Helen Chang-Deguzman, M.D.
NPI 1710989926ActiveIndividual· Internal Medicine, Nephrology· Elkton, MD
Internal Medicine, Nephrology (M.D.) in Elkton, Maryland, trained at Jefferson Medical College of Thomas Jefferson University (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $477,515 for 1,566 claims, against $163,654 paid for services in 2024. Ardelyx, Inc. was the largest of 19 companies reporting payments in 2025, $1,506 in all, mostly food and beverage.
Overview
| NPI | 1710989926 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 1, 2005 |
| Last updated in NPPES | Jun 17, 2021 |
| Certified by provider | Jun 17, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | D0057355 | MD |
| Internal Medicine, Nephrology | 207RN0300X | C1-0006336 | DE |
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 - Nephrology (DE); Practitioner - Nephrology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 686 |
|---|---|
| Services billed | 3,060 across 28 procedure codes |
| Paid by Medicare | $163,654 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,566 · 3,945 30-day fills |
|---|---|
| Patients | 304 |
| Total drug cost | $477,515 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Christiana Care Health Services IncNewark, DE · 1,483 clinicians
- Nephrology Associates PAWilmington, DE · 54 clinicians
Hospital affiliations
- Christiana HospitalNewark, DE
- Union Hospital of Cecil CountyElkton, MD
Other facilities
- Fkc First StateDialysis facility · New Castle, DE
- Fmc - ElktonDialysis facility · Elkton, MD
Industry payments (Open Payments)
- 2025$1,506 · 64 payments from 19 companies
- 2024$1,390 · 65 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $288.62 | 6 |
| Novartis Pharmaceuticals Corporation | $249.00 | 12 |
| Otsuka America Pharmaceutical, Inc. | $116.85 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $98.12 | 5 |
| Fresenius USA Marketing, Inc. | $78.97 | 3 |
What the 2025 payments were for
- Food and Beverage$1,506 · 64 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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