Ron Gutmark, MD
NPI 1609189893ActiveIndividual· Ophthalmology· Glendora, CA
Ophthalmology (MD) in Glendora, California, trained at Johns Hopkins University School of Medicine (class of 2010). Their prescriptions cost Medicare Part D more than their services did: $596,083 for 2,865 claims, against $24,503 paid for services in 2024. Amgen Inc. was the largest of 10 companies reporting payments in 2025, $1,728 in all, mostly food and beverage.
Overview
| NPI | 1609189893 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 16, 2010 |
| Last updated in NPPES | Jun 29, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | A129409 | CA |
| Internal Medicine | 207R00000X | P25846 | MD |
| Ophthalmology | 207W00000X | MD447468 | PA |
| Ophthalmology | 207W00000X | 4301106769 | MI |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 55 |
|---|---|
| Services billed | 172 across 21 procedure codes |
| Paid by Medicare | $24,503 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,865 · 4,155 30-day fills |
|---|---|
| Patients | 822 |
| Total drug cost | $596,083 |
| Generic share | 53% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 2010 |
| Medicare specialty | Ophthalmology |
Medical group
- Almira Wilson Cann MD IncPasadena, CA · 2 clinicians
Industry payments (Open Payments)
- 2025$1,728 · 83 payments from 10 companies
- 2024$823.30 · 46 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $789.59 | 49 |
| Sun Pharmaceutical Industries Inc. | $427.42 | 13 |
| Alcon Vision LLC | $118.49 | 5 |
| Oyster Point Pharma, Inc. | $94.22 | 4 |
| Thea Pharma Inc. | $88.54 | 4 |
What the 2025 payments were for
- Food and Beverage$1,728 · 83 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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