JOHNASAN M GREGORY (M.D.) – Gastroenterology Physician, NPI 1699774869
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,290 INTERNAL MEDICINE in TX
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Provider Addresses for JOHNASAN M GREGORY (M.D.)
340, North Highland Avenue, Sherman, Grayson County, Texas, 75092, United States
SHERMAN, TX 750927392
Phone: (903) 957-0233
Fax: (903) 957-0263
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 8 Open Payments records for all available years, with a total value of $184.
Total Amount is formed as General ($184) + Research ($0) + Ownership ($0) = $184.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: Regeneron Healthcare Solutions, Inc. ($53).
Total Amount
$184
General + Research + Ownership
Payments
8
Total payment records
General Amount
$184
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Regeneron Healthcare Solutions, Inc. | $53 |
| Janssen Biotech, Inc. | $46 |
| Boston Scientific Corporation | $25 |
| PFIZER INC. | $17 |
| VIVUS LLC | $16 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2024-01-05
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20060202000660 | I | Gastroenterology | TX | TBD |
| I20240105003185 | I | Internal Medicine | AR | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 57 | 44 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 52 | 36 | $0 |
Insurance plans in this area (ZIP 75092)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | TX | 45378 | Diagnostic examination of large bowel using an endoscope | 18 | 18 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | AR | |
| General Surgery | AR | |
| - | AR | |
| Nurse Practitioner | AR | |
| Orthopedic Surgery | AR | |
| Hand Surgery, Orthopedic Surgery | AR | |
| Family Practice | AR | |
| Family Practice | AR | |
| Nurse Practitioner | AR | |
| Orthopedic Surgery | AR |
Reviews
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