Gregory Harrington, M.D.
NPI 1275591679 · Diagnostic Radiology Physician · Cambridge, MA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Harrington, M.D. is a Diagnostic Radiology Physician provider in Cambridge, MA (NPI 1275591679).
Provider details
- NPI number
- 1275591679
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 71703 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,431 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 242 | $9 |
| X-Ray of Chest, 2 Views71046 | 131 | $11 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 114 | $10 |
| Ct Scan Head Or Brain Without Contrast70450 | 111 | $41 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 64 | $92 |
| X-Ray of Shoulder, Minimum of 2 Views73030 | 47 | $10 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-03
- Last updated
- 2012-02-09
Frequently asked questions
- What is Gregory Harrington's NPI number?
- Gregory Harrington's National Provider Identifier (NPI) is 1275591679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Harrington's specialty?
- Gregory Harrington is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Harrington located?
- Gregory Harrington's practice location on file with NPPES is 1493 Cambridge Street, Cambridge, MA 02139.
- What is Gregory Harrington's phone number?
- The practice phone number listed in the NPPES registry for Gregory Harrington is (617) 665-1599.
- Does Gregory Harrington accept Medicare?
- Gregory Harrington is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Harrington's NPI active?
- Yes — Gregory Harrington's NPI (1275591679) is active in the NPPES registry as of the last update on 2012-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.