DAVID R GREATOREX (M.D.) – Diagnostic Radiology Physician, NPI 1164409264
Diagnostic Radiology Physician
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Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for DAVID R GREATOREX (M.D.)
Lewiston Post Office, 49, Ash Street, Lewiston, Androscoggin County, Maine, 04240, United States
LEWISTON, ME 042411849
Phone: (207) 784-2554
Fax: (207) 777-5363
Type: Mailing
Mercy Hospital, 144, State Street, Old Port, Portland, Cumberland County, Maine, 04102, United States
PORTLAND, ME 041013776
Phone: (207) 879-3000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
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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: 2012-04-05
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 |
|---|---|---|---|---|
| I20120405000704 | I | Diagnostic Radiology | NH | 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 |
|---|---|---|---|---|
| 77063 | Screening 3d breast mammography | 438 | 438 | $0 |
| 77067 | Screening mammography | 438 | 438 | $0 |
| G0279 | Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 143 | 139 | $0 |
| 76642 | Limited ultrasound scan of 1 breast | 114 | 111 | $0 |
| 77065 | Diagnostic mammography of 1 breast | 106 | 100 | $0 |
Insurance plans in this area (ZIP 04241)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| DIAGNOSTIC RADIOLOGY | ME | 71010 | X-ray of chest, 1 view, front | 509 | 437 |
| DIAGNOSTIC RADIOLOGY | ME | 73110 | X-ray of wrist, minimum of 3 views | 23 | 22 |
| DIAGNOSTIC RADIOLOGY | ME | 73562 | X-ray of knee, 3 views | 41 | 33 |
| DIAGNOSTIC RADIOLOGY | ME | 73630 | X-ray of foot, minimum of 3 views | 59 | 51 |
| DIAGNOSTIC RADIOLOGY | ME | 74177 | CT scan of abdomen and pelvis with contrast | 189 | 183 |
| DIAGNOSTIC RADIOLOGY | ME | 76830 | Ultrasound pelvis through vagina | 27 | 26 |
| DIAGNOSTIC RADIOLOGY | ME | 78815 | Nuclear medicine study with CT imaging skull base to mid-thigh | 29 | 28 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology | NH | |
| Diagnostic Radiology | MI | |
| Diagnostic Radiology | NH |
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