John William Allen Jr., MD
NPI 1801868666ActiveIndividual· Internal Medicine· Olive Branch, MS
Internal Medicine (MD) in Olive Branch, Mississippi, trained at University of Mississippi School of Medicine (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $1,113,802 for 15,007 claims, against $120,184 paid for services in 2024. Novo Nordisk Inc was the largest of 4 companies reporting payments in 2025, $87.62 in all, mostly food and beverage.
Overview
| NPI | 1801868666 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 6, 2006 |
| Last updated in NPPES | Feb 2, 2024 |
| Certified by provider | Feb 2, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 17289 | MS |
| Hospitalist | 208M00000X | 17289 | MS |
| Hospitalist | 208M00000X | 50030 | TN |
| Internal Medicine | 207R00000X | 50030 | TN |
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); Practitioner - Hospitalist (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 555 |
|---|---|
| Services billed | 2,134 across 60 procedure codes |
| Paid by Medicare | $120,184 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15,007 · 31,477 30-day fills |
|---|---|
| Patients | 785 |
| Total drug cost | $1,113,802 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Mississippi School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hospitalist |
| Telehealth | Offers telehealth |
Medical groups
- Methodist Inpatient Physicians LLCGermantown, TN · 128 clinicians
- Primary Care Group, LLCMemphis, TN · 112 clinicians
Hospital affiliations
- Baptist Memorial HospitalMemphis, TN
- Baptist Memorial Hospital DesotoSouthaven, MS
- Methodist Healthcare - Olive Branch HospitalOlive Branch, MS
- Methodist Hospitals of MemphisMemphis, TN
Other facilities
- Accentcare Home Health of GreenwoodHome health agency · Greenwood, MS
- Baptist Home Care and Hospice North MississippiHome health agency · Batesville, MS
- Centerwell Home HealthHome health agency · Tupelo, MS
- Homechoice Health Services - HernandoHome health agency · Hernando, MS
Industry payments (Open Payments)
- 2025$87.62 · 5 payments from 4 companies
- 2024$56.26 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $33.25 | 2 |
| Dexcom, Inc. | $21.54 | 1 |
| Pfizer Inc. | $18.69 | 1 |
| Astrazeneca Pharmaceuticals LP | $14.14 | 1 |
What the 2025 payments were for
- Food and Beverage$87.62 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Olive Branch
- 1821038407
- 1932424595
- 1518127620
- 1518529114
- 1215347349
- 1891126330