Doctor profile · Federal record
Dr. Michael Grupka, MD
Gastroenterology Physician (CMS: Gastroenterology) · Hiram, GA
- NPI 1497953467
- Accepts Medicare
- MIPS 90.2 / 100 · 2023
- 24 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
148 Bill Carruth Pkwy Ste 200
Hiram, GA 30141
(678) 741-5000
fax (770) 445-9013 - Mailing address
-
711 Canton RD Ne Ste 300
Marietta, GA 300608949
Credentials & registration
- NPI registered
- July 2007 — 19 yrs on file
- Profile last updated
- May 31, 2018
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Georgia #060588
- Medicaid
- GA #483829670C
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1497953467. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
489
Distinct HCPCS
10
Medicare allowed
$66,952
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 85 | 74 | $89 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 62 | 62 | $253 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 52 | 52 | $94 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 46 | 46 | $167 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 45 | 34 | $79 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 44 | 44 | $174 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 43 | 39 | $127 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 21 | 21 | $110 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 20 | 20 | $184 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 19 | 19 | $175 |
In context: peer comparison
Among 2 peers in Hiram Gastroenterology Physician, average services per provider: 43. This provider delivers 11× the peer median.Open Payments
Industry payments received
All-time total
$186
Transactions
9
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 2 | $41.90 | |
| Janssen Biotech, INC. | 2 | $39.38 | |
| Ferring Pharmaceuticals INC. | 1 | $30.26 | |
| Ardelyx, INC. | 1 | $21.93 | |
| Medtronic, INC. | 1 | $20.34 | |
| Takeda Pharmaceuticals U.S.A., INC. | 1 | $16.72 | |
| Ipsen Biopharmaceuticals, INC | 1 | $15.12 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
788
Patients
236
Total drug cost
$304,947
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 284 | 102 | $4,580 |
| Famotidine | Generic | 87 | 28 | $871 |
| Omeprazole | Generic | 76 | 32 | $1,085 |
| Sucralfate | Generic | 65 | 18 | $4,127 |
| Dicyclomine Hcl | Generic | 60 | 23 | $1,720 |
| Linzess (Linaclotide) | Brand | 51 | 22 | $67,058 |
| Colestipol Hcl | Generic | 30 | 11 | $4,181 |
| Spironolactone | Generic | 28 | 0 | $487 |
| Mesalamine | Generic | 18 | 0 | $11,172 |
| Ondansetron Hcl | Generic | 18 | 0 | $407 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Grupka's medical specialty?
Dr. Michael Grupka practices Gastroenterology Physician in Hiram, GA.
Where does Dr. Michael Grupka practice?
Dr. Michael Grupka practices at 148 Bill Carruth Pkwy Ste 200, Hiram, GA 30141. Office phone: 6787415000.
What is Dr. Michael Grupka's NPI?
Dr. Michael Grupka's National Provider Identifier (NPI) is 1497953467, issued by NPPES.
Does Dr. Michael Grupka accept Medicare assignment?
Yes. Dr. Michael Grupka accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Grupka commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.