Doctor profile · Federal record
Dr. Neil Greenspan, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Providence, RI
- NPI 1023007556
- Accepts Medicare
- MIPS 76.8 / 100 · 2023
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
44 W River St
Providence, RI 029042609
(401) 274-4800
fax (401) 454-0410 - Mailing address
-
Po Box 202230
Dallas, TX 753202230
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- October 15, 2025
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Rhode Island #07758
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1023007556. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
847
Distinct HCPCS
10
Medicare allowed
$74,445
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 348 | 138 | $36 | |
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 | $5 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 101 | 101 | $250 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 65 | 63 | $130 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 57 | 56 | $88 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 43 | 43 | $169 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 35 | 32 | $91 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 27 | 26 | $154 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 21 | 21 | $90 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 15 | 15 | $132 |
In context: peer comparison
Among 17 peers in Providence Gastroenterology Physician, average services per provider: 378. This provider delivers 2.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
827
Patients
468
Total drug cost
$77,236
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 333 | 321 | $7,351 |
| Omeprazole | Generic | 210 | 68 | $3,074 |
| Famotidine | Generic | 98 | 33 | $1,911 |
| Pantoprazole Sodium | Generic | 63 | 19 | $1,245 |
| Balsalazide Disodium | Generic | 28 | 0 | $7,222 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 28 | 27 | $2,165 |
| Mesalamine ER (Mesalamine) | Brand | 17 | 0 | $5,677 |
| Flovent Hfa (Fluticasone Propionate) | Brand | 13 | 0 | $6,042 |
| Mesalamine | Generic | 13 | 0 | $16,643 |
| Zenpep (Lipase/Protease/Amylase) | Brand | 13 | 0 | $23,844 |
Hospital affiliations
Frequently asked questions
What is Dr. Neil Greenspan's medical specialty?
Dr. Neil Greenspan practices Gastroenterology Physician in Providence, RI.
Where does Dr. Neil Greenspan practice?
Dr. Neil Greenspan practices at 44 W River St, Providence, RI 029042609. Office phone: 4012744800.
What is Dr. Neil Greenspan's NPI?
Dr. Neil Greenspan's National Provider Identifier (NPI) is 1023007556, issued by NPPES.
Does Dr. Neil Greenspan accept Medicare assignment?
Yes. Dr. Neil Greenspan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Neil Greenspan commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); 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 (HCPCS G0500); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.