Alan Eih Chih Thong, MD
NPI 1689835738ActiveIndividual· Urology· Stanford, CA
Urology (MD) in Stanford, California, trained at University of Chicago, Pritzker School of Medicine (class of 2008). 605 Medicare patients in 2024, $175,183 paid; nearly all of their 235 Part D prescriptions were generic (97%). Intuitive Surgical, Inc. reported $7,442 in payments in 2025, mostly education.
Overview
| NPI | 1689835738 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 21, 2008 |
| Last updated in NPPES | Mar 13, 2024 |
| Certified by provider | Mar 13, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | A109039 | CA |
| Surgery | 208600000X | A109039 | CA |
| Urology | 208800000X | 274598 | NY |
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 - Urology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 605 |
|---|---|
| Services billed | 1,206 across 41 procedure codes |
| Paid by Medicare | $175,183 |
Part D prescriptions in 2024
| Prescriptions (claims) | 235 · 552 30-day fills |
|---|---|
| Patients | 72 |
| Total drug cost | $12,660 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Urology |
| Secondary specialties | General Surgery |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliations
- Eden Medical CenterCastro Valley, CA
- Stanford Health CareStanford, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Industry payments (Open Payments)
- 2025$7,442 · 14 payments from 1 company
- 2024$6,223 · 24 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $7,442 | 14 |
What the 2025 payments were for
- Education$4,000 · 1 payment
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$1,500 · 3 payments
- Travel and Lodging$1,336 · 6 payments
- Food and Beverage$605.90 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Urology providers in Stanford
- 1972689156
- 1811098197
- 1265443246
- 1447605068
- 1487141081
- 1043320005
- 1437594496
- 1013335512
- 1922537539
- 1205945920
- 1780657171
- 1679708705