Onechang William Lee, M.D.
Neurological Surgery Physician · Fountain Valley, CA
Onechang William Lee, M.D. is a neurological surgery physician with a practice address in Fountain Valley, California, and NPI 1881838662, issued on Apr 24, 2009. Check the license (California A143259, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Onechang William Lee
- Credential
- M.D.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License numbers
- A143259 CA
125-055125 IL
Self-reported in NPPES; status is on the state search - Practice location
- 11190 Warner Ave, Fountain Valley, CA 92708
- Phone
- (714) 433-2000
- Enumerated
- Apr 24, 2009
- Record last updated
- Oct 21, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161109001319); accepts Medicare assignment
- Medical or professional school
- Albany Medical College Of Union University, 2008
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 929 in California → Look up another NPI →
Also registered at 11190 Warner Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Onechang William Lee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A143259Check 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% fewer Medicare Part D claims than the average neurological surgery physician in 2024
17 Medicare Part D claims, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 12 claims were for opioids.
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.
Industry payments in 2024: $51.93
2 payments; by number, the most common kind was food and beverage; the largest payer was Orthofix Medical, Inc. The 5,377 providers of this specialty with any payment received $14,925.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Tien T Nguyen M.D. Inc.Fountain Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Onechang William Lee among 929 neurological surgery physician records in California
Onechang William Lee, M.D. is one of 929 neurological surgery physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 59% of them.
- NPI issued2009 · 59% of these records are older, 36% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2008 · median 2005 among the 612 with a school on file
- Record last updated2016 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in California
There are 929 neurological surgery physician records in California.
All 929 in California → Every provider in Fountain Valley → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Devin Binder, MDFountain Valley, CA 927081992804819
- Tien Nguyen, MDFountain Valley, CA 927081356385025
- Peyman TabriziSanta Ana, CA 927071154362499
- Bijan Zardouz, M.D.Santa Ana, CA 927071679621726
- Andrew Schreiber, MDSanta Ana, CA 927051679662852
- Keun-Young Kim, M.D.Mission Viejo, CA 926911659577286
- Chiedozie Nwagwu, MDMission Viejo, CA 926911669552808
- Sylvain Palmer, MDMission Viejo, CA 926911508971912
Common questions
What is Onechang William Lee, M.D.'s NPI number?
Onechang William Lee, M.D.'s National Provider Identifier (NPI) is 1881838662, issued on Apr 24, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Onechang William Lee, M.D. located?
The NPPES record lists a practice address at 11190 Warner Ave, Fountain Valley, CA, 92708. Phone: (714) 433-2000. Providers update this record themselves, so call before visiting.
How can I verify Onechang William Lee, M.D.'s license?
NPPES lists California license number A143259, 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 Onechang William Lee, M.D. prescribe under Medicare Part D?
In 2024, Onechang William Lee, M.D. had 17 Medicare Part D claims; the average among neurological surgery physician prescribers was 172. 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.