Dai Chihara, MD, PHD
NPI 1720442643ActiveIndividual· Internal Medicine, Medical Oncology· Houston, TX
Internal Medicine, Medical Oncology (MD, PHD) with Physicians Referral Service, practicing in Houston, Texas. Their prescriptions cost Medicare Part D more than their services did: $418,748 for 339 claims, against $84,433 paid for services in 2024. Adc Therapeutics America, Inc. was the largest of 11 companies reporting payments in 2025, $28,276 in all, mostly consulting fees.
Overview
| NPI | 1720442643 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Apr 6, 2016 |
| Last updated in NPPES | Aug 10, 2026 |
| Certified by provider | Aug 10, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | S7025 | TX |
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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 260 |
|---|---|
| Services billed | 829 across 15 procedure codes |
| Paid by Medicare | $84,433 |
Part D prescriptions in 2024
| Prescriptions (claims) | 339 · 385 30-day fills |
|---|---|
| Patients | 86 |
| Total drug cost | $418,748 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Physicians Referral ServiceHouston, TX · 2,765 clinicians
Industry payments (Open Payments)
- 2025$28,276 · 43 payments from 11 companies
- 2024$25,016 · 15 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Adc Therapeutics America, Inc. | $11,981 | 13 |
| Genmab U.S., Inc. | $7,839 | 13 |
| Regeneron Pharmaceuticals, Inc. | $3,228 | 5 |
| Tanabe Pharma Corporation | $2,445 | 1 |
| Incyte Corporation | $2,225 | 3 |
What the 2025 payments were for
- Consulting Fee$13,793 · 6 payments
- Honoraria$10,500 · 1 payment
- Travel and Lodging$2,234 · 8 payments
- Food and Beverage$1,749 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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