JOHN CHARLES HERVERT (DO) – Internal Medicine Physician, NPI 1235428921
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,476 INTERNAL MEDICINE in OK
Provider Addresses for JOHN CHARLES HERVERT (DO)
9645 RIVERSIDE PKWY STE C
TULSA, OK 741377427
Phone: (918) 209-5170
Fax: (918) 209-5187
Type: Mailing
1590 S SR 15A STE 100
DELAND, FL 327207817
Phone: (386) 774-0016
Fax: (386) 774-0606
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 199 Open Payments records for all available years, with a total value of $4,458.
Total Amount is formed as General ($4,458) + Research ($0) + Ownership ($0) = $4,458.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: ABBVIE INC. ($1,071).
Total Amount
$4,458
General + Research + Ownership
Payments
199
Total payment records
General Amount
$4,458
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $1,071 |
| Novo Nordisk Inc | $830 |
| AstraZeneca Pharmaceuticals LP | $489 |
| Amgen Inc. | $374 |
| Lilly USA, LLC | $199 |
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: 2021-11-16
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20211116001804 | I | Internal Medicine | FL | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 74137)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Sports Medicine | FL | |
| Physician Assistant | FL | |
| Physician Assistant | FL | |
| Nurse Practitioner | FL | |
| Physician Assistant | FL | |
| Family Practice | FL | |
| Family Practice | FL | |
| Nurse Practitioner | FL | |
| Family Practice | FL | |
| Nurse Practitioner | KY |
Reviews
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