1. Home
  2. Directory
  3. Illinois
  4. Arlington Heights
  5. Psychiatry Neurology
  6. NPI Profile

ALEXANDER CHAN-HAN OU MD
NPI 1649666256
Psychiatry & Neurology - Neurology in Arlington Heights, IL

Active since April 09, 2015PECOS EnrolledAccepts Medicare Assignment
880 W CENTRAL RD STE 7200, ARLINGTON HEIGHTS, IL 60005(847) 618-4430 Get Directions Write a Review

NPPES record last updated: May 29, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 6, 2022, Dec 7, 2020, Mar 10, 2020 (3 updates tracked since 2020).

About Alexander Chan-han Ou Md NPPES

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

ALEXANDER CHAN-HAN OU MD (NPI 1649666256) is an individual neurology provider in Arlington Heights, Illinois, licensed in Illinois (036170404) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Northwest Community Hospital 1, and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1649666256
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameALEXANDER CHAN-HAN OUCredential: MD
Location Address880 W CENTRAL RD STE 7200Arlington Heights, IL 60005-2382
Mailing Address880 W Central Rd Ste 7200Arlington Heights, IL 60005-2382 · (847) 618-4430
Phone(847) 618-4430
Sole ProprietorNo
Medical School CMSNew York Medical CollegeGraduated 2015
Enumeration DateApril 9, 2015
Last NPPES UpdateMay 29, 20243 updates tracked since enumeration
NPPES CertifiedMay 29, 2024
✔ NPI 1649666256 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
Licenses✔ Licensed in IL · 036170404✔ Licensed in TX · S8226
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
880 W CENTRAL RD STE 7200, Arlington Heights, IL 60005
Open in Google Maps ↗

Secondary Practice Locations 4

Location 1500 W Medical Center BlvdWebster, TX 77598-4220 · Phone (251) 128-1332
Location 22515 Business Center DrPearland, TX 77584-2294 · Phone (713) 442-7200
Location 31010 S Ponds DrWebster, TX 77598-1409 · Phone (713) 442-4300
Location 45001 E Sam Houston Pkwy SPasadena, TX 77505-3965 · Phone (713) 442-7100

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Alexander Chan-han Ou Md 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 ID5092135558
PECOS Enrollment IDI20240610001284
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Alexander Ou reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Endeavor Health Medical Group
16 mi
Allergy & Immunology
1000 CENTRAL ST
Evanston, IL 60201
  • Reassigned Medicare billing, Illinois enrollment
  • 4,841 clinicians in this Medicare group
NPI 1497701882 (847) 570-5235
Kelsey-Seybold Medical Group, PLLC
948 mi
Multi-Specialty
2727 W HOLCOMBE BLVD
Houston, TX 77025
  • Reassigned Medicare billing, Texas enrollment
  • 1,649 clinicians in this Medicare group
NPI 1013915255 (713) 442-0000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northwest Community Hospital 1

Acute Care Hospitals · Arlington Heights, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140252
Location800 W Central RoadArlington Heights, IL 60005 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60005 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
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
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.

DR. ASADULLAH KHAN M.D.
Internal Medicine (Hematology & Oncology)
880 W CENTRAL RD STE 7200
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 618-4430
DR. ABDULLAH ALSAWAF M.D.
Psychiatry & Neurology (Neurology)
880 W CENTRAL RD STE 7200
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 618-4430
DR. BROOKE T JOHNSON D.O.
Psychiatry & Neurology (Neurology)
880 W CENTRAL RD STE 7200
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 618-4430
VIRGINIA WATSON PA-C
Physician Assistant (Surgical)
880 W CENTRAL RD STE 7200
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 618-4430
SOHA NADIM GHOSSAINI M.D.
Otolaryngology
880 W CENTRAL RD STE 7200
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 618-4430
NATASHA ELIZABETH POYLIN APN-CNP
Nurse Practitioner
880 W CENTRAL RD STE 7200
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 618-4430
BRIDGET R JOHNSON APN-CNP
Nurse Practitioner
880 W CENTRAL RD STE 7200
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 618-4430
ELLEN SONG MD
Psychiatry & Neurology (Neurology)
880 W CENTRAL RD STE 7200
ARLINGTON HEIGHTS, IL 60005
Cook County (847) 618-4430

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 Alexander Ou's NPI number?

The NPI number for Alexander Ou is 1649666256. It was assigned to this individual provider in the NPPES registry on April 9, 2015.

Where is Alexander Ou located?

Alexander Ou practices at 880 W Central Rd Ste 7200, Arlington Heights, IL 60005. The listed phone number is (847) 618-4430.

What is Alexander Ou's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Alexander Ou enrolled in Medicare?

Yes. Alexander Ou 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.

Which organizations bill Medicare for Alexander Ou's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Ou reassigns Medicare benefits to 2 organizations: Endeavor Health Medical Group (Evanston, IL) and Kelsey-Seybold Medical Group, PLLC (Houston, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Alexander Ou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alexander Ou accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Alexander Ou as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Alexander Ou affiliated with any hospitals?

According to CMS data, Alexander Ou is affiliated with Northwest Community Hospital 1.

When was this NPI record last updated?

The NPPES record for Alexander Ou was last updated on May 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.