Doctor profile · Federal record
Dr. John Tzagournis, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Columbus, OH
- NPI 1508818998
- Accepts Medicare
- 27 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
700 E Broad St, 2Nd Floor
Columbus, OH 432153946
(614) 458-1183
fax (614) 458-1184 - Additional location
-
111 S Grant Ave
Columbus, OH 432154701
(614) 566-9550 - Mailing address
-
700 Ackerman RD, Suite 385
Columbus, OH 432021559
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- June 12, 2025
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Ohio #35078868
- Medicaid
- OH #2347375
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1508818998. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
751
Distinct HCPCS
10
Medicare allowed
$72,692
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
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 | 165 | 147 | $5 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 103 | 56 | $76 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 90 | 81 | $100 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 87 | 87 | $166 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 69 | 67 | $108 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 56 | 54 | $243 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 39 | 29 | $122 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 36 | 26 | $86 | |
99153 |
Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes | 30 | 30 | $10 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 28 | 28 | $177 |
In context: peer comparison
Among 35 peers in Columbus Gastroenterology Physician, average services per provider: 35. This provider delivers 21× the peer median.Open Payments
Industry payments received
All-time total
$153
Transactions
7
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 2 | $44.65 | |
| Pfizer INC. | 2 | $43.44 | |
| Genzyme Corporation | 1 | $28.22 | |
| Takeda Pharmaceuticals U.S.A., INC. | 1 | $20.44 | |
| Ironwood Pharmaceuticals, INC | 1 | $15.89 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
583
Patients
243
Total drug cost
$54,511
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 244 | 82 | $2,913 |
| Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) | Brand | 92 | 91 | $2,217 |
| Mesalamine | Generic | 54 | 0 | $20,084 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 53 | 51 | $4,084 |
| Omeprazole | Generic | 35 | 0 | $476 |
| Sucralfate | Generic | 29 | 0 | $2,152 |
| Plenvu (Peg3350/Sod Sul/Nacl/Kcl/Asb/C) | Brand | 20 | 19 | $2,867 |
| Dicyclomine Hcl | Generic | 16 | 0 | $543 |
| Linzess (Linaclotide) | Brand | 14 | 0 | $16,096 |
| Balsalazide Disodium | Generic | 13 | 0 | $2,984 |
Hospital affiliations
Frequently asked questions
What is Dr. John Tzagournis's medical specialty?
Dr. John Tzagournis practices Gastroenterology Physician in Columbus, OH.
Where does Dr. John Tzagournis practice?
Dr. John Tzagournis practices at 700 E Broad St, Columbus, OH 432153946. Office phone: 6144581183.
What is Dr. John Tzagournis's NPI?
Dr. John Tzagournis's National Provider Identifier (NPI) is 1508818998, issued by NPPES.
Does Dr. John Tzagournis accept Medicare assignment?
Yes. Dr. John Tzagournis accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Tzagournis commonly perform?
Top Medicare-reported procedures in 2023: 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); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.