Christina E. Kwack-Yuhan, M.D.
NPI 1871673244ActiveIndividual· Internal Medicine, Nephrology· Woburn, MA
Internal Medicine, Nephrology (M.D.) with Woburn Nephrology Associates PC, practicing in Woburn, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $427,798 for 2,116 claims, against $179,316 paid for services in 2024. Travere Therapeutics, Inc. was the largest of 5 companies reporting payments in 2025, $291.26 in all, mostly food and beverage. Lists Beth Israel Deaconess Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1871673244 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 17, 2006 |
| Last updated in NPPES | Aug 20, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 227037 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 597 |
|---|---|
| Services billed | 1,747 across 34 procedure codes |
| Paid by Medicare | $179,316 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,116 · 5,468 30-day fills |
|---|---|
| Patients | 343 |
| Total drug cost | $427,798 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Woburn Nephrology Associates PCDover, MA · 6 clinicians
Hospital affiliations
- Beth Israel Deaconess Medical CenterBoston, MA
- Lahey Hospital & Medical Center, BurlingtonBurlington, MA
- Melrosewakefield HealthcareMelrose, MA
- Tufts Medical CenterBoston, MA
- Winchester HospitalWinchester, MA
Other facilities
- Davita Wellington Circle Dialysis CenterDialysis facility · Medford, MA
- Davita Woburn DialysisDialysis facility · Woburn, MA
- Davita - Mystic River Home TrainingDialysis facility · Cambridge, MA
Industry payments (Open Payments)
- 2025$291.26 · 27 payments from 5 companies
- 2024$133.81 · 14 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Travere Therapeutics, Inc. | $138.09 | 20 |
| Novo Nordisk Inc | $84.91 | 4 |
| Otsuka America Pharmaceutical, Inc. | $25.02 | 1 |
| Ardelyx, Inc. | $24.46 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $18.78 | 1 |
What the 2025 payments were for
- Food and Beverage$213.16 · 10 payments
- Education$78.10 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Nephrology providers in Massachusetts →