Quick answers
- Does Margaret M. Heffernan accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret M. Heffernan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Margaret M. Heffernan see?
- In 2024, CMS data shows 16 Original Medicare patients and 252 services for Margaret M. Heffernan. This counts Original Medicare only and measures volume, not quality.
- What is Margaret M. Heffernan's NPI number?
- 1114945482. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Margaret M. Heffernan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 16 |
|---|---|
| Services billed to Medicare | 252 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Administration of psychological or neuropsychological test, each additional 30 minutes (96137)140 services
- Evaluation of neuropsychological test, each additional hour (96133)64 services
- Psychiatric diagnostic evaluation (90791)16 services
- Evaluation of neuropsychological test, first hour (96132)16 services
- Administration of psychological or neuropsychological test, first 30 minutes (96136)16 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
Practice locations
Addresses where Margaret M. Heffernan is enrolled with Medicare (CMS data updated October 2, 2026).
- 388 County StNew Bedford, MA 02740 (774) 762‑0886
Specialties
- Clinical Psychologistprimary
Find other clinicians: Clinical Psychologist, Massachusetts →
Other clinical psychologists in New Bedford
Clinicians with the same Medicare primary specialty in New Bedford, MA — not a recommendation.
Clinician information
| School | Boston University School Of Medicine |
|---|---|
| Graduation year | 1993 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1114945482 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians