4357-PR, 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.
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.