Nathaniel G. Clark, MD
NPI 1386687234ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Hyannis, MA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Hyannis, Massachusetts, trained at University of Massachusetts Medical School (class of 1988). In 2024 Medicare paid $13,295 for 97 patients, and Part D covered 127 of their prescriptions, 83% of them generic. Abbvie Inc. reported $16.19 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1386687234 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 14, 2006 |
| Last updated in NPPES | Sep 27, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 72154 | MA |
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 - Endocrinology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 97 |
|---|---|
| Services billed | 330 across 7 procedure codes |
| Paid by Medicare | $13,295 |
Part D prescriptions in 2024
| Prescriptions (claims) | 127 · 267 30-day fills |
|---|---|
| Patients | 38 |
| Total drug cost | $2,512 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of Massachusetts Medical School |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Medical Affiliates of Cape Cod IncHyannis, MA · 229 clinicians
Hospital affiliations
- Cape Cod HospitalHyannis, MA
- Falmouth HospitalFalmouth, MA
Industry payments (Open Payments)
- 2025$16.19 · 1 payment from 1 company
- 2024$163.22 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $16.19 | 1 |
What the 2025 payments were for
- Food and Beverage$16.19 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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