Krisztina Ilona Larson, M.D.
NPI 1558703363ActiveIndividual· Internal Medicine, Hematology & Oncology· Burbank, CA
Internal Medicine, Hematology & Oncology (M.D.) with Providence Facey Medical Foundation and 1 other group, practicing in Burbank, California. Their prescriptions cost Medicare Part D more than their services did: $6,249,096 for 2,402 claims, against $183,386 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 35 companies reporting payments in 2025, $1,943 in all, mostly food and beverage. Lists Providence Saint Joseph Medical Ctr as a hospital affiliation.
Overview
| NPI | 1558703363 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 22, 2013 |
| Last updated in NPPES | Sep 5, 2025 |
| Certified by provider | Sep 5, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A158003 | 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 - Hematology/Oncology (CA); Practitioner - Hematology/Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 76 |
|---|---|
| Services billed | 9,536 across 50 procedure codes |
| Paid by Medicare | $183,386 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,402 · 3,406 30-day fills |
|---|---|
| Patients | 283 |
| Total drug cost | $6,249,096 |
| Generic share | 65% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Providence Facey Medical FoundationValencia, CA · 385 clinicians
- Providence Medical InstitutePark Ridge, IL · 288 clinicians
Hospital affiliation
- Providence Saint Joseph Medical CtrBurbank, CA
Other facilities
- Pacific Rim Home Health, IncHome health agency · Alhambra, CA
- Pro Am Home HealthHome health agency · North Hollywood, CA
- Five Star Home HospiceHospice · Pasadena, CA
Industry payments (Open Payments)
- 2025$1,943 · 83 payments from 35 companies
- 2024$5,570 · 233 payments from 45 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $206.67 | 7 |
| Astellas Pharma US Inc | $156.62 | 5 |
| Astrazeneca Pharmaceuticals LP | $150.30 | 10 |
| Pfizer Inc. | $95.99 | 7 |
| Bayer Healthcare Pharmaceuticals Inc. | $91.14 | 4 |
What the 2025 payments were for
- Food and Beverage$1,821 · 80 payments
- Education$122.63 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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