Stephen A. Klein, M.D.
Internal Medicine (M.D.) in West Nyack, New York, trained at New York Medical College (class of 1980). 206 Medicare patients in 2024, $92,538 paid; nearly all of their 916 Part D prescriptions were generic (95%). Lilly USA, LLC was the largest of 2 companies reporting payments in 2025, $61.37 in all, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1831257872 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 4, 2006 |
| Last updated in NPPES | Oct 5, 2020 |
| Certified by provider | Oct 5, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 151797 | NY |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in New York, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Stephen Howard Klein · General Practice/Fp | 1128b5 | Oct 6, 1997 | Great Neck, NY |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| 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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 206 |
|---|---|
| Services billed | 2,695 across 45 procedure codes |
| Paid by Medicare | $92,538 |
Part D prescriptions in 2024
| Prescriptions (claims) | 916 · 2,453 30-day fills |
|---|---|
| Patients | 158 |
| Total drug cost | $26,359 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Rockland Endocrine and Diabetes Services, P.C.Suffern, NY · 12 clinicians
Hospital affiliation
- Good Samaritan Hospital of SuffernSuffern, NY
Industry payments (Open Payments)
- 2025$61.37 · 3 payments from 2 companies
- 2024$320.20 · 15 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $43.72 | 2 |
| Corcept Therapeutics | $17.65 | 1 |
What the 2025 payments were for
- Food and Beverage$61.37 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 internal medicine physicians in West Nyack · All internal medicine physicians in New York