John Spencer Mays, MD
NPI 1083108062ActiveIndividual· General Practice· Saint Louis, MO
General Practice (MD) in Saint Louis, Missouri, trained at University of Tennessee, Hsc, College of Medicine (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $1,190,322 for 14,827 claims, against $111,502 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 11 companies reporting payments in 2025, $234.66 in all, mostly food and beverage.
Overview
| NPI | 1083108062 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 21, 2018 |
| Last updated in NPPES | Sep 1, 2026 |
| Certified by provider | Mar 22, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | 2020001817 | MO |
| Internal Medicine | 207R00000X | 2020001817 | MO |
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 - Internal Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 481 |
|---|---|
| Services billed | 1,664 across 32 procedure codes |
| Paid by Medicare | $111,502 |
Part D prescriptions in 2024
| Prescriptions (claims) | 14,827 · 35,119 30-day fills |
|---|---|
| Patients | 1,354 |
| Total drug cost | $1,190,322 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Tennessee, Hsc, College of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Physician Groups LcFarmington, MO · 521 clinicians
- Physical Therapy Spine and Sports Medicine LLCBallwin, MO · 129 clinicians
- Elite Physical Therapy of Creve Coeur LLCCreve Coeur, MO · 91 clinicians
- Arnold Physical Therapy and Sports Medicine LLCSaint Louis, MO · 83 clinicians
Hospital affiliations
- Alton Memorial HospitalAlton, IL
- Barnes Jewish HospitalSaint Louis, MO
- Barnes-Jewish West County HospitalCreve Coeur, MO
- Christian Hospital NortheastSaint Louis, MO
- Missouri Baptist Medical CenterSaint Louis, MO
Other facilities
- Amedisys Home Health of MissouriHome health agency · Hillsboro, MO
- Bjc Home Care ServicesHome health agency · Saint Louis, MO
- Ssm Health Rehabilitation HospitalInpatient rehabilitation facility · Richmond Heights, MO
- McKnight Place Extended CareNursing home · Saint Louis, MO
Industry payments (Open Payments)
- 2025$234.66 · 13 payments from 11 companies
- 2024$1,491 · 83 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $44.90 | 2 |
| Glaxosmithkline, LLC. | $28.72 | 2 |
| Lilly USA, LLC | $21.98 | 1 |
| Medtronic, Inc. | $21.56 | 1 |
| Esperion Therapeutics, Inc. | $19.35 | 1 |
What the 2025 payments were for
- Food and Beverage$234.66 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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