Mary Camille Chelf
NPI 1821617077ActiveIndividual· Nurse Practitioner, Family· Tulsa, OK
Nurse Practitioner, Family with St. John Physicians, Inc. and 1 other group, practicing in Tulsa, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $234,954 for 783 claims, against $35,800 paid for services in 2024. Abbvie Inc. was the largest of 20 companies reporting payments in 2025, $2,644 in all, mostly food and beverage. Lists Ascension St John Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1821617077 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Apr 8, 2020 |
| Last updated in NPPES | Jul 25, 2022 |
| Certified by provider | Jul 25, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 123090 | OK |
| Registered Nurse | 163W00000X | 123090 | OK |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 434 |
|---|---|
| Services billed | 1,064 across 15 procedure codes |
| Paid by Medicare | $35,800 |
Part D prescriptions in 2024
| Prescriptions (claims) | 783 · 1,142 30-day fills |
|---|---|
| Patients | 399 |
| Total drug cost | $234,954 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- St. John Physicians, Inc.Tulsa, OK · 259 clinicians
- Gastroenterology Specialists, Inc.Tulsa, OK · 23 clinicians
Hospital affiliations
- Ascension St John Medical CenterTulsa, OK
- Saint Francis Hospital South, LLCTulsa, OK
- Saint Francis Hospital, IncTulsa, OK
Industry payments (Open Payments)
- 2025$2,644 · 141 payments from 20 companies
- 2024$2,605 · 137 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $694.81 | 47 |
| Janssen Biotech, Inc. | $352.70 | 19 |
| Takeda Pharmaceuticals U.S.A., Inc. | $293.50 | 13 |
| Madrigal Pharmaceuticals | $181.10 | 7 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $173.05 | 9 |
What the 2025 payments were for
- Food and Beverage$2,644 · 141 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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