Regan M. Yau, MD
Internal Medicine Physician · Milpitas, CA
Regan M. Yau, MD is an internal medicine physician with a practice address in Milpitas, California, and NPI 1114006244, issued on Nov 2, 2006. Check the license (California A78987, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Regan M. Yau
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A78987 CA
Self-reported in NPPES; status is on the state search - Practice location
- 770 E Calaveras Blvd, Milpitas, CA 95035
- Phone
- (650) 945-2900
- Enumerated
- Nov 2, 2006
- Record last updated
- Dec 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20031211001159); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 770 E Calaveras Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Regan M. Yau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A78987Check 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% more Medicare Part D claims than the average internal medicine physician in 2024
6,037 Medicare Part D claims for 617 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 122 claims were for opioids.
Most prescribed
- Atorvastatin Calcium580 claims
- Amlodipine Besylate354 claims
- Losartan Potassium303 claims
- Lisinopril259 claims
- Simvastatin199 claims
- Fluticasone Propionate178 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 IncSanta Clara, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Regan M. Yau among 17,696 internal medicine physician records in California
Regan M. Yau, MD 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2000 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
41 internal medicine physician records list a practice address in Milpitas
They are 41 of the 878 NPPES records with a practice address in Milpitas, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Milpitas → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mayssoun Alhariri, MDMilpitas, CA 950351427135375
- Tina Cheng, MDMilpitas, CA 950351548347479
- Audrey Ellis, MDMilpitas, CA 950351629155577
- Kamal Hijazi, MDMilpitas, CA 950351558448480
- Thuy Huynh, MDMilpitas, CA 950351982711495
- Jayashree Joshi, M.D.Milpitas, CA 950351720066426
- Bill Jue, MDMilpitas, CA 950351902983844
- Richard Luu, MDMilpitas, CA 950351316024250
Common questions
What is Regan M. Yau, MD's NPI number?
Regan M. Yau, MD's National Provider Identifier (NPI) is 1114006244, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Regan M. Yau, MD located?
The NPPES record lists a practice address at 770 E Calaveras Blvd, Milpitas, CA, 95035. Phone: (650) 945-2900. Providers update this record themselves, so call before visiting.
How can I verify Regan M. Yau, MD's license?
NPPES lists California license number A78987, 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 Regan M. Yau, MD prescribe under Medicare Part D?
In 2024, Regan M. Yau, MD had 6,037 Medicare Part D claims for 617 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.