Harpreet K. Singh, MD
NPI 1942258124ActiveIndividual· Internal Medicine, Bariatric Medicine· Oxnard, CA
Internal Medicine, Bariatric Medicine (MD) with Karandeep Singh MD PC, practicing in Oxnard, California. Their prescriptions cost Medicare Part D more than their services did: $113,449 for 626 claims, against $13,057 paid for services in 2024. Merck Sharp & Dohme LLC reported $28.17 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1942258124 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 4, 2006 |
| Last updated in NPPES | Jul 9, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Bariatric Medicine Primary | 207RB0002X | C55658 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 60 |
|---|---|
| Services billed | 210 across 14 procedure codes |
| Paid by Medicare | $13,057 |
Part D prescriptions in 2024
| Prescriptions (claims) | 626 · 1,406 30-day fills |
|---|---|
| Patients | 194 |
| Total drug cost | $113,449 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Karandeep Singh MD PCOxnard, CA · 4 clinicians
Industry payments (Open Payments)
- 2025$28.17 · 1 payment from 1 company
- 2024$144.69 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $28.17 | 1 |
What the 2025 payments were for
- Food and Beverage$28.17 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records