Doctor profile · Federal record
Dr. Karen Ma, MD, PHARMD
Gastroenterology Physician (CMS: Gastroenterology) · Elmhurst, IL
- NPI 1124464789
- Accepts Medicare
- MIPS 91.4 / 100 · 2023
- 13 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
155 E Brush Hill RD
Elmhurst, IL 601265658
(331) 221-9003
fax (331) 221-2743 - Mailing address
-
4201 Winfield RD
Warrenville, IL 605554025
Credentials & registration
- NPI registered
- May 2013 — 13 yrs on file
- Profile last updated
- January 13, 2022
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Illinois #036-139551
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1124464789. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
785
Distinct HCPCS
10
Medicare allowed
$118,225
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 248 | 226 | $182 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 247 | 149 | $125 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 63 | 62 | $121 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 53 | 52 | $110 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 36 | 35 | $177 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 31 | 29 | $177 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 27 | 26 | $83 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 18 | 18 | $268 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 17 | 17 | $102 | |
43255 |
Control of bleeding of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 16 | 16 | $211 |
In context: peer comparison
Among 9 peers in Elmhurst Gastroenterology Physician, average services per provider: 49. This provider delivers 16× the peer median.Open Payments
Industry payments received
All-time total
$266
Transactions
3
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, INC. | 3 | $265.94 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
27
Patients
12
Total drug cost
$395
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 15 | 0 | $121 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 12 | 12 | $273 |
Frequently asked questions
What is Dr. Karen Ma's medical specialty?
Dr. Karen Ma practices Gastroenterology Physician in Elmhurst, IL.
Where does Dr. Karen Ma practice?
Dr. Karen Ma practices at 155 E Brush Hill RD, Elmhurst, IL 601265658. Office phone: 3312219003.
What is Dr. Karen Ma's NPI?
Dr. Karen Ma's National Provider Identifier (NPI) is 1124464789, issued by NPPES.
Does Dr. Karen Ma accept Medicare assignment?
Yes. Dr. Karen Ma accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Ma commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.