Dorsa F. Maryska, M.D.
NPI 1851598866ActiveIndividual· Internal Medicine, Nephrology· Montebello, CA
Internal Medicine, Nephrology (M.D.) with Kidney Specialists Medical Corporation, practicing in Montebello, California. Their prescriptions cost Medicare Part D more than their services did: $452,521 for 2,155 claims, against $199,319 paid for services in 2024. Fresenius USA Marketing, Inc. was the largest of 2 companies reporting payments in 2025, $63.99 in all, mostly food and beverage. Lists Pih Health Downey Hospital as a hospital affiliation.
Overview
| NPI | 1851598866 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 2, 2007 |
| Last updated in NPPES | Aug 1, 2022 |
| Certified by provider | Aug 1, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A92799 | CA |
| Internal Medicine | 207R00000X | A97299 | 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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 148 |
|---|---|
| Services billed | 882 across 13 procedure codes |
| Paid by Medicare | $199,319 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,155 · 3,580 30-day fills |
|---|---|
| Patients | 211 |
| Total drug cost | $452,521 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Kidney Specialists Medical CorporationMontebello, CA · 6 clinicians
Hospital affiliation
- Pih Health Downey HospitalDowney, CA
Other facilities
- Davita Bluff Rd DialysisDialysis facility · Montebello, CA
- Davita Huntington Park DialysisDialysis facility · Huntington Park, CA
- Davita Monterey Park Dialysis CenterDialysis facility · Monterey Park, CA
- Davita Universal Huntington ParkDialysis facility · Vernon, CA
- Usrc Montebello DialysisDialysis facility · Montebello, CA
Industry payments (Open Payments)
- 2025$63.99 · 3 payments from 2 companies
- 2024$33.49 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Fresenius USA Marketing, Inc. | $37.78 | 2 |
| Novartis Pharmaceuticals Corporation | $26.21 | 1 |
What the 2025 payments were for
- Food and Beverage$63.99 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 20 nephrologists in Montebello · All nephrologists in California