David Stewart Zimmerman, M.D.
NPI 1346772050ActiveIndividual· Internal Medicine· Huntsville, AR
Internal Medicine (M.D.) in Huntsville, Arkansas, trained at University of Arkansas College of Medicine (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $676,151 for 9,106 claims, against $1,734 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 11 companies reporting payments in 2025, $358.66 in all, mostly food and beverage.
Overview
| NPI | 1346772050 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 31, 2017 |
| Last updated in NPPES | Nov 7, 2025 |
| Certified by provider | Nov 7, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | E-12665 | AR |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 (AR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 53 |
|---|---|
| Services billed | 124 across 30 procedure codes |
| Paid by Medicare | $1,734 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,106 · 16,870 30-day fills |
|---|---|
| Patients | 464 |
| Total drug cost | $676,151 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Arkansas College of Medicine |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Internal Medicine |
Medical groups
- Boston Mountain Rural Health Center, IncHarrison, AR · 58 clinicians
- Ozark Physical Therapy Inc.Berryville, AR · 46 clinicians
Hospital affiliations
- Mercy Hospital BerryvilleBerryville, AR
- Washington Regional Medical CenterFayetteville, AR
Industry payments (Open Payments)
- 2025$358.66 · 19 payments from 11 companies
- 2024$89.26 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $92.84 | 5 |
| Alkermes, Inc. | $58.54 | 3 |
| Abbott Laboratories | $45.32 | 2 |
| Vanda Pharmaceuticals Inc. | $43.40 | 2 |
| Gilead Sciences, Inc. | $21.09 | 1 |
What the 2025 payments were for
- Food and Beverage$358.66 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records