Robert T. Kwak, M.D.
Emergency Medicine Physician · Pleasanton, CA
Robert T. Kwak, M.D. is an emergency medicine physician with a practice address in Pleasanton, California, and NPI 1588963243, issued on Mar 21, 2011. Check the license (California A127352, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert T. Kwak
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A127352 CA
Self-reported in NPPES; status is on the state search - Practice location
- PO Box 702, Pleasanton, CA 94566
- Phone
- (650) 799-6666
- Enumerated
- Mar 21, 2011
- Record last updated
- Jan 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20141001001159); accepts Medicare assignment
- Medical or professional school
- University Of Miami, Lm Miller School Of Medicine, 2011
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Verify Robert T. Kwak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A127352Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average emergency medicine physician in 2024
177 Medicare Part D claims for 89 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Ondansetron Odt19 claims
- Albuterol Sulfate Hfa13 claims
- Oxycodone Hcl13 claims
- Fluticasone Propionate11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncModesto, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert T. Kwak among 7,751 emergency medicine physician records in California
Robert T. Kwak, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 60% of them.
- NPI issued2011 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2011 · median 2011 among the 4,560 with a school on file
- Record last updated2022 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 emergency medicine physician records list a practice address in Pleasanton
They are 27 of the 2,213 NPPES records with a practice address in Pleasanton, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Pleasanton → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Herschel Fischer, M.D.Pleasanton, CA 945661588981005
- Amy Burkhart, MD, RDNapa, CA 945591467691576
- John Brazil, MDNapa, CA 945581801545900
- Robert Brown, MDNapa, CA 945581255372223
- Steven Cardey, MDNapa, CA 945581902847064
- Edwin Carlson, M.D.Saint Helena, CA 945741174507552
- Chuan-Jay Chen, MDSaint Helena, CA 945741205366457
- Dan Clay, M.D.Saint Helena, CA 945741033192547
Common questions
What is Robert T. Kwak, M.D.'s NPI number?
Robert T. Kwak, M.D.'s National Provider Identifier (NPI) is 1588963243, issued on Mar 21, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Robert T. Kwak, M.D. located?
The NPPES record lists a practice address at PO Box 702, Pleasanton, CA, 94566. Phone: (650) 799-6666. Providers update this record themselves, so call before visiting.
How can I verify Robert T. Kwak, M.D.'s license?
NPPES lists California license number A127352, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert T. Kwak, M.D. prescribe under Medicare Part D?
In 2024, Robert T. Kwak, M.D. had 177 Medicare Part D claims for 89 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.