Hla Myint Maung Shin Jian Hwang, M.D.
NPI 1356357560ActiveIndividual· Internal Medicine, Nephrology· Ontario, CA
Internal Medicine, Nephrology (M.D.) with Chaparral Medical Group Inc and 1 other group, practicing in Ontario, California. In 2024 Medicare paid $266,896 for 355 patients, and Part D covered 2,328 of their prescriptions, 83% of them generic. Ardelyx, Inc. was the largest of 5 companies reporting payments in 2025, $423.98 in all, mostly food and beverage. Lists Pomona Valley Hospital Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1356357560 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 31, 2006 |
| Last updated in NPPES | Jan 2, 2026 |
| Certified by provider | Jan 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A55844 | CA |
| Hospitalist | 208M00000X | A55844 | CA |
| Internal Medicine | 207R00000X | A55844 | CA |
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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 355 |
|---|---|
| Services billed | 1,854 across 12 procedure codes |
| Paid by Medicare | $266,896 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,328 · 4,125 30-day fills |
|---|---|
| Patients | 287 |
| Total drug cost | $340,063 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Chaparral Medical Group IncPomona, CA · 65 clinicians
- Our Family Medical Group IncRancho Cucamonga, CA · 6 clinicians
Hospital affiliations
- Pomona Valley Hospital Medical CenterPomona, CA
- San Antonio Regional HospitalUpland, CA
Other facilities
- Davita Chino DialysisDialysis facility · Chino, CA
- Davita Montclair Dialysis CenterDialysis facility · Montclair, CA
- Davita Pomona DialysisDialysis facility · Pomona, CA
- Davita Pomona Valley DialysisDialysis facility · Pomona, CA
- Usrc OntarioDialysis facility · Ontario, CA
Industry payments (Open Payments)
- 2025$423.98 · 19 payments from 5 companies
- 2024$444.04 · 25 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $161.01 | 9 |
| Akebia Therapeutics Inc | $115.28 | 5 |
| Calliditas Therapeutics US Inc. | $78.55 | 2 |
| Otsuka America Pharmaceutical, Inc. | $46.07 | 2 |
| Aurinia Pharma U.S., Inc. | $23.07 | 1 |
What the 2025 payments were for
- Food and Beverage$423.98 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other nephrologists in Ontario
- 1326184524
- 1164374948
- 1518153733