Tiffany Tsang, M.D.
NPI 1164868535ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Newark, NJ
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Newark, New Jersey, trained at Texas Tech University Health Science Center School of Medicine (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $1,170,487 for 2,599 claims, against $71,967 paid for services in 2024. Novo Nordisk Inc was the largest of 14 companies reporting payments in 2025, $1,631 in all, mostly food and beverage.
Overview
| NPI | 1164868535 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 13, 2013 |
| Last updated in NPPES | Jun 3, 2025 |
| Certified by provider | Jun 3, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 25MA10554300 | NJ |
| Internal Medicine | 207R00000X | 0101264798 | VA |
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 (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 294 |
|---|---|
| Services billed | 1,977 across 11 procedure codes |
| Paid by Medicare | $71,967 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,599 · 6,644 30-day fills |
|---|---|
| Patients | 431 |
| Total drug cost | $1,170,487 |
| Generic share | 50% of claims |
Education and affiliations
| Medical school | Texas Tech University Health Science Center School of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Advocare, LLCHaddonfield, NJ · 386 clinicians
Hospital affiliation
- University Medical Center of Princeton at PlainsboroPlainsboro, NJ
Industry payments (Open Payments)
- 2025$1,631 · 43 payments from 14 companies
- 2024$359.85 · 10 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $534.15 | 20 |
| Abbott Laboratories | $288.54 | 8 |
| Insulet Corporation | $107.65 | 1 |
| Sequel Med Tech, LLC | $107.19 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $106.33 | 1 |
What the 2025 payments were for
- Food and Beverage$1,631 · 43 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 endocrinologists in Newark · All endocrinologists in New Jersey