Harman Rahal Grewal
NPI 1922502103ActiveIndividual· Internal Medicine, Gastroenterology· Bakersfield, CA
Internal Medicine, Gastroenterology in Bakersfield, California, trained at University of California, Irvine, California College of Medicine (class of 2018). Mostly services rather than prescriptions: Medicare paid $8,992 for 66 patients in 2024, with only 20 Part D claims. Ardelyx, Inc. was the largest of 11 companies reporting payments in 2025, $1,050 in all, mostly food and beverage.
Overview
| NPI | 1922502103 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Mar 21, 2018 |
| Last updated in NPPES | Oct 12, 2026 |
| Certified by provider | Oct 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A166800 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 66 |
|---|---|
| Services billed | 137 across 14 procedure codes |
| Paid by Medicare | $8,992 |
Part D prescriptions in 2024
| Prescriptions (claims) | 20 · 35 30-day fills |
|---|---|
| Patients | 13 |
| Total drug cost | $2,358 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Gastroenterology |
Medical group
- Paramvir S Rahal M D IncDelano, CA · 6 clinicians
Hospital affiliations
- Adventist Health BakersfieldBakersfield, CA
- Adventist Health DelanoDelano, CA
- Bakersfield Memorial HospitalBakersfield, CA
- Mercy HospitalBakersfield, CA
- Sierra View Medical CenterPorterville, CA
Industry payments (Open Payments)
- 2025$1,050 · 77 payments from 11 companies
- 2024$14.19 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $390.68 | 29 |
| Aimmune Therapeutics, Inc. | $292.65 | 30 |
| Abbvie Inc. | $109.57 | 5 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $57.91 | 3 |
| Ipsen Biopharmaceuticals, Inc | $50.73 | 2 |
What the 2025 payments were for
- Food and Beverage$1,050 · 77 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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