Margaret Natalie-Haslett Bischer, A-GNP-C
NPI 1679253041ActiveIndividual· Nurse Practitioner, Primary Care· La Jolla, CA
Nurse Practitioner, Primary Care (A-GNP-C) with Monica Perlman MD Inc, practicing in La Jolla, California. Their prescriptions cost Medicare Part D more than their services did: $74,558 for 733 claims, against $28,674 paid for services in 2024. Heartflow, Inc. was the largest of 16 companies reporting payments in 2025, $687.32 in all, mostly food and beverage. Lists Uc San Diego Health Hillcrest - Hillcrest Med Ctr as a hospital affiliation.
Overview
| NPI | 1679253041 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | A-GNP-C |
| Sole proprietor | No |
| NPI issued | Jul 20, 2023 |
| Last updated in NPPES | Jul 20, 2023 |
| Certified by provider | Jun 8, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Primary Care Primary | 363LP2300X | 95026124 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 190 |
|---|---|
| Services billed | 451 across 37 procedure codes |
| Paid by Medicare | $28,674 |
Part D prescriptions in 2024
| Prescriptions (claims) | 733 · 1,329 30-day fills |
|---|---|
| Patients | 199 |
| Total drug cost | $74,558 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2023 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Monica Perlman MD IncSan Diego, CA · 364 clinicians
Hospital affiliation
- Uc San Diego Health Hillcrest - Hillcrest Med CtrSan Diego, CA
Industry payments (Open Payments)
- 2025$687.32 · 25 payments from 16 companies
- 2024$311.35 · 15 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Heartflow, Inc. | $125.25 | 1 |
| Hologic Sales and Service, LLC | $97.24 | 4 |
| Glaxosmithkline, LLC. | $79.08 | 3 |
| Astrazeneca Pharmaceuticals LP | $55.81 | 3 |
| Novo Nordisk Inc | $43.93 | 2 |
What the 2025 payments were for
- Food and Beverage$687.32 · 25 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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