Mark Adrain Kiefer, MD
NPI 1992896567ActiveIndividual· Colon & Rectal Surgery· Tulsa, OK
Colon & Rectal Surgery (MD) in Tulsa, Oklahoma, trained at University of Tennessee, Hsc, College of Medicine (class of 2003). 243 Medicare patients in 2024, $101,374 paid; nearly all of their 143 Part D prescriptions were generic (95%).
Overview
| NPI | 1992896567 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 27, 2006 |
| Last updated in NPPES | Oct 2, 2020 |
| Certified by provider | Oct 2, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Colon & Rectal Surgery Primary | 208C00000X | 27205 | OK |
| Surgery | 208600000X | 27205 | 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 - Colorectal Surgery (Proctology) (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 243 |
|---|---|
| Services billed | 640 across 67 procedure codes |
| Paid by Medicare | $101,374 |
Part D prescriptions in 2024
| Prescriptions (claims) | 143 · 145 30-day fills |
|---|---|
| Patients | 75 |
| Total drug cost | $1,786 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of Tennessee, Hsc, College of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Colorectal Surgery (Proctology) |
Medical group
- St. John Physicians, Inc.Tulsa, OK · 259 clinicians
Hospital affiliations
- Ascension St John Broken ArrowBroken Arrow, OK
- Ascension St John Medical CenterTulsa, OK
- St John OwassoOwasso, OK
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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