Karen Kohatsu
NPI 1679517239ActiveIndividual· Obstetrics & Gynecology· San Diego, CA
Obstetrics & Gynecology in San Diego, California, trained at University of California, Geffen School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $52,582 for 578 claims, against $29,000 paid for services in 2024. Mayne Pharma Commercial LLC was the largest of 6 companies reporting payments in 2025, $1,118 in all, mostly food and beverage.
Overview
| NPI | 1679517239 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Jun 15, 2006 |
| Last updated in NPPES | Jun 13, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | G70665 | 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 | 163 |
|---|---|
| Services billed | 386 across 25 procedure codes |
| Paid by Medicare | $29,000 |
Part D prescriptions in 2024
| Prescriptions (claims) | 578 · 1,148 30-day fills |
|---|---|
| Patients | 167 |
| Total drug cost | $52,582 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Obstetrics/Gynecology |
Hospital affiliation
- Palomar Medical Center PowayPoway, CA
Industry payments (Open Payments)
- 2025$1,118 · 62 payments from 6 companies
- 2024$1,181 · 49 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mayne Pharma Commercial LLC | $656.34 | 32 |
| Evofem Biosciences, Inc. | $183.52 | 16 |
| Abbvie Inc. | $136.92 | 7 |
| Sumitomo Pharma America, Inc. | $50.77 | 3 |
| Millicent US Inc | $48.89 | 2 |
What the 2025 payments were for
- Food and Beverage$1,118 · 62 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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