Eunice Liu, D.O.
Internal Medicine Physician · Martinez, CA
Eunice Liu, D.O. is an internal medicine physician with a practice address in Martinez, California, and NPI 1851575310, issued on Dec 19, 2007. Check the license (California 20A 12683, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Eunice Liu
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A 12683 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Muir RD, Martinez, CA 94553
- Phone
- (925) 372-1669
- Enumerated
- Dec 19, 2007
- Record last updated
- Jan 20, 2022
- Medicare enrollment
- Enrolled (PECOS I20110331000648); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 2007
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 200 Muir RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Robert Anderson, MDInternal Medicine Physician1447338538
- May Antonio, PTPhysical Therapist1245553668
Verify Eunice Liu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A 12683Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% more Medicare Part D claims than the average internal medicine physician in 2024
4,626 Medicare Part D claims for 583 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. 181 claims were for opioids.
Most prescribed
- Atorvastatin Calcium346 claims
- Amlodipine Besylate178 claims
- Atenolol169 claims
- Levothyroxine Sodium169 claims
- Lisinopril156 claims
- Losartan Potassium143 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 IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eunice Liu among 17,696 internal medicine physician records in California
Eunice Liu, D.O. 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · 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).
48 internal medicine physician records list a practice address in Martinez
They are 48 of the 1,816 NPPES records with a practice address in Martinez, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Martinez → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Chapman, MDMartinez, CA 945531578548129
- George Chuang, DOMartinez, CA 945531235217324
- Jeremy Fish, MDMartinez, CA 945531952497943
- Thomas Gamsky, MDMartinez, CA 945531043296247
- Gerhard Heinrich, M.D.Martinez, CA 945531306828728
- Nancy Lazarus, M.D.Martinez, CA 945531073598223
- Sara Levin, MDMartinez, CA 945531184707853
- Brian O'Neill, M.D.Martinez, CA 945531366425985
Common questions
What is Eunice Liu, D.O.'s NPI number?
Eunice Liu, D.O.'s National Provider Identifier (NPI) is 1851575310, issued on Dec 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Eunice Liu, D.O. located?
The NPPES record lists a practice address at 200 Muir RD, Martinez, CA, 94553. Phone: (925) 372-1669. Providers update this record themselves, so call before visiting.
How can I verify Eunice Liu, D.O.'s license?
NPPES lists California license number 20A 12683, 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 Eunice Liu, D.O. prescribe under Medicare Part D?
In 2024, Eunice Liu, D.O. had 4,626 Medicare Part D claims for 583 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.