ONECHANG WILLIAM LEE M.D.
NPI 1881838662
Neurological Surgery in Fountain Valley, CA

Active since April 24, 2009PECOS EnrolledAccepts Medicare Assignment
11190 WARNER AVE, SUITE 305, FOUNTAIN VALLEY, CA 92708(714) 433-2000 Get Directions Write a Review

NPPES record last updated: October 21, 2016. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Onechang William Lee M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ONECHANG WILLIAM LEE M.D. (NPI 1881838662) is an individual neurological surgery provider in Fountain Valley, California, licensed in California (A143259) and active in the NPI registry since April 2009. He is enrolled in Medicare PECOS and is a graduate of Albany Medical College Of Union University (2008).

NPPES Registry Identity

NPI1881838662
Entity TypeIndividualMale
Primary Taxonomy207T00000X
Provider Legal NameONECHANG WILLIAM LEECredential: M.D.
Location Address11190 WARNER AVE, SUITE 305Fountain Valley, CA 92708-4019
Mailing Address11190 Warner Ave, Suite 305Fountain Valley, CA 92708-4019 · (714) 433-2000
Sole ProprietorYes
Medical School CMSAlbany Medical College Of Union UniversityGraduated 2008
Enumeration DateApril 24, 2009
Last NPPES UpdateOctober 21, 2016
NPI 1881838662 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
Licenses Licensed in CA · A143259 Licensed in IL · 125-055125
Definition

A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.

11190 WARNER AVE, Fountain Valley, CA 92708

Other Names 1

Former Name (1)One Chang Lee M.d.

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Onechang William Lee M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8820219876
PECOS Enrollment IDI20161109001319
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Follow-up hospital inpatient care per day, typically 35 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
195 services71 patients
Initial hospital inpatient care per day, typically 50 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
104 services100 patients
Established patient office or other outpatient visit, 30-39 minutes 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
43 services32 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
39 services22 patients
New patient office or other outpatient visit, 45-59 minutes 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
29 services29 patients
Follow-up hospital inpatient care per day, typically 25 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
23 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92708 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine (Hematology & Oncology)
11190 WARNER AVE, SUITE 401
FOUNTAIN VALLEY, CA 92708
Specialist
11190 WARNER AVE, SUITE 411
FOUNTAIN VALLEY, CA 92708
Radiology (Radiation Oncology)
11190 WARNER AVE, SUITE 115
FOUNTAIN VALLEY, CA 92708
Pediatrics (Pediatric Hematology-Oncology)
11190 WARNER AVE, SUITE 307
FOUNTAIN VALLEY, CA 92708
Internal Medicine (Hematology & Oncology)
11190 WARNER AVE
FOUNTAIN VALLEY, CA 92708
Pharmacy (Community/Retail Pharmacy)
11190 WARNER AVE, SUITE 111
FOUNTAIN VALLEY, CA 92708
Specialist
11190 WARNER AVE, SUITE 408
FOUNTAIN VALLEY, CA 92708
Psychologist (Prescribing (Medical))
11190 WARNER AVE, STE 411
FOUNTAIN VALLEY, CA 92708

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Onechang Lee's NPI number?

The NPI number for Onechang Lee is 1881838662. It was assigned to this individual provider in the NPPES registry on April 24, 2009.

Where is Onechang Lee located?

Onechang Lee practices at 11190 Warner Ave Suite 305, Fountain Valley, CA 92708. The listed phone number is (714) 433-2000.

What is Onechang Lee's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is Onechang Lee enrolled in Medicare?

Yes. Onechang Lee is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Onechang Lee was last updated on October 21, 2016. NPI Profile syncs with the weekly NPPES data releases published by CMS.