Doctor profile · Federal record
Dr. Allison Rzepczynski, MD
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Elmhurst, IL
- NPI 1649708975
- Accepts Medicare
- MIPS 91.4 / 100 · 2023
- 9 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1200 S York St Ste 2000
Elmhurst, IL 601265634
(331) 221-9003 - Additional location
-
1650 W Harrison St Ste 466
Chicago, IL 606123800
(312) 942-5000 - Mailing address
-
4201 Winfield RD Fl 3
Warrenville, IL 605554025
Credentials & registration
- NPI registered
- May 2017 — 9 yrs on file
- Profile last updated
- July 26, 2023
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Illinois #036152640 · Illinois #125070546
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1649708975. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
75
Distinct HCPCS
4
Medicare allowed
$11,005
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99204 |
New patient office or other outpatient visit, 45-59 minutes | 28 | 28 | $173 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 20 | 11 | $123 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 14 | 14 | $179 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 13 | 13 | $91 |
In context: peer comparison
Among 9 peers in Elmhurst Gastroenterology Physician, average services per provider: 49. This provider delivers 1.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
41
Patients
18
Total drug cost
$18,315
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 19 | 18 | $1,381 |
| Pantoprazole Sodium | Generic | 11 | 0 | $259 |
| Vemlidy (Tenofovir Alafenamide) | Brand | 11 | 0 | $16,675 |
Frequently asked questions
What is Dr. Allison Rzepczynski's medical specialty?
Dr. Allison Rzepczynski practices Gastroenterology Physician in Elmhurst, IL.
Where does Dr. Allison Rzepczynski practice?
Dr. Allison Rzepczynski practices at 1200 S York St Ste 2000, Elmhurst, IL 601265634. Office phone: 3312219003.
What is Dr. Allison Rzepczynski's NPI?
Dr. Allison Rzepczynski's National Provider Identifier (NPI) is 1649708975, issued by NPPES.
Does Dr. Allison Rzepczynski accept Medicare assignment?
Yes. Dr. Allison Rzepczynski accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Allison Rzepczynski commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99204); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.