Physician Profile
Unclaimed ProfileAbout LAI
John O Lai, M.D. is a healthcare provider in Daly City, CA specializing in internal medicine. John trained at University of Kansas School of Med (Kc/Wich/Sal), graduating in 1992. According to Medicare claims data, John cared for 690 Medicare patients across 1,140 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (650) 991-4463
- Email not available
Practice Locations
1500 SOUTHGATE AVE SUITE 115
Daly City, CA 94015
Procedures Most Often Billed to Medicare
1,140 services · 690 patients · 11 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Influenza vaccine, trivalent, 0.5 ml dosage | Treatment | 90658 |
33 |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
31 |
| Influenza vaccine, inactivated | Treatment | 90653 |
16 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
535 |
| Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more | Office visit | 99308 |
135 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
123 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
84 |
| Administration of influenza virus vaccine | Billing code | G0008 |
80 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
41 |
| Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | Billing code | G0180 |
40 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other internal medicines in Daly City 8
Same specialty, same city.
Trained at University of Kansas School of Med (Kc/Wich/Sal) 8
Other providers in the same specialty who trained at the same institution.
Class of 1992 at University of Kansas School of Med (Kc/Wich/Sal) 8
Providers who graduated from the same medical school in the same year.
Also performs Influenza vaccine, trivalent, 0.5 ml dosage 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Lai?
Dr. Lai is an internal medicine in Daly City, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Lai's address?
Dr. Lai is listed at 1500 SOUTHGATE AVE SUITE 115, Daly City, CA 94015. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Lai?
The number on file is (650) 991-4463. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Lai's NPI number?
Dr. Lai's National Provider Identifier is 1457398406. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Lai train?
Dr. Lai attended University of Kansas School of Med (Kc/Wich/Sal), graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Lai been practicing?
Dr. Lai has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Lai perform?
According to Medicare billing data, Dr. Lai provides treatments such as influenza vaccine, trivalent, 0.5 ml dosage and influenza vaccine split virus, preservative free, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Lai confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lai. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.