Mary Katherine Johnson, M.D.
Obstetrics & Gynecology (M.D.) with Mid-South OB-GYN PLLC, practicing in Memphis, Tennessee. In 2024 Medicare paid $4,568 for 51 patients, and Part D covered 71 of their prescriptions, 87% of them generic. Biogen, Inc. was the largest of 15 companies reporting payments in 2025, $642.40 in all, mostly food and beverage. Lists Baptist Memorial Hospital and 2 other hospitals as hospital affiliations. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1720309750 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 14, 2010 |
| Last updated in NPPES | Oct 16, 2025 |
| Certified by provider | Oct 16, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 50895 | TN |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in Tennessee, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Mary Elizabeth Johnson · Employee | 1128a2 | Nov 25, 1990 | Jefferson City, TN |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 51 |
|---|---|
| Services billed | 120 across 14 procedure codes |
| Paid by Medicare | $4,568 |
Part D prescriptions in 2024
| Prescriptions (claims) | 71 · 130 30-day fills |
|---|---|
| Patients | 28 |
| Total drug cost | $5,801 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Mid-South OB-GYN PLLCMemphis, TN · 9 clinicians
Hospital affiliations
- Baptist Memorial HospitalMemphis, TN
- Baptist Memorial Hospital DesotoSouthaven, MS
- Methodist Hospitals of MemphisMemphis, TN
Industry payments (Open Payments)
- 2025$642.40 · 33 payments from 15 companies
- 2024$984.45 · 45 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biogen, Inc. | $72.62 | 3 |
| Hologic Sales and Service, LLC | $71.31 | 3 |
| Sumitomo Pharma America, Inc. | $66.16 | 3 |
| Exeltis, USA Inc. | $65.70 | 3 |
| Shield Therapeutics Inc | $65.44 | 4 |
What the 2025 payments were for
- Food and Beverage$642.40 · 33 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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