Mary S. Missak, M.D.
NPI 1962507061ActiveIndividual· Internal Medicine· Southaven, MS
Internal Medicine (M.D.) with Baptist Memorial Hospital-Desoto, Inc. and 1 other group, practicing in Southaven, Mississippi. Their prescriptions cost Medicare Part D more than their services did: $527,986 for 7,426 claims, against $108,190 paid for services in 2024. Novo Nordisk Inc was the largest of 15 companies reporting payments in 2025, $908.27 in all, mostly food and beverage. Lists Baptist Memorial Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1962507061 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 13, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 16715 | MS |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| 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 - Internal Medicine (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,475 |
|---|---|
| Services billed | 4,713 across 24 procedure codes |
| Paid by Medicare | $108,190 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,426 · 16,476 30-day fills |
|---|---|
| Patients | 560 |
| Total drug cost | $527,986 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1979 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Baptist Memorial Hospital-Desoto, Inc.Southaven, MS · 10 clinicians
- Southaven Internal Medicine, P.C.Southaven, MS · 2 clinicians
Hospital affiliations
- Baptist Memorial HospitalMemphis, TN
- Baptist Memorial Hospital DesotoSouthaven, MS
- Baptist Memorial Hospital-Crittenden, IncWest Memphis, AR
- Methodist Healthcare - Olive Branch HospitalOlive Branch, MS
- Methodist Hospitals of MemphisMemphis, TN
Other facilities
- Baptist Home Care and Hospice North MississippiHome health agency · Batesville, MS
- Compassus-MemphisHospice · Southaven, MS
Industry payments (Open Payments)
- 2025$908.27 · 52 payments from 15 companies
- 2024$737.57 · 44 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $155.74 | 8 |
| Lilly USA, LLC | $145.03 | 10 |
| Bayer Healthcare Pharmaceuticals Inc. | $109.52 | 6 |
| Astellas Pharma US Inc | $105.39 | 6 |
| Abbvie Inc. | $72.40 | 3 |
What the 2025 payments were for
- Food and Beverage$908.27 · 52 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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