Michael Y. Chan, DDS
NPI 1477638518ActiveIndividual· Dentist, Oral and Maxillofacial Surgery· San Francisco, CA
Opted out of Medicare from June 2017 to June 2027. Dentist, Oral and Maxillofacial Surgery (DDS) in San Francisco, California, licensed in CA, with an NPI issued in October 2006. Part D covered 317 prescriptions written in 2024, 100% of them generic. Keystone Dental Inc. was the largest of 2 companies reporting payments in 2025, $571.62 in all, mostly entertainment.
Overview
| NPI | 1477638518 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DDS |
| Sole proprietor | Yes |
| NPI issued | Oct 26, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, Oral and Maxillofacial Surgery Primary | 1223S0112X | 47599 | CA |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Jun 7, 2017 – Jun 7, 2027 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Part D prescriptions in 2024
| Prescriptions (claims) | 317 · 317 30-day fills |
|---|---|
| Patients | 102 |
| Total drug cost | $1,516 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$571.62 · 8 payments from 2 companies
- 2024$59.50 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Keystone Dental Inc. | $402.95 | 3 |
| Straumann USA LLC | $168.67 | 5 |
What the 2025 payments were for
- Entertainment$402.95 · 3 payments
- Food and Beverage$168.67 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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