Tarun Marwaha, M.D.
NPI 1407964976ActiveIndividual· Internal Medicine, Nephrology· Fountain Valley, CA
Internal Medicine, Nephrology (M.D.) with Pacific Renal Care Medical Corp, practicing in Fountain Valley, California. Their prescriptions cost Medicare Part D more than their services did: $900,732 for 696 claims, against $384,652 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 4 companies reporting payments in 2025, $437.90 in all, mostly food and beverage. Lists Foothill Regional Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1407964976 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 26, 2006 |
| Last updated in NPPES | Feb 2, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A70632 | 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 | 671 |
|---|---|
| Services billed | 5,066 across 9 procedure codes |
| Paid by Medicare | $384,652 |
Part D prescriptions in 2024
| Prescriptions (claims) | 696 · 1,417 30-day fills |
|---|---|
| Patients | 113 |
| Total drug cost | $900,732 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Pacific Renal Care Medical CorpFountain Valley, CA · 3 clinicians
Hospital affiliations
- Foothill Regional Medical CenterTustin, CA
- Garden Grove Hospital & Medical CenterGarden Grove, CA
- Huntington Beach HospitalHuntington Beach, CA
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Uci Health-OrangeOrange, CA
Other facilities
- Fmc-University Dialysis Center of OrangeDialysis facility · Orange, CA
- Fresenius Medical Care Anaheim DialysisDialysis facility · Anaheim, CA
- Fresenius Medical Care Santa Ana DialysisDialysis facility · Santa Ana, CA
- Rai-Harbor Blvd - Garden GroveDialysis facility · Garden Grove, CA
Industry payments (Open Payments)
- 2025$437.90 · 4 payments from 4 companies
- 2024$203.18 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $141.94 | 1 |
| Ardelyx, Inc. | $119.79 | 1 |
| Astrazeneca Pharmaceuticals LP | $119.76 | 1 |
| Gastroklenz, Inc. DBA Cloudcath | $56.41 | 1 |
What the 2025 payments were for
- Food and Beverage$437.90 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 nephrologists in Fountain Valley · All nephrologists in California