Michael Shawn Collier, MD
NPI 1811933674ActiveIndividual· Internal Medicine· Knoxville, TN
Internal Medicine (MD) in Knoxville, Tennessee, trained at University of Tennessee, Hsc, College of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $1,071,651 for 10,401 claims, against $264,581 paid for services in 2024. Pfizer Inc. was the largest of 29 companies reporting payments in 2025, $2,216 in all, mostly food and beverage.
Overview
| NPI | 1811933674 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 21, 2006 |
| Last updated in NPPES | Apr 30, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 32220 | TN |
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 (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 485 |
|---|---|
| Services billed | 44,695 across 104 procedure codes |
| Paid by Medicare | $264,581 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,401 · 26,983 30-day fills |
|---|---|
| Patients | 700 |
| Total drug cost | $1,071,651 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Tennessee, Hsc, College of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Internal Medicine |
Medical groups
- Physiotherapy Associates IncMemphis, TN · 1,460 clinicians
- Summit Medical Group, PLLCKnoxville, TN · 652 clinicians
- PT Pros, IncWilliamsburg, KY · 263 clinicians
Hospital affiliations
- Fort Loudoun Medical CenterLenoir City, TN
- Fort Sanders Regional Medical CenterKnoxville, TN
- Methodist Medical Center of Oak RidgeOak Ridge, TN
- Parkwest Medical CenterKnoxville, TN
- Physicians Regional Medical CenterPowell, TN
Other facilities
- Amedisys Home Health ChattanoogaHome health agency · Chattanooga, TN
- Home Care SolutionsHome health agency · Spring Hill, TN
Industry payments (Open Payments)
- 2025$2,216 · 149 payments from 29 companies
- 2024$2,493 · 188 payments from 28 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $360.67 | 28 |
| Abbvie Inc. | $354.52 | 31 |
| Novo Nordisk Inc | $242.26 | 18 |
| Lilly USA, LLC | $172.43 | 12 |
| Otsuka America Pharmaceutical, Inc. | $149.72 | 11 |
What the 2025 payments were for
- Food and Beverage$2,171 · 148 payments
- Education$45.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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