Adam K. Horeish, MD
NPI 1760461206ActiveIndividual· Internal Medicine, Nephrology· Chula Vista, CA
Internal Medicine, Nephrology (MD) with Balboa Nephrology Medical Group Inc, practicing in Chula Vista, California. Their prescriptions cost Medicare Part D more than their services did: $703,902 for 2,424 claims, against $180,932 paid for services in 2024. Alnylam Pharmaceuticals Inc. was the largest of 4 companies reporting payments in 2025, $218.00 in all, mostly food and beverage. Lists Paradise Valley Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1760461206 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 12, 2006 |
| Last updated in NPPES | Aug 24, 2026 |
| Certified by provider | Aug 24, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 56089 | 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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 343 |
|---|---|
| Services billed | 1,628 across 18 procedure codes |
| Paid by Medicare | $180,932 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,424 · 5,917 30-day fills |
|---|---|
| Patients | 346 |
| Total drug cost | $703,902 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- Balboa Nephrology Medical Group IncFountain Valley, CA · 76 clinicians
Hospital affiliations
- Paradise Valley HospitalNational City, CA
- Scripps Mercy HospitalSan Diego, CA
- Sharp Chula Vista Medical CenterChula Vista, CA
Other facilities
- Fresenius Medical Care Marina BayDialysis facility · Chula Vista, CA
Industry payments (Open Payments)
- 2025$218.00 · 6 payments from 4 companies
- 2024$205.66 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alnylam Pharmaceuticals Inc. | $143.90 | 1 |
| Astrazeneca Pharmaceuticals LP | $51.71 | 3 |
| Fresenius USA Marketing, Inc. | $22.00 | 1 |
| Travere Therapeutics, Inc. | $0.39 | 1 |
What the 2025 payments were for
- Food and Beverage$217.61 · 5 payments
- Education$0.39 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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