Monique Chang, M.D.
NPI 1255381653ActiveIndividual· Internal Medicine, Hematology & Oncology· Mesa, AZ
Internal Medicine, Hematology & Oncology (M.D.) in Mesa, Arizona, trained at Icahn School of Medicine at Mount Sinai (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $3,438,131 for 1,756 claims, against $1,449,975 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 56 companies reporting payments in 2025, $4,753 in all, mostly food and beverage.
Overview
| NPI | 1255381653 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 10, 2006 |
| Last updated in NPPES | Nov 16, 2022 |
| Certified by provider | Nov 16, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 35265 | AZ |
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 - Hematology/Oncology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 533 |
|---|---|
| Services billed | 142,939 across 97 procedure codes |
| Paid by Medicare | $1,449,975 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,756 · 3,490 30-day fills |
|---|---|
| Patients | 397 |
| Total drug cost | $3,438,131 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Ironwood Physicians PCChandler, AZ · 116 clinicians
Hospital affiliations
- Banner Baywood Medical CenterMesa, AZ
- Banner Gateway Medical CenterGilbert, AZ
- Chandler Regional Medical CenterChandler, AZ
- Honorhealth Four Peaks Medical CenterMesa, AZ
- Mercy Gilbert Medical CenterGilbert, AZ
Industry payments (Open Payments)
- 2025$4,753 · 204 payments from 56 companies
- 2024$3,985 · 178 payments from 37 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $707.30 | 28 |
| Janssen Biotech, Inc. | $481.53 | 23 |
| Novartis Pharmaceuticals Corporation | $319.63 | 15 |
| Merck Sharp & Dohme LLC | $264.56 | 13 |
| Daiichi Sankyo Inc. | $261.47 | 10 |
What the 2025 payments were for
- Food and Beverage$4,546 · 201 payments
- Education$207.08 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 29 hematologist-oncologists in Mesa · All hematologist-oncologists in Arizona