Marilyn Sandra Norton, MD
NPI 1417060054ActiveIndividual· Internal Medicine, Hematology & Oncology· Chula Vista, CA
Internal Medicine, Hematology & Oncology (MD) in Chula Vista, California, trained at Loma Linda University School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $7,870,174 for 1,468 claims, against $2,846,336 paid for services in 2024. Alexion Pharmaceuticals, Inc. was the largest of 26 companies reporting payments in 2025, $1,403 in all, mostly food and beverage.
Overview
| NPI | 1417060054 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 17, 2006 |
| Last updated in NPPES | Jul 20, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | G70444 | CA |
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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 609 |
|---|---|
| Services billed | 272,639 across 104 procedure codes |
| Paid by Medicare | $2,846,336 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,468 · 2,211 30-day fills |
|---|---|
| Patients | 228 |
| Total drug cost | $7,870,174 |
| Generic share | 65% of claims |
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Hematology/Oncology |
Medical groups
- Emergency and Acute Care Medical CorporationLa Mesa, CA · 422 clinicians
- Marilyn S. Norton M.D., Inc.Chula Vista, CA · 2 clinicians
Hospital affiliations
- Grossmont HospitalLa Mesa, CA
- Scripps Mercy HospitalSan Diego, CA
- Sharp Chula Vista Medical CenterChula Vista, CA
- Sharp Memorial HospitalSan Diego, CA
Other facilities
- Mission Home Health of San Diego LLCHome health agency · San Diego, CA
- Mission Hospice Services of San Diego LLCHospice · San Diego, CA
Industry payments (Open Payments)
- 2025$1,403 · 53 payments from 26 companies
- 2024$351.26 · 13 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alexion Pharmaceuticals, Inc. | $182.15 | 6 |
| Celgene Corporation | $103.10 | 4 |
| Merck Sharp & Dohme LLC | $94.91 | 3 |
| Pfizer Inc. | $90.64 | 4 |
| Abbvie Inc. | $81.22 | 4 |
What the 2025 payments were for
- Food and Beverage$1,403 · 53 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Hematology & Oncology providers in California →