Cynthia Xiuguang Ma, MD
NPI 1104842400ActiveIndividual· Internal Medicine, Medical Oncology· Saint Louis, MO
Internal Medicine, Medical Oncology (MD) with Washington University, practicing in Saint Louis, Missouri. Their prescriptions cost Medicare Part D more than their services did: $1,682,507 for 811 claims, against $817,109 paid for services in 2024. Genentech USA, Inc. was the largest of 6 companies reporting payments in 2025, $9,894 in all, mostly consulting fees. Lists Barnes Jewish Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1104842400 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 14, 2006 |
| Last updated in NPPES | Apr 17, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 2005014011 | MO |
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 (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 225 |
|---|---|
| Services billed | 42,655 across 105 procedure codes |
| Paid by Medicare | $817,109 |
Part D prescriptions in 2024
| Prescriptions (claims) | 811 · 1,035 30-day fills |
|---|---|
| Patients | 94 |
| Total drug cost | $1,682,507 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Washington UniversitySaint Louis, MO · 3,029 clinicians
Hospital affiliations
- Barnes Jewish HospitalSaint Louis, MO
- Barnes-Jewish St Peters HospitalSaint Peters, MO
- Barnes-Jewish West County HospitalCreve Coeur, MO
- Memorial HospitalBelleville, IL
- Missouri Baptist Medical CenterSaint Louis, MO
Industry payments (Open Payments)
- 2025$9,894 · 21 payments from 6 companies
- 2024$3,209 · 14 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genentech USA, Inc. | $5,140 | 8 |
| Astrazeneca Uk Limited | $2,824 | 4 |
| Astrazeneca Pharmaceuticals LP | $958.67 | 5 |
| Eli Lilly and Company | $700.00 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $200.00 | 1 |
What the 2025 payments were for
- Consulting Fee$8,255 · 10 payments
- Food and Beverage$831.31 · 8 payments
- Travel and Lodging$808.16 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 112 medical oncologists in Saint Louis · All medical oncologists in Missouri