NEIL ROBERT GREENSPAN (M.D.) – Gastroenterology Physician, NPI 1023007556
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
129 GASTROENTEROLOGY in RI
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Provider Addresses for NEIL ROBERT GREENSPAN (M.D.)
44, West River Street, Providence, Providence County, Rhode Island, 02904, United States
PROVIDENCE, RI 029042609
Phone: (401) 274-4800
Fax: (401) 454-0410
Type: Mailing
PO BOX 202230
DALLAS, TX 753202230
Phone: (401) 274-4800
Fax: (401) 454-0410
Type: Mailing
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: 2010-11-10
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 |
|---|---|---|---|---|
| I20101110001292 | I | Gastroenterology | RI | 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 |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 348 | 138 | $0 |
| G0500 | Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 108 | 106 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 101 | 101 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 65 | 63 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 57 | 56 | $0 |
Insurance plans in this area (ZIP 02904)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | RI | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 15 | 15 |
| GASTROENTEROLOGY | RI | 45378 | Diagnostic examination of large bowel using an endoscope | 18 | 18 |
| GASTROENTEROLOGY | RI | 45385 | Removal of polyps or growths of large bowel using an endoscope | 174 | 174 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Gastroenterology, Internal Medicine | RI | |
| G A S T R O E N T E R O L O G Y | RI | |
| Nurse Practitioner | RI | |
| G A S T R O E N T E R O L O G Y | RI | |
| Certified Registered Nurse Anesthetist (Crna) | RI | |
| Certified Registered Nurse Anesthetist (Crna) | RI | |
| Certified Registered Nurse Anesthetist (Crna) | RI | |
| Physician Assistant | RI | |
| Physician Assistant | CA | |
| G A S T R O E N T E R O L O G Y | NH |
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