Erin Siobhan O'Hara, D.O.
Family Medicine Physician · Wilmington, CA
Erin Siobhan O'Hara, D.O. is a family medicine physician with a practice address in Wilmington, California, and NPI 1871882266, issued on Apr 6, 2011. Check the license (California 20A11698, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Erin Siobhan O'Hara
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 20A11698 CA
11698 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 E Anaheim St, Wilmington, CA 90744
- Phone
- (310) 522-8700
- Enumerated
- Apr 6, 2011
- Record last updated
- Jun 12, 2025
- Fax
- (949) 791-3114
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 200 E Anaheim St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kayla MacapagalPhysician Assistant1245001700
Verify Erin Siobhan O'Hara in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11698Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
24 Medicare Part D claims for 22 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Erin Siobhan O'Hara among 17,133 family medicine physician records in California
Erin Siobhan O'Hara, 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 2011, is newer than 63% of them.
- NPI issued2011 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2025 · 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).
18 family medicine physician records list a practice address in Wilmington
They are 18 of the 267 NPPES records with a practice address in Wilmington, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Wilmington → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Michelle Ababa, MDWilmington, CA 907441710922513
- George Cheng, D.O.Wilmington, CA 907441770621641
- Asia Delatorre, MDWilmington, CA 907441598105132
- Mauricio Flores, M.D.Wilmington, CA 907441134156896
- Gilberto Granados, M.D.Wilmington, CA 907441811926280
- Jesus Gutierrez, M.D.Wilmington, CA 907441083643456
- Fantaye Merid, M.D.Wilmington, CA 907441104012921
- Ehsan Montazeri, MDWilmington, CA 907441417038258
Common questions
What is Erin Siobhan O'Hara, D.O.'s NPI number?
Erin Siobhan O'Hara, D.O.'s National Provider Identifier (NPI) is 1871882266, issued on Apr 6, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Erin Siobhan O'Hara, D.O. located?
The NPPES record lists a practice address at 200 E Anaheim St, Wilmington, CA, 90744. Phone: (310) 522-8700. Providers update this record themselves, so call before visiting.
How can I verify Erin Siobhan O'Hara, D.O.'s license?
NPPES lists California license number 20A11698, 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 Erin Siobhan O'Hara, D.O. prescribe under Medicare Part D?
In 2024, Erin Siobhan O'Hara, D.O. had 24 Medicare Part D claims for 22 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.