Renuka Umashanker, MD
NPI 1437130309ActiveIndividual· Internal Medicine, Gastroenterology· Hamden, CT
Internal Medicine, Gastroenterology (MD) with Hhc Physician Services PLLC, practicing in Hamden, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $514,566 for 1,619 claims, against $63,051 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 16 companies reporting payments in 2025, $63,607 in all, mostly speaking and faculty fees. Lists Bridgeport Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1437130309 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 8, 2005 |
| Last updated in NPPES | May 28, 2021 |
| Certified by provider | May 28, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036938 | CT |
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 - Gastroenterology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 304 |
|---|---|
| Services billed | 538 across 28 procedure codes |
| Paid by Medicare | $63,051 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,619 · 3,357 30-day fills |
|---|---|
| Patients | 466 |
| Total drug cost | $514,566 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Hhc Physician Services PLLCHamden, CT · 132 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Yale-New Haven HospitalNew Haven, CT
Industry payments (Open Payments)
- 2025$63,607 · 179 payments from 16 companies
- 2024$27,520 · 130 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $32,060 | 50 |
| Abbvie Inc. | $17,941 | 47 |
| Gilead Sciences, Inc. | $12,705 | 40 |
| Ardelyx, Inc. | $201.91 | 9 |
| Takeda Pharmaceuticals U.S.A., Inc. | $119.36 | 6 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$55,708 · 17 payments
- Food and Beverage$4,086 · 150 payments
- Travel and Lodging$3,814 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 21 gastroenterologists in Hamden · All gastroenterologists in Connecticut