Doctor profile · Federal record
Dr. Michael Greenspan, MD
Gastroenterology Physician (CMS: Gastroenterology) · Elmhurst, IL
- NPI 1942520127
- Accepts Medicare
- MIPS 91.4 / 100 · 2023
- 16 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
133 E Brush Hill RD Ste 310
Elmhurst, IL 601265662
(331) 221-9003
fax (331) 221-2743 - Mailing address
-
4201 Winfield RD Fl 4
Warrenville, IL 605554025
Credentials & registration
- NPI registered
- June 2010 — 16 yrs on file
- Profile last updated
- May 26, 2021
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Illinois #036131144
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1942520127. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
584
Distinct HCPCS
10
Medicare allowed
$64,510
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J2704 |
Injection, propofol, 10 mg | 120 | 12 | $0 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 68 | 63 | $134 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 67 | 66 | $71 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 61 | 60 | $256 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 46 | 44 | $84 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 46 | 32 | $83 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 41 | 41 | $173 | |
43237 |
Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope through mouth | 35 | 34 | $156 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 26 | 26 | $137 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 19 | 19 | $119 |
In context: peer comparison
Among 9 peers in this city , average services per provider: 49. This provider delivers 12× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
499
Patients
241
Total drug cost
$61,298
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 131 | 128 | $2,238 |
| Pantoprazole Sodium | Generic | 86 | 35 | $1,343 |
| Omeprazole | Generic | 66 | 24 | $989 |
| Dicyclomine Hcl | Generic | 33 | 0 | $777 |
| Linzess (Linaclotide) | Brand | 32 | 0 | $18,096 |
| Famotidine | Generic | 24 | 0 | $194 |
| Mesalamine Er (Mesalamine) | Brand | 21 | 0 | $4,693 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 20 | 19 | $527 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 19 | 18 | $1,566 |
| Peg-3350 And Electrolytes (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 17 | 17 | $367 |
Frequently asked questions
What is Dr. Michael Greenspan's medical specialty?
Dr. Michael Greenspan practices Gastroenterology Physician in Elmhurst, IL.
Where does Dr. Michael Greenspan practice?
Dr. Michael Greenspan practices at 133 E Brush Hill RD Ste 310, Elmhurst, IL 601265662. Office phone: 3312219003.
What is Dr. Michael Greenspan's NPI?
Dr. Michael Greenspan's National Provider Identifier (NPI) is 1942520127, issued by NPPES.
Does Dr. Michael Greenspan accept Medicare assignment?
Yes. Dr. Michael Greenspan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Greenspan commonly perform?
Top Medicare-reported procedures in 2023: Injection, propofol, 10 mg (HCPCS J2704); Established patient office or other outpatient visit (HCPCS 99214); Biopsy of large bowel using a flexible endoscope (HCPCS 45380). Source: CMS Medicare Physician & Other Practitioners file.