Ian D. Kleinhen, M.D.
NPI 1013916808ActiveIndividual· Internal Medicine· Windsor, CT
Internal Medicine (M.D.) in Windsor, Connecticut, trained at Georgetown University School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $515,069 for 3,862 claims, against $52,107 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 3 companies reporting payments in 2025, $350.23 in all, mostly food and beverage.
Overview
| NPI | 1013916808 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 14, 2005 |
| Last updated in NPPES | Feb 27, 2020 |
| Certified by provider | Feb 27, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036853 | CT |
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 - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 131 |
|---|---|
| Services billed | 625 across 27 procedure codes |
| Paid by Medicare | $52,107 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,862 · 8,927 30-day fills |
|---|---|
| Patients | 231 |
| Total drug cost | $515,069 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
Medical groups
- Ptsma IncAnsonia, CT · 224 clinicians
- McLean FundSimsbury, CT · 108 clinicians
Hospital affiliation
- Hartford HospitalHartford, CT
Industry payments (Open Payments)
- 2025$350.23 · 11 payments from 3 companies
- 2024$461.60 · 29 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $212.93 | 9 |
| Baxter Healthcare | $117.92 | 1 |
| Amgen Inc. | $19.38 | 1 |
What the 2025 payments were for
- Food and Beverage$350.23 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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