Wonhee Woo
Internal Medicine Physician · San Jose, CA
Wonhee Woo is an internal medicine physician with a practice address in San Jose, California, and NPI 1851824817, issued on Apr 6, 2017. Check the license (California A170228, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Wonhee Woo
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A170228 CA
Self-reported in NPPES; status is on the state search - Practice location
- 270 International Cir, San Jose, CA 95119
- Phone
- (408) 972-3380
- Enumerated
- Apr 6, 2017
- Record last updated
- Aug 8, 2022
- Medicare enrollment
- Enrolled (PECOS I20230414001629); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 2017
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 270 International Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Wonhee Woo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A170228Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
321 Medicare Part D claims for 107 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Ipratropium Bromide85 claims
- Azelastine Hcl65 claims
- Fluticasone Propionate40 claims
- Breyna32 claims
- Spiriva Respimat18 claims
- Albuterol Sulfate Hfa17 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 IncSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Wonhee Woo among 17,696 internal medicine physician records in California
Wonhee Woo is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
428 internal medicine physician records list a practice address in San Jose
They are 428 of the 20,925 NPPES records with a practice address in San Jose, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Jose → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Monte Bernstein, M.D.San Jose, CA 951191730262593
- Jagpreet Bhatia, MDSan Jose, CA 951191205912722
- Malathi Charlu, MDSan Jose, CA 951191316023815
- Cornelia Chin, MDSan Jose, CA 951191104902634
- Monica Delzeit, M.D.San Jose, CA 951191912005349
- Sony Haris, MDSan Jose, CA 951191750467288
- Denley Jang, M.D.San Jose, CA 951191659479970
- John Kabahit, DOSan Jose, CA 951191073699583
Common questions
What is Wonhee Woo's NPI number?
Wonhee Woo's National Provider Identifier (NPI) is 1851824817, issued on Apr 6, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Wonhee Woo located?
The NPPES record lists a practice address at 270 International Cir, San Jose, CA, 95119. Phone: (408) 972-3380. Providers update this record themselves, so call before visiting.
How can I verify Wonhee Woo's license?
NPPES lists California license number A170228, 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 Wonhee Woo prescribe under Medicare Part D?
In 2024, Wonhee Woo had 321 Medicare Part D claims for 107 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.