John Whitman Prenshaw, M.D.
NPI 1164869475ActiveIndividual· Ophthalmology· Chattanooga, TN
Ophthalmology (M.D.) in Chattanooga, Tennessee, trained at University of Tennessee, Hsc, College of Medicine (class of 2013). In 2024 Medicare paid $252,293 for 487 patients, and Part D covered 293 of their prescriptions, 58% of them generic. Abbvie Inc. was the largest of 7 companies reporting payments in 2025, $576.98 in all, mostly food and beverage.
Overview
| NPI | 1164869475 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 28, 2013 |
| Last updated in NPPES | Jan 18, 2024 |
| Certified by provider | Jan 18, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 65541 | TN |
| Ophthalmology | 207W00000X | 2017-00665 | NC |
| Ophthalmology | 207W00000X | 94783 | GA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Ophthalmology (GA); Practitioner - Ophthalmology (NC); Practitioner - Ophthalmology (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 487 |
|---|---|
| Services billed | 1,641 across 32 procedure codes |
| Paid by Medicare | $252,293 |
Part D prescriptions in 2024
| Prescriptions (claims) | 293 · 409 30-day fills |
|---|---|
| Patients | 134 |
| Total drug cost | $34,185 |
| Generic share | 58% of claims |
Education and affiliations
| Medical school | University of Tennessee, Hsc, College of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Ophthalmology |
Medical group
- Jonathan Woolfson MD PCCumming, GA · 28 clinicians
Hospital affiliations
- Adventhealth MurrayChatsworth, GA
- Fort Loudoun Medical CenterLenoir City, TN
Industry payments (Open Payments)
- 2025$576.98 · 21 payments from 7 companies
- 2024$685.93 · 19 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $422.39 | 14 |
| Glaukos Corporation | $36.02 | 1 |
| Dompe US, Inc. | $34.72 | 2 |
| Alcon Vision LLC | $23.78 | 1 |
| Sight Sciences, Inc. | $21.13 | 1 |
What the 2025 payments were for
- Food and Beverage$576.98 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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