Essam Maasarani, M.D.
NPI 1366448136ActiveIndividual· Internal Medicine, Nephrology· Long Beach, CA
Internal Medicine, Nephrology (M.D.) with Coast Nephrology Medical Group Inc., practicing in Long Beach, California. In 2024 Medicare paid $171,531 for 233 patients, and Part D covered 1,912 of their prescriptions, 87% of them generic. Calliditas Therapeutics US Inc. was the largest of 3 companies reporting payments in 2025, $258.09 in all, mostly food and beverage. Lists Memorialcare Long Beach Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1366448136 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 24, 2005 |
| Last updated in NPPES | Aug 13, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A045446 | 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 | 233 |
|---|---|
| Services billed | 2,792 across 21 procedure codes |
| Paid by Medicare | $171,531 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,912 · 3,359 30-day fills |
|---|---|
| Patients | 152 |
| Total drug cost | $236,567 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1981 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Coast Nephrology Medical Group Inc.Long Beach, CA · 7 clinicians
Hospital affiliations
- Memorialcare Long Beach Medical CenterLong Beach, CA
- St Mary Medical CenterLong Beach, CA
- Uci Health-OrangeOrange, CA
Other facilities
- Usrc Long Beach DialysisDialysis facility · Long Beach, CA
- Usrc West Coast DialysisDialysis facility · Long Beach, CA
Industry payments (Open Payments)
- 2025$258.09 · 6 payments from 3 companies
- 2024$63.16 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $124.26 | 1 |
| Novartis Pharmaceuticals Corporation | $106.61 | 4 |
| Otsuka America Pharmaceutical, Inc. | $27.22 | 1 |
What the 2025 payments were for
- Food and Beverage$258.09 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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