GREGORY PHILIP HARRINGTON (M.D.) – Diagnostic Radiology Physician, NPI 1275591679
Diagnostic Radiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,897 DIAGNOSTIC RADIOLOGY in MA
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Provider Addresses for GREGORY PHILIP HARRINGTON (M.D.)
Cambridge Hospital, 1493, Cambridge Street, Inman Square, Cambridge, Middlesex County, Massachusetts, 02139, United States
CAMBRIDGE, MA 021391047
Phone: (617) 665-1599
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
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Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2005-09-02
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20050902000058 | I | Diagnostic Radiology | MA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 71045 | X-ray of chest, 1 view | 278 | 225 | $0 |
| 77080 | Dxa bone density measurement of hip, pelvis, spine | 158 | 157 | $0 |
| 70450 | Ct scan head or brain without contrast | 117 | 115 | $0 |
| 71046 | X-ray of chest, 2 views | 103 | 99 | $0 |
| 77063 | Screening 3d breast mammography | 77 | 77 | $0 |
Insurance plans in this area (ZIP 02139)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | MA | |
| - | MA | |
| - | NH | |
| - | MA | |
| Family Practice | MA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MA | |
| Physician Assistant | MA | |
| Physician Assistant | MA | |
| - | MA | |
| U R O L O G Y | ME |
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