Courtney Nagel Sandler, M.D.
NPI 1164746178ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Boston, MA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Boston, Massachusetts, trained at Icahn School of Medicine at Mount Sinai (class of 2010). Their prescriptions cost Medicare Part D more than their services did: $654,519 for 1,106 claims, against $39,791 paid for services in 2024. Tandem Diabetes Care, Inc. was the largest of 3 companies reporting payments in 2025, $261.74 in all, mostly food and beverage.
Overview
| NPI | 1164746178 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 19, 2010 |
| Last updated in NPPES | Nov 19, 2021 |
| Certified by provider | Nov 19, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 275280 | MA |
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 - Endocrinology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 110 |
|---|---|
| Services billed | 2,254 across 47 procedure codes |
| Paid by Medicare | $39,791 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,106 · 2,324 30-day fills |
|---|---|
| Patients | 204 |
| Total drug cost | $654,519 |
| Generic share | 42% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 2010 |
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical groups
- Atrius Health IncBraintree, MA · 1,222 clinicians
- Children's Hospital Pediatric Associates, IncBoston, MA · 328 clinicians
Hospital affiliation
- Brigham and Women's HospitalBoston, MA
Industry payments (Open Payments)
- 2025$261.74 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tandem Diabetes Care, Inc. | $123.16 | 1 |
| Sequel Med Tech, LLC | $119.20 | 1 |
| Abbott Laboratories | $19.38 | 1 |
What the 2025 payments were for
- Food and Beverage$261.74 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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