Allen Houshiar, DO, MS
Family Medicine Physician · Orange, CA
Allen Houshiar, DO, MS is a family medicine physician with a practice address in Orange, California, and NPI 1427076272, issued on Jul 18, 2006. Check the license (California 20A8021, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allen Houshiar
- Credential
- DO, MS
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A8021 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2501 E Chapman Ave, Orange, CA 92869
- Phone
- (714) 628-3300
- Enumerated
- Jul 18, 2006
- Record last updated
- Oct 21, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040330001736); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2501 E Chapman Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Allen Houshiar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A8021Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average family medicine physician in 2024
1,971 Medicare Part D claims for 1,000 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 38 claims were for opioids.
Most prescribed
- Doxycycline Hyclate212 claims
- Azithromycin176 claims
- Amoxicillin-Clavulanate Potass151 claims
- Cefdinir133 claims
- Cephalexin116 claims
- Prednisone104 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 2 group practices
- Laguna Beach Urgent Care IncLaguna Beach, CA
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allen Houshiar among 17,133 family medicine physician records in California
Allen Houshiar, DO, MS 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2000 · median 2005 among the 10,652 with a school on file
- Record last updated2020 · 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).
106 family medicine physician records list a practice address in Orange
They are 106 of the 13,245 NPPES records with a practice address in Orange, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Orange → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Nicole Awad, M.D.Orange, CA 928691295821189
- Robert Budman, MDOrange, CA 928691598725814
- Alex Dariushnia, M.D.Orange, CA 928691336243385
- Semira Dariushnia, M.D.Orange, CA 928691184725053
- Linda Haase, FNPOrange, CA 928691699867242
- Steven Joe, D.O.Orange, CA 928691649366410
- Virany Kreng, M.D.Orange, CA 928691891881660
- John Luster, MDOrange, CA 928691982796439
Common questions
What is Allen Houshiar, DO, MS's NPI number?
Allen Houshiar, DO, MS's National Provider Identifier (NPI) is 1427076272, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Allen Houshiar, DO, MS located?
The NPPES record lists a practice address at 2501 E Chapman Ave, Orange, CA, 92869. Phone: (714) 628-3300. Providers update this record themselves, so call before visiting.
How can I verify Allen Houshiar, DO, MS's license?
NPPES lists California license number 20A8021, 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 Allen Houshiar, DO, MS prescribe under Medicare Part D?
In 2024, Allen Houshiar, DO, MS had 1,971 Medicare Part D claims for 1,000 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.