Active NPI
John Paul Tzagournis, M.D.
- Gastroenterology Physician
- Columbus, OH
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Gastroenterology Physician
- License
- 35078868
- Practice address
- 700 E Broad St
2ND Floor
Columbus, OH 43215-3946 - Phone
- (614) 458-1183
- Fax
- (614) 458-1184
- NPI assigned
- May 16, 2006
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Gastroenterology Physician | 207RG0100X | 35078868 | OH | Primary |
Addresses
Primary practice location
700 E Broad St
2ND Floor
Columbus, OH 43215-3946
Mailing address
700 Ackerman Rd
Suite 385
Columbus, OH 43202-1559
Phone (614) 947-3700
Other practice location 1
111 S Grant Ave
Columbus, OH 43215-4701
Phone (614) 566-9550
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2347375 | Medicaid | OH |
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | jtzagournis21372@direct.ohiohealth.com | OhioHealth Physician Group, Inc. |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in OH
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Gastroenterology
- Education
- Ohio State University College of Medicine, 1999
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
111 S Grant Ave
Columbus, OH 43215-4701
111 S Grant Ave 3Rd FL
Columbus, OH 43215-4701
Phone (614) 566-9184
393 E Town St
Columbus, OH 43215-4799
5300 N Meadows Dr
Grove City, OH 43123-2546
Phone (614) 663-3877
700 E Broad St
Columbus, OH 43215-3946
Phone (614) 458-1183
Hospital & facility affiliations
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Colonoscopy | 141 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 84 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Mount Carmel Healthproviders Two LLC | Current | Accepting new patients | |
| Digestive Associates of Ohio | Gastroenterology | Current | Accepting new patients |
| Ohiohealth Corporation | Gastroenterology | Current | Accepting new patients |
| Mount Carmel Healthproviders Two LLC | Current | Accepting new patients | |
| Ohiohealth Corporation | Current | Accepting new patients | |
| Lima Memorial Joint Operating Company | Past | Accepting new patients | |
| Westerville Endoscopy Center LLC | Past | Accepting new patients |
Locations
6001 E Broad St
Columbus, OH 43213
Phone (614) 224-6420
700 E Broad St
Fl 2
Columbus, OH 43215
Phone (614) 577-1077
393 E Town St
Ste 116
Columbus, OH 43215
Phone (614) 566-9108
L3339
Columbus, OH 43260
111 S Grant Ave
Columbus, OH 43215
Phone (614) 461-3232
6150 E Broad St
Columbus, OH 43213
Phone (614) 546-4400
Dept L3652
Columbus, OH 43260
5300 N Meadows Dr
Grove City, OH 43123
Phone (614) 234-4242
500 London Ave
Marysville, OH 43040
Phone (740) 420-8451
300 Polaris Pkwy
Ste 1500
Westerville, OH 43082
Phone (614) 568-1666
Organizations & group practices 7
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Gastroenterology Physician
- Columbus, OH
- NPI 1528383346
-
- Cardiovascular Disease Physician
- Columbus, OH
- NPI 1134154750
-
- Surgery Physician
- Columbus, OH
- NPI 1528203981
-
- Anesthesiology Physician
- Columbus, OH
- NPI 1407292105
-
- General Acute Care Hospital
- Lima, OH
- NPI 1336144732
-
- Endoscopy Clinic/Center
- Westerville, OH
- NPI 1881035509
Hospital & facility affiliations 5
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Grove City, OH
- NPI 1710067376
-
- General Acute Care Hospital
- Columbus, OH
- NPI 1982784534
-
- General Acute Care Hospital
- Columbus, OH
- NPI 1255377149
-
- General Acute Care Hospital
- Columbus, OH
- NPI 1467484972
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1147737600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1749686400000",
"number": "1508818998",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "700 ACKERMAN RD",
"address_2": "SUITE 385",
"city": "COLUMBUS",
"state": "OH",
"postal_code": "432021559",
"telephone_number": "614-947-3700",
"fax_number": "614-947-3771"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "700 E BROAD ST",
"address_2": "2ND FLOOR",
"city": "COLUMBUS",
"state": "OH",
"postal_code": "432153946",
"telephone_number": "614-458-1183",
"fax_number": "614-458-1184"
}
],
"practiceLocations": [
{
"address_1": "111 S Grant Ave",
"address_purpose": "LOCATION",
"city": "Columbus",
"state": "OH",
"postal_code": "432154701",
"country_code": "US",
"telephone_number": "614-566-9550",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "TZAGOURNIS",
"first_name": "JOHN",
"middle_name": "PAUL",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2006-05-16",
"last_updated": "2025-06-12",
"certification_date": "2025-06-12",
"status": "A"
},
"taxonomies": [
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "OH",
"license": "35078868",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "2347375",
"state": "OH"
}
],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "jtzagournis21372@direct.ohiohealth.com",
"affiliation": "Y",
"affiliationName": "OhioHealth Physician Group, Inc.",
"address_1": "111 S Grant Ave",
"city": "Columbus",
"state": "OH",
"country_code": "US",
"postal_code": "432154701",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}
Other providers in Columbus, OH
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 12, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.