Dhammi Kaushalya Jayathilaka, M.D
NPI 1861854440ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Ypsilanti, MI
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D) with Ann Arbor Endocrinology and Diabetes Associates, P.C., practicing in Ypsilanti, Michigan. Their prescriptions cost Medicare Part D more than their services did: $572,284 for 1,068 claims, against $30,612 paid for services in 2024. Medtronic, Inc. was the largest of 2 companies reporting payments in 2025, $76.95 in all, mostly food and beverage. Lists Chelsea Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1861854440 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | No |
| NPI issued | Mar 23, 2016 |
| Last updated in NPPES | Jan 19, 2026 |
| Certified by provider | Jan 19, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 4301506414 | MI |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
| Internal Medicine | 207R00000X | 300873 | NY |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 162 |
|---|---|
| Services billed | 354 across 10 procedure codes |
| Paid by Medicare | $30,612 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,068 · 2,267 30-day fills |
|---|---|
| Patients | 194 |
| Total drug cost | $572,284 |
| Generic share | 39% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Ann Arbor Endocrinology and Diabetes Associates, P.C.Ypsilanti, MI · 6 clinicians
Hospital affiliations
- Chelsea HospitalChelsea, MI
- Trinity Health Ann Arbor HospitalAnn Arbor, MI
- Trinity Health Livingston HospitalHowell, MI
- Trinity Health Oakland HospitalPontiac, MI
- University of Michigan Health SystemAnn Arbor, MI
Industry payments (Open Payments)
- 2025$76.95 · 2 payments from 2 companies
- 2024$78.63 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $62.66 | 1 |
| Lilly USA, LLC | $14.29 | 1 |
What the 2025 payments were for
- Food and Beverage$76.95 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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