Helen Heng-Shan Moon, M.D.
NPI 1255480075ActiveIndividual· Internal Medicine, Hematology & Oncology· Pasadena, CA
Internal Medicine, Hematology & Oncology (M.D.) with Southern California Permanente Medical Group, practicing in Pasadena, California. Their prescriptions cost Medicare Part D more than their services did: $2,547,107 for 1,019 claims, against $45,265 paid for services in 2024. Emd Serono, Inc. was the largest of 8 companies reporting payments in 2025, $13,129 in all, mostly consulting fees. Lists Kaiser Foundation Hospital, Riverside as a hospital affiliation.
Overview
| NPI | 1255480075 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jan 10, 2007 |
| Last updated in NPPES | Nov 1, 2021 |
| Certified by provider | Nov 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A91007 | CA |
| Internal Medicine | 207R00000X | A91007 | CA |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 25 |
|---|---|
| Services billed | 5,111 across 52 procedure codes |
| Paid by Medicare | $45,265 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,019 · 1,773 30-day fills |
|---|---|
| Patients | 200 |
| Total drug cost | $2,547,107 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hematology/Oncology |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital, RiversideRiverside, CA
Industry payments (Open Payments)
- 2025$13,129 · 16 payments from 8 companies
- 2024$216.96 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Emd Serono, Inc. | $5,752 | 2 |
| Genentech USA, Inc. | $3,973 | 6 |
| Astellas Pharma US Inc | $2,437 | 2 |
| Daiichi Sankyo Inc. | $650.00 | 1 |
| Novartis Pharmaceuticals Corporation | $185.56 | 2 |
What the 2025 payments were for
- Consulting Fee$11,481 · 4 payments
- Travel and Lodging$1,181 · 5 payments
- Food and Beverage$467.17 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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