Dennis Whittier Hartman, O.D.
NPI 1922078294ActiveIndividual· Optometrist· Merced, CA
Optometrist (O.D.) in Merced, California, trained at Pacific University - College of Optometry (class of 1989). In 2024 Medicare paid $166,966 for 1,175 patients, and Part D covered 286 of their prescriptions, 81% of them generic. Abbvie Inc. was the largest of 5 companies reporting payments in 2025, $338.28 in all, mostly food and beverage.
Overview
| NPI | 1922078294 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | O.D. |
| Sole proprietor | No |
| NPI issued | Jan 26, 2006 |
| Last updated in NPPES | Jan 11, 2023 |
| Certified by provider | Jan 11, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 9253T | CA |
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 - Optometry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,175 |
|---|---|
| Services billed | 2,986 across 30 procedure codes |
| Paid by Medicare | $166,966 |
Part D prescriptions in 2024
| Prescriptions (claims) | 286 · 491 30-day fills |
|---|---|
| Patients | 126 |
| Total drug cost | $23,309 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Pacific University - College of Optometry |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Optometry |
Medical group
- Kenneth R Grossman M D IncMerced, CA · 2 clinicians
Industry payments (Open Payments)
- 2025$338.28 · 15 payments from 5 companies
- 2024$185.66 · 11 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $204.76 | 8 |
| Glaukos Corporation | $41.51 | 2 |
| Tarsus Pharmaceuticals, Inc. | $33.73 | 2 |
| Alcon Vision LLC | $31.33 | 2 |
| Ani Pharmaceuticals, Inc. | $26.95 | 1 |
What the 2025 payments were for
- Food and Beverage$338.28 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 optometrists in Merced · All optometrists in California