Ya-Yu Lee, MD
NPI 1235271545ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Allentown, PA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Lehigh Valley Physician Group and 1 other group, practicing in Allentown, Pennsylvania. In 2024 Medicare paid $858,182 for 927 patients, and Part D covered 2,555 of their prescriptions, 56% of them generic. Abbott Laboratories was the largest of 2 companies reporting payments in 2025, $167.77 in all, mostly food and beverage. Lists Lehigh Valley Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1235271545 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 13, 2007 |
| Last updated in NPPES | Nov 18, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | MD430220 | PA |
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 (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 927 |
|---|---|
| Services billed | 40,621 across 19 procedure codes |
| Paid by Medicare | $858,182 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,555 · 6,273 30-day fills |
|---|---|
| Patients | 492 |
| Total drug cost | $1,001,334 |
| Generic share | 56% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical groups
- Lehigh Valley Physician GroupAllentown, PA · 2,542 clinicians
- Keystone Rehabilitation Systems IncSeven Fields, PA · 776 clinicians
Hospital affiliations
- Lehigh Valley HospitalAllentown, PA
- Lehigh Valley Hospital - PoconoEast Stroudsburg, PA
- Schuylkill Medical Center - South Jackson StreetPottsville, PA
- St Luke's Warren HospitalPhillipsburg, NJ
- St Lukes HospitalBethlehem, PA
Industry payments (Open Payments)
- 2025$167.77 · 3 payments from 2 companies
- 2024$231.98 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $134.78 | 1 |
| Medtronic, Inc. | $32.99 | 2 |
What the 2025 payments were for
- Food and Beverage$167.77 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 endocrinologists in Allentown · All endocrinologists in Pennsylvania