Katherine Mary Cohen, FNP-C
NPI 1043753650ActiveIndividual· Internal Medicine, Hematology & Oncology· Santa Clarita, CA
Internal Medicine, Hematology & Oncology (FNP-C) with The Regents of the University of California, practicing in Santa Clarita, California. Part D covered 1,553 prescriptions written in 2024, 80% of them generic. Stemline Therapeutics Inc. was the largest of 6 companies reporting payments in 2025, $6,524 in all, mostly speaking and faculty fees. Lists Henry Mayo Newhall Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1043753650 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP-C |
| Sole proprietor | No |
| NPI issued | Nov 30, 2016 |
| Last updated in NPPES | Oct 30, 2025 |
| Certified by provider | Oct 30, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 95005532 | CA |
| Nurse Practitioner, Family | 363LF0000X | 95005532 | 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 - Nurse Practitioner (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 1,553 · 2,941 30-day fills |
|---|---|
| Patients | 369 |
| Total drug cost | $2,169,314 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- The Regents of the University of CaliforniaSanta Monica, CA · 1,462 clinicians
Hospital affiliations
- Henry Mayo Newhall HospitalValencia, CA
- Ridgecrest Regional HospitalRidgecrest, CA
Industry payments (Open Payments)
- 2025$6,524 · 27 payments from 6 companies
- 2024$1,510 · 12 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stemline Therapeutics Inc. | $5,090 | 11 |
| Novartis Pharmaceuticals Corporation | $1,147 | 12 |
| Astrazeneca Pharmaceuticals LP | $124.99 | 1 |
| Pfizer Inc. | $122.77 | 1 |
| Celgene Corporation | $21.51 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$2,860 · 4 payments
- Travel and Lodging$1,180 · 3 payments
- Long term medical supply or device loan$1,147 · 12 payments
- Food and Beverage$676.85 · 7 payments
- Consulting Fee$660.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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