Physician Profile
Unclaimed ProfileAbout KWOK
Ester Kwok, MD practices internal medicine in Los Gatos, CA. Ester is a 1989 graduate of University of Texas Medical School at Houston. According to Medicare claims data, Ester cared for 615 Medicare patients across 795 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
- (408) 374-1112
- Email not available
Practice Locations
320 DARDANELLI LN STE 27B
Los Gatos, CA 95032
Procedures Most Often Billed to Medicare
795 services · 615 patients · 9 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
25 |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
14 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
365 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
177 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
116 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
34 |
| Administration of pneumococcal vaccine | Billing code | G0009 |
25 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
24 |
| Administration of influenza virus vaccine | Billing code | G0008 |
15 |
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 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
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 — 31 related providers in 4 groups
Other internal medicines in Los Gatos 7
Same specialty, same city.
Trained at University of Texas Medical School at Houston 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at University of Texas Medical School at Houston 8
Providers who graduated from the same medical school in the same year.
Also performs Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Kwok specialize in?
Dr. Kwok is an internal medicine in Los Gatos, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Kwok located?
Dr. Kwok is listed at 320 DARDANELLI LN STE 27B, Los Gatos, CA 95032. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Kwok's phone number?
The number on file is (408) 374-1112. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Kwok's NPI number?
Dr. Kwok's National Provider Identifier is 1790886034. 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. Kwok go to medical school?
Dr. Kwok attended University of Texas Medical School at Houston, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Kwok been practicing?
Dr. Kwok has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Kwok do most often?
According to Medicare billing data, Dr. Kwok provides treatments such as pneumococcal conjugate vaccine, 20 valent , for intramuscular use 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. Kwok confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Kwok. 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.