Onechang William Lee, MD - Medicare Neurosurgery in Fountain Valley, CA

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Onechang William Lee, MD is a medicare enrolled "Neurological Surgery" physician in Fountain Valley, California. He went to Albany Medical College Of Union University and graduated in 2008 and has 18 years of diverse experience with area of expertise as Neurosurgery. He is a member of the group practice Tien T Nguyen M.d. Inc. and his current practice location is 11190 Warner Ave, Suite 305, Fountain Valley, California. You can reach out to his office (for appointments etc.) via phone at (714) 433-2000.

Onechang William Lee is licensed to practice in California (license number A143259) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1881838662.

Contact Information

Onechang William Lee, MD
11190 Warner Ave, Suite 305,
Fountain Valley, CA 92708-4019
(714) 433-2000
Not Available

Map and Direction




Physician's Profile

Full NameOnechang William Lee
GenderMale
SpecialityNeurosurgery
Experience18 Years
Location11190 Warner Ave, Fountain Valley, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Onechang William Lee attended and graduated from Albany Medical College Of Union University in 2008
  NPI Data:
  • NPI Number: 1881838662
  • Provider Enumeration Date: 04/24/2009
  • Last Update Date: 10/21/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 8820219876
  • Enrollment ID: I20161109001319

Medical Identifiers

Medical identifiers for Onechang William Lee such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1881838662NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207T00000XNeurological Surgery 125-055125 (Illinois)Secondary
207T00000XNeurological Surgery A143259 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Memorialcare Orange Coast Medical CenterFountain valley, CAHospital
Orange County Global Medical CenterSanta ana, CAHospital
University Of California Irvine Medical CenterOrange, CAHospital
Memorialcare Saddleback Medical CenterLaguna hills, CAHospital
Fountain Valley Regional Hospital & Medical CenterFountain valley, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Tien T Nguyen M.d. Inc.00423181314

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Onechang William Lee allows following entities to bill medicare on his behalf.
Entity NameTien T Nguyen M.d. Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063534204
PECOS PAC ID: 0042318131
Enrollment ID: O20070613000679

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Onechang William Lee is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Onechang William Lee, MD
11190 Warner Ave, Suite 305,
Fountain Valley, CA 92708-4019

Ph: (714) 433-2000		Onechang William Lee, MD
11190 Warner Ave, Suite 305,
Fountain Valley, CA 92708-4019

Ph: (714) 433-2000

Reviews and Comments


Neurological Surgery Doctors in Fountain Valley, CA

Devin K Binder, MD
Neurological Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 9940 Talbert Ave, Suite 201, Fountain Valley, CA 92708
Phone: 949-829-2378    Fax: 714-769-6121

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.