Theodore Jacob Ellenhorn, PHD
Clinical Psychologist · Amherst, MA
Theodore Jacob Ellenhorn, PHD is a clinical psychologist with a practice address in Amherst, Massachusetts, and NPI 1609911544, issued on Feb 20, 2007. Check the license (Massachusetts 5069, 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
- Theodore Jacob Ellenhorn
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 5069 MA
Self-reported in NPPES; status is on the state search - Practice location
- 17 Kellogg Ave, Amherst, MA 01002
- Phone
- (413) 256-3075
- Enumerated
- Feb 20, 2007
- Record last updated
- Feb 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050527000306); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 3,185 in Massachusetts → Look up another NPI →
Also registered at 17 Kellogg Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Fine, PSYDClinical Psychologist1902346448
Verify Theodore Jacob Ellenhorn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 5069Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Theodore Jacob Ellenhorn among 3,185 clinical psychologist records in Massachusetts
Theodore Jacob Ellenhorn, PHD is one of 3,185 clinical psychologist records with a practice address in Massachusetts. 12% 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 30% of them.
- NPI issued2007 · 30% of these records are older, 50% newer
- In a Medicare fileNo · 12% of these records are
- In the CMS Doctors and Clinicians fileYes · 24% of these records are
- Graduated1989 · median 2000 among the 777 with a school on file
- Record last updated2020 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
51 clinical psychologist records list a practice address in Amherst
They are 51 of the 769 NPPES records with a practice address in Amherst, and 3,185 clinical psychologist records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,185 in Massachusetts → Every provider in Amherst → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Rachel Aizen, PHDAmherst, MA 010021659458081
- Joel Feinman, PH.D.Amherst, MA 010021073583605
- Gordon Grant, PSY.DAmherst, MA 010021316047244
- Richard Halgin, PH.D.Amherst, MA 010021275578585
- Elizabeth Hemley, DRSAmherst, MA 010021700992104
- Amy Hirsch, PH.D.Amherst, MA 010021821185885
- Roger Jones, PHDAmherst, MA 010021720189145
- Kristine Mamchur, PSY.D.Amherst, MA 010021437186426
Common questions
What is Theodore Jacob Ellenhorn, PHD's NPI number?
Theodore Jacob Ellenhorn, PHD's National Provider Identifier (NPI) is 1609911544, issued on Feb 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Theodore Jacob Ellenhorn, PHD located?
The NPPES record lists a practice address at 17 Kellogg Ave, Amherst, MA, 01002. Phone: (413) 256-3075. Providers update this record themselves, so call before visiting.
How can I verify Theodore Jacob Ellenhorn, PHD's license?
NPPES lists Massachusetts license number 5069, 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.