Manakan B. Srichai, MD
NPI 1396772299ActiveIndividual· Internal Medicine, Nephrology· Somerset, NJ
Internal Medicine, Nephrology (MD) in Somerset, New Jersey, trained at West Virginia University School of Medicine (class of 1998). 221 Medicare patients in 2024, $105,479 paid; nearly all of their 644 Part D prescriptions were generic (92%). Ardelyx, Inc. was the largest of 5 companies reporting payments in 2025, $85.12 in all, mostly food and beverage.
Overview
| NPI | 1396772299 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 27, 2006 |
| Last updated in NPPES | Aug 3, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 25MA08736200 | NJ |
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 (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 221 |
|---|---|
| Services billed | 943 across 18 procedure codes |
| Paid by Medicare | $105,479 |
Part D prescriptions in 2024
| Prescriptions (claims) | 644 · 1,413 30-day fills |
|---|---|
| Patients | 85 |
| Total drug cost | $47,683 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | West Virginia University School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Associated Renal and Hypertension Group, PCSomerset, NJ · 4 clinicians
Hospital affiliations
- Robert Wood Johnson University HospitalNew Brunswick, NJ
- Robert Wood Johnson University Hospital - SomersetSomerville, NJ
- Saint Peter's University HospitalNew Brunswick, NJ
Other facilities
- Dci New BrunswickDialysis facility · New Brunswick, NJ
- Davita Hamilton Street DialysisDialysis facility · Somerset, NJ
- Davita Hillsborough DialysisDialysis facility · Hillsborough, NJ
Industry payments (Open Payments)
- 2025$85.12 · 5 payments from 5 companies
- 2024$76.07 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $18.77 | 1 |
| Calliditas Therapeutics US Inc. | $18.69 | 1 |
| Astrazeneca Pharmaceuticals LP | $17.69 | 1 |
| Amgen Inc. | $16.09 | 1 |
| Otsuka America Pharmaceutical, Inc. | $13.88 | 1 |
What the 2025 payments were for
- Food and Beverage$85.12 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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