Sundar Ramanathan, M.D.
NPI 1629105234ActiveIndividual· Internal Medicine, Nephrology· Flint, MI
Internal Medicine, Nephrology (M.D.) with McLaren Flint and 1 other group, practicing in Flint, Michigan. Their prescriptions cost Medicare Part D more than their services did: $271,554 for 3,310 claims, against $132,408 paid for services in 2024. Lists Hurley Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1629105234 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 28, 2007 |
| Last updated in NPPES | Jul 2, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 4301083236 | MI |
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 - Internal Medicine (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 399 |
|---|---|
| Services billed | 1,246 across 22 procedure codes |
| Paid by Medicare | $132,408 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,310 · 7,828 30-day fills |
|---|---|
| Patients | 581 |
| Total drug cost | $271,554 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Nephrology |
| Telehealth | Offers telehealth |
Medical groups
- McLaren FlintFlint, MI · 143 clinicians
- Mid Michigan Kidney and Hypertension Specialists, P.C.Flint, MI · 3 clinicians
Hospital affiliations
- Hurley Medical CenterFlint, MI
- Marlette Regional HospitalMarlette, MI
- McKenzie Health SystemSandusky, MI
- McLaren FlintFlint, MI
- McLaren Lapeer RegionLapeer, MI
Other facilities
- Bma FlintDialysis facility · Flint, MI
- Rrc - DavisonDialysis facility · Davison, MI
- Rrc - LapeerDialysis facility · Lapeer, MI
- Rrc - Mt MorrisDialysis facility · Mount Morris, MI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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