I-Yeh Gong, M.D.
Hematology & Oncology Physician · Sacramento, CA
I-Yeh Gong, M.D. is a hematology & oncology physician with a practice address in Sacramento, California, and NPI 1851493373, issued on Sep 4, 2006. Check the license (California A69062, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- I-Yeh Gong
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A69062 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4501 X St, Sacramento, CA 95817
- Phone
- (916) 734-3771
- Enumerated
- Sep 4, 2006
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A690620 CA
- Medicare enrollment
- Enrolled (PECOS I20050531000690); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 4501 X St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristine Ahlberg, RNOncology Registered Nurse1982086567
- Danielle Baham, RDRegistered Dietitian1427533249
- Cheryl Breed, NPNurse Practitioner1760408959
- Laura Brennan, F.N.PFamily Nurse Practitioner1235389826
- Radha CanepaInternal Medicine Physician1760767511
- Sally Denardo, M.D.Internal Medicine Physician1568447878
Verify I-Yeh Gong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A69062Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average hematology & oncology physician in 2024
915 Medicare Part D claims for 164 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 70 claims were for opioids.
Most prescribed
- Prochlorperazine Maleate110 claims
- Lidocaine-Prilocaine96 claims
- Prednisone91 claims
- Nivestym78 claims
- Imatinib Mesylate53 claims
- Abiraterone Acetate45 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 IncSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
I-Yeh Gong among 1,583 hematology & oncology physician records in California
I-Yeh Gong, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 54% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1997 · median 2003 among the 1,124 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Sacramento → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Mehrad Abedi, M.D.Sacramento, CA 958171467459222
- Helen Chew, M.D.Sacramento, CA 958171801870142
- David Gandara, M.D.Sacramento, CA 958171528042587
- Richard Guy, M.D.Sacramento, CA 958171578545190
- Kit Lam, M.D., PH.D.Sacramento, CA 958171306829577
- Primo Lara, M.D.Sacramento, CA 958171972585743
- Derick Lau, M.D., PH.D.Sacramento, CA 958171801879077
- Robert O'Donnell, M.D., PH.D.Sacramento, CA 958171386627586
Common questions
What is I-Yeh Gong, M.D.'s NPI number?
I-Yeh Gong, M.D.'s National Provider Identifier (NPI) is 1851493373, issued on Sep 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is I-Yeh Gong, M.D. located?
The NPPES record lists a practice address at 4501 X St, Sacramento, CA, 95817. Phone: (916) 734-3771. Providers update this record themselves, so call before visiting.
How can I verify I-Yeh Gong, M.D.'s license?
NPPES lists California license number A69062, 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 I-Yeh Gong, M.D. prescribe under Medicare Part D?
In 2024, I-Yeh Gong, M.D. had 915 Medicare Part D claims for 164 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.