Doctor profile · Federal record
Dr. Johnasan Gregory, M.D.
Gastroenterology Physician (CMS: Internal Medicine) · Specialist · Sherman, TX
- NPI 1699774869
- Accepts Medicare
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
300 N Highland Ave Ste 340
Sherman, TX 750927392
(903) 957-0233
fax (903) 957-0263
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- April 16, 2012
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Texas #G8150
- Medicaid
- TX #126499603
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699774869. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
109
Distinct HCPCS
2
Medicare allowed
$11,405
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 57 | 44 | $121 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 52 | 36 | $87 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 80. This provider delivers 1.4× the peer median.Open Payments
Industry payments received
All-time total
$167
Transactions
7
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Regeneron Healthcare Solutions, Inc. | 2 | $53.19 | |
| Janssen Biotech, Inc. | 1 | $46.32 | |
| Boston Scientific Corporation | 1 | $24.93 | |
| VIVUS LLC | 1 | $15.51 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $13.94 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 1 | $13.36 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
529
Patients
62
Total drug cost
$4,308
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 88 | 23 | $828 |
| Meloxicam | Generic | 68 | 14 | $206 |
| Metformin Hcl | Generic | 54 | 0 | $265 |
| Levothyroxine Sodium | Generic | 51 | 11 | $390 |
| Atorvastatin Calcium | Generic | 42 | 14 | $336 |
| Gabapentin | Generic | 32 | 0 | $681 |
| Alendronate Sodium | Generic | 27 | 0 | $135 |
| Lisinopril | Generic | 24 | 0 | $182 |
| Trazodone Hcl | Generic | 24 | 0 | $138 |
| Hydrochlorothiazide | Generic | 22 | 0 | $79 |
Frequently asked questions
What is Dr. Johnasan Gregory's medical specialty?
Dr. Johnasan Gregory practices Gastroenterology Physician in Sherman, TX.
Where does Dr. Johnasan Gregory practice?
Dr. Johnasan Gregory practices at 300 N Highland Ave Ste 340, Sherman, TX 750927392. Office phone: 9039570233.
What is Dr. Johnasan Gregory's NPI?
Dr. Johnasan Gregory's National Provider Identifier (NPI) is 1699774869, issued by NPPES.
Does Dr. Johnasan Gregory accept Medicare assignment?
Yes. Dr. Johnasan Gregory accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Johnasan Gregory commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.