Gwendolyn Hanh Ho, MD
Hematology (Internal Medicine) Physician · San Jose, CA
Gwendolyn Hanh Ho, MD is a hematology (internal medicine) physician with a practice address in San Jose, California, and NPI 1487970547, issued on Apr 14, 2010. Check the license (California A118908, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gwendolyn Hanh Ho
- Credential
- MD
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- A118908 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2589 Samaritan Dr, San Jose, CA 95124
- Phone
- (408) 426-4900
- Enumerated
- Apr 14, 2010
- Record last updated
- Jan 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20130614000032); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 175 in California → Look up another NPI →
Also registered at 2589 Samaritan Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- George Labban, M.D.Medical Oncology Physician1114925542
Verify Gwendolyn Hanh Ho in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A118908Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
448 Medicare Part D claims for 100 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 25 claims were for opioids.
Most prescribed
- Prednisone41 claims
- Abiraterone Acetate38 claims
- Hydroxyurea32 claims
- Ondansetron Odt26 claims
- Brukinsa24 claims
- Letrozole23 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.
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Gwendolyn Hanh Ho among 175 hematology (internal medicine) physician records in California
Gwendolyn Hanh Ho, MD is one of 175 hematology (internal medicine) physician records with a practice address in California. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 62% of them.
- NPI issued2010 · 62% of these records are older, 34% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated2010 · median 2006 among the 135 with a school on file
- Record last updated2025 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology (Internal Medicine) Physician providers in California
There are 175 hematology (internal medicine) physician records in California.
All 175 in California → Every provider in San Jose → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Leon Rabinowitz, M.D.San Jose, CA 951241326050758
- David Loftus, M.D.San Jose, CA 951281922315951
- Margaret Krackeler, MDSan Jose, CA 951191427685882
- James Poth, MDSanta Cruz, CA 950601053328575
- Mervyn Sahud, M.D.Oakland, CA 946121174806111
- Daniel CoreyOakland, CA 946021457518318
- Irene Dy, MDCastro Valley, CA 945461528393063
- Nitin Joshi, M.D.Castro Valley, CA 945461154541423
Common questions
What is Gwendolyn Hanh Ho, MD's NPI number?
Gwendolyn Hanh Ho, MD's National Provider Identifier (NPI) is 1487970547, issued on Apr 14, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Gwendolyn Hanh Ho, MD located?
The NPPES record lists a practice address at 2589 Samaritan Dr, San Jose, CA, 95124. Phone: (408) 426-4900. Providers update this record themselves, so call before visiting.
How can I verify Gwendolyn Hanh Ho, MD's license?
NPPES lists California license number A118908, 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 Gwendolyn Hanh Ho, MD prescribe under Medicare Part D?
In 2024, Gwendolyn Hanh Ho, MD had 448 Medicare Part D claims for 100 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. 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.