Alexandra Duke, D.O
Family Medicine Physician · Brea, CA
Alexandra Duke, D.O is a family medicine physician with a practice address in Brea, California, and NPI 1760479992, issued on Oct 3, 2005. Check the license (California 20A5708, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alexandra Duke
- Credential
- D.O
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A5708 CA
Self-reported in NPPES; status is on the state search - Practice location
- 955 W Imperial Hwy Ste 110, Brea, CA 92821
- Phone
- (714) 449-6900
- Enumerated
- Oct 3, 2005
- Record last updated
- Oct 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 955 W Imperial Hwy Ste 110
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mariam Ali, DOFamily Medicine Physician1689243321
- Fouzia Asif, MDFamily Medicine Physician1518194612
- Susan Cocke, MDAllergy Physician1861540775
- Anne Ford, MDFamily Medicine Physician1518967140
- Patricia Gandasetiawan, PA-CPhysician Assistant1609361252
- Mark Giglio, MDFamily Medicine Physician1134129182
Verify Alexandra Duke in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A5708Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average family medicine physician in 2024
8,184 Medicare Part D claims for 546 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 125 claims were for opioids.
Most prescribed
- Atorvastatin Calcium570 claims
- Levothyroxine Sodium505 claims
- Amlodipine Besylate272 claims
- Omeprazole224 claims
- Losartan Potassium192 claims
- Gabapentin191 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.
Alexandra Duke among 17,133 family medicine physician records in California
Alexandra Duke, D.O is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- 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 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 family medicine physician records list a practice address in Brea
They are 48 of the 1,052 NPPES records with a practice address in Brea, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Brea → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Anne Ford, MDBrea, CA 928211518967140
- Mark Giglio, MDBrea, CA 928211134129182
- Royce Hutain, M.D.Brea, CA 928211104894286
- Christian Lising, M.D.Brea, CA 928211760478606
- Marlene Mires, MDBrea, CA 928211235185976
- John Mitchell, M.D.Brea, CA 928211225024912
- Andrew Morrison, MDBrea, CA 928211750382628
- Bruce Mutter, MDBrea, CA 928211861493736
Common questions
What is Alexandra Duke, D.O's NPI number?
Alexandra Duke, D.O's National Provider Identifier (NPI) is 1760479992, issued on Oct 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Alexandra Duke, D.O located?
The NPPES record lists a practice address at 955 W Imperial Hwy Ste 110, Brea, CA, 92821. Phone: (714) 449-6900. Providers update this record themselves, so call before visiting.
How can I verify Alexandra Duke, D.O's license?
NPPES lists California license number 20A5708, 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 Alexandra Duke, D.O prescribe under Medicare Part D?
In 2024, Alexandra Duke, D.O had 8,184 Medicare Part D claims for 546 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.