John O. Lai, M.D.
NPI 1457398406ActiveIndividual· Internal Medicine· Daly City, CA
Internal Medicine (M.D.) in Daly City, California, trained at University of Kansas School of Med (Kc/Wich/Sal) (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $1,569,570 for 17,014 claims, against $99,956 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 30 companies reporting payments in 2025, $4,581 in all, mostly food and beverage.
Overview
| NPI | 1457398406 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 31, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G78359 | 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 | 336 |
|---|---|
| Services billed | 1,188 across 23 procedure codes |
| Paid by Medicare | $99,956 |
Part D prescriptions in 2024
| Prescriptions (claims) | 17,014 · 36,690 30-day fills |
|---|---|
| Patients | 1,136 |
| Total drug cost | $1,569,570 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Kansas School of Med (Kc/Wich/Sal) |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- John Lai and Kevin Wong Medical CorporationSan Francisco, CA · 2 clinicians
Hospital affiliations
- Ahmc Seton Medical CenterDaly City, CA
- California Pacific Medical Center - Mission BernalSan Francisco, CA
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA
- Peninsula Medical CenterBurlingame, CA
- UCSF Medical CenterSan Francisco, CA
Other facilities
- Anx Home HealthcareHome health agency · Burlingame, CA
- Bay Nation Home Health Services IncHome health agency · Newark, CA
- Centerwell Asian American Home HealthHome health agency · Alameda, CA
- Elite Care Home Health Agency, Inc.Home health agency · Burlingame, CA
- Healthflex Home Health ServicesHome health agency · Oakland, CA
- Golden Heights HealthcareNursing home · Daly City, CA
- Golden Pavilion HealthcareNursing home · Daly City, CA
Industry payments (Open Payments)
- 2025$4,581 · 196 payments from 30 companies
- 2024$5,454 · 231 payments from 31 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $1,001 | 42 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $478.08 | 21 |
| Novo Nordisk Inc | $353.63 | 19 |
| Lilly USA, LLC | $298.25 | 15 |
| Pfizer Inc. | $284.60 | 11 |
What the 2025 payments were for
- Food and Beverage$4,581 · 196 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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