Nan Cheng, MD
Opted out of Medicare from May 2026 to May 2028. Psychiatry & Neurology, Neurology (MD) in Orange, California, trained at University of Maryland School of Medicine (class of 2019). In 2024 Medicare paid $46,347 for 95 patients, and Part D covered 160 of their prescriptions, 88% of them generic. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $6,365 in all, mostly consulting fees.
Overview
| NPI | 1235795774 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 9, 2019 |
| Last updated in NPPES | Apr 17, 2026 |
| Certified by provider | Apr 17, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | A182479 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out May 27, 2026 – May 27, 2028 |
| Can order and refer | Yes |
| Accepts assignment | Yes (participating) |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Medicare services in 2024
| Medicare patients | 95 |
|---|---|
| Services billed | 6,704 across 20 procedure codes |
| Paid by Medicare | $46,347 |
Part D prescriptions in 2024
| Prescriptions (claims) | 160 · 229 30-day fills |
|---|---|
| Patients | 41 |
| Total drug cost | $21,622 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Maryland School of Medicine |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Hospital affiliation
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$6,365 · 21 payments from 4 companies
- 2024$213.26 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $4,155 | 8 |
| Ipsen Innovation | $1,647 | 5 |
| Pfizer Inc. | $451.27 | 7 |
| Lifenet Health | $111.57 | 1 |
What the 2025 payments were for
- Consulting Fee$3,900 · 3 payments
- Travel and Lodging$1,344 · 4 payments
- Food and Beverage$1,121 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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