Gregory R. Klis, MD
NPI 1508844648ActiveIndividual· Obstetrics & Gynecology· Bakersfield, CA
Obstetrics & Gynecology (MD) in Bakersfield, California, trained at University of Minnesota Medical School (class of 1992). 271 Medicare patients in 2024, $44,774 paid; nearly all of their 543 Part D prescriptions were generic (94%). Sage Therapeutics, LLC was the largest of 9 companies reporting payments in 2025, $424.66 in all, mostly food and beverage.
Overview
| NPI | 1508844648 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jan 9, 2006 |
| Last updated in NPPES | Jul 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | G83369 | 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 - Obstetrics/Gynecology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 271 |
|---|---|
| Services billed | 750 across 43 procedure codes |
| Paid by Medicare | $44,774 |
Part D prescriptions in 2024
| Prescriptions (claims) | 543 · 1,050 30-day fills |
|---|---|
| Patients | 179 |
| Total drug cost | $28,045 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | University of Minnesota Medical School |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Obstetrics/Gynecology |
Hospital affiliations
- Adventist Health BakersfieldBakersfield, CA
- Mercy HospitalBakersfield, CA
Industry payments (Open Payments)
- 2025$424.66 · 28 payments from 9 companies
- 2024$810.56 · 28 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sage Therapeutics, LLC | $95.48 | 4 |
| Organon LLC | $77.70 | 12 |
| Astellas Pharma US Inc | $57.49 | 2 |
| Sumitomo Pharma America, Inc. | $56.84 | 3 |
| Evofem Biosciences, Inc. | $56.35 | 3 |
What the 2025 payments were for
- Food and Beverage$424.66 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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