Muay Chiing Hernandez Pons, MD
NPI 1003251224ActiveIndividual· Internal Medicine, Hematology & Oncology· Caguas, PR
Internal Medicine, Hematology & Oncology (MD) in Caguas, Puerto Rico, trained at University of Puerto Rico School of Medicine (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $4,526,647 for 1,867 claims, against $21,699 paid for services in 2024. Pbg Puerto Rico LLC was the largest of 8 companies reporting payments in 2025, $287.94 in all, mostly food and beverage.
Overview
| NPI | 1003251224 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 1, 2013 |
| Last updated in NPPES | Mar 1, 2022 |
| Certified by provider | Mar 1, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 19086 | PR |
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 - Hematology/Oncology (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 51 |
|---|---|
| Services billed | 620 across 20 procedure codes |
| Paid by Medicare | $21,699 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,867 · 2,012 30-day fills |
|---|---|
| Patients | 228 |
| Total drug cost | $4,526,647 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | University of Puerto Rico School of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- Doctors' Center BayamonBayamon, PR
- Hospital Centro Comprensivo del CancerSan Juan, PR
- Hospital Menonita Caguas IncCaguas, PR
- Presbyterian Community HospitalSan Juan, PR
- Professional Hospital Guaynabo IncGuaynabo, PR
Industry payments (Open Payments)
- 2025$287.94 · 13 payments from 8 companies
- 2024$1,561 · 75 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pbg Puerto Rico LLC | $74.57 | 3 |
| Merck Sharp & Dohme LLC | $63.73 | 3 |
| Janssen Pharmaceuticals, Inc | $34.94 | 2 |
| Bayer Puerto Rico Inc. | $25.14 | 1 |
| Sobi, Inc | $25.00 | 1 |
What the 2025 payments were for
- Food and Beverage$287.94 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Hematology & Oncology providers in Caguas
- 1740313782
- 1144558867
- 1205862125
- 1265564694
- 1730348384
- 1659398949
- 1891731675
- 1629357488
- 1861541914
- 1982736146
All Internal Medicine, Hematology & Oncology providers in Puerto Rico →