George Y. Chao, MD
Endocrinology, Diabetes & Metabolism Physician · Modesto, CA
George Y. Chao, MD is an endocrinology, diabetes & metabolism physician with a practice address in Modesto, California, and NPI 1548204506, issued on Jun 16, 2006. Check the license (California G62842, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- George Y. Chao
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- G62842 CA
Self-reported in NPPES; status is on the state search - Practice location
- 600 Coffee RD, Modesto, CA 95355
- Phone
- (209) 524-1211
- Enumerated
- Jun 16, 2006
- Record last updated
- Feb 8, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 00G628420 CA
- Medicare enrollment
- Enrolled (PECOS I20081217000577); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1982
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 600 Coffee RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify George Y. Chao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G62842Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.2 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
16,245 Medicare Part D claims for 1,356 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Atorvastatin Calcium1,613 claims
- Levothyroxine Sodium1,316 claims
- Ezetimibe1,238 claims
- Pioglitazone Hcl967 claims
- Jardiance830 claims
- Ozempic783 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.
Industry payments in 2024: $2,772.42
33 payments; by number, the most common kind was food and beverage; the largest payer was Beta Bionics, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Valley Medical FoundationSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
George Y. Chao among 1,131 endocrinology, diabetes & metabolism physician records in California
George Y. Chao, MD is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1982 · median 2003 among the 779 with a school on file
- Record last updated2012 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Modesto → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Wen Han, M.D.Modesto, CA 953551104020312
- Celina Hetnal, MDModesto, CA 953551831156389
- Nirali Patel, M.D.Modesto, CA 953551841256948
- Gurbaj Sahi, MDModesto, CA 953551235593005
- Amit Bhargava, MDModesto, CA 953561306096698
- Teresa Jacques, MDModesto, CA 953561831261650
- Deepthi Rimmalapudi, M.D.Modesto, CA 953561417308693
- Myet Mon ZinModesto, CA 953561912439563
Common questions
What is George Y. Chao, MD's NPI number?
George Y. Chao, MD's National Provider Identifier (NPI) is 1548204506, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is George Y. Chao, MD located?
The NPPES record lists a practice address at 600 Coffee RD, Modesto, CA, 95355. Phone: (209) 524-1211. Providers update this record themselves, so call before visiting.
How can I verify George Y. Chao, MD's license?
NPPES lists California license number G62842, 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 George Y. Chao, MD prescribe under Medicare Part D?
In 2024, George Y. Chao, MD had 16,245 Medicare Part D claims for 1,356 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.