Cerrah Lynn Mendelsohn-Elzam, M.D.
NPI 1568679736ActiveIndividual· Internal Medicine· Greenwich, CT
Internal Medicine (M.D.) in Greenwich, Connecticut, trained at University of California, Davis School of Medicine (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $123,953 for 1,690 claims, against $45,744 paid for services in 2024. Exact Sciences Corporation was the largest of 11 companies reporting payments in 2025, $443.13 in all, mostly food and beverage.
Overview
| NPI | 1568679736 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 17, 2007 |
| Last updated in NPPES | Mar 30, 2022 |
| Certified by provider | Mar 30, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 45295 | CT |
| Emergency Medicine | 207P00000X | 045295 | 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 - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 140 |
|---|---|
| Services billed | 706 across 21 procedure codes |
| Paid by Medicare | $45,744 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,690 · 3,686 30-day fills |
|---|---|
| Patients | 185 |
| Total drug cost | $123,953 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Emergency Medicine |
| Telehealth | Offers telehealth |
Medical group
- Glenville Medical Associates P.CGreenwich, CT · 7 clinicians
Hospital affiliations
- Greenwich Hospital Association -Greenwich, CT
- Nantucket Cottage HospitalNantucket, MA
Other facilities
- Health Care Connectors LLCHome health agency · Greenwich, CT
Industry payments (Open Payments)
- 2025$443.13 · 19 payments from 11 companies
- 2024$211.89 · 8 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $94.27 | 4 |
| Amgen Inc. | $66.85 | 3 |
| Pfizer Inc. | $48.27 | 2 |
| Novo Nordisk Inc | $47.63 | 2 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $41.97 | 2 |
What the 2025 payments were for
- Food and Beverage$443.13 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 73 internal medicine physicians in Greenwich · All internal medicine physicians in Connecticut