Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DAVID WEI OUYANG MD
NPI 1821043944
Obstetrics & Gynecology in Evanston, IL

Q: What is David Ouyang's NPI number?

The NPI number for David Ouyang is 1821043944. It was assigned to this individual provider in the NPPES registry on May 24, 2006.

Q: What is David Ouyang's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for David Ouyang was last updated on July 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 days 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.

Active since May 24, 2006PECOS Enrolled

2650 RIDGE AVE STE 1420, EVANSTON, IL 60201(847) 570-2860(847) 733-5087 Get Directions Write a Review

NPPES record last updated: July 30, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 30, 2026, Feb 10, 2021, Oct 30, 2020 (3 updates tracked since 2020).

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About David Wei Ouyang Md NPPES

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

DAVID WEI OUYANG MD (NPI 1821043944) is an individual obstetrics & gynecology provider in Evanston, Illinois, licensed in Illinois (036115621) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and is a graduate of University Of Minnesota Medical School (1999).

NPPES Registry Identity

NPI1821043944

Entity TypeIndividualMale

Primary Taxonomy207V00000X

Provider Legal NameDAVID WEI OUYANGCredential: MD

Location Address2650 RIDGE AVE STE 1420Evanston, IL 60201-1700

Mailing Address2650 Ridge Ave Ste 1223Evanston, IL 60201-1700 · (847) 570-2040

Phone(847) 570-2860

Fax(847) 733-5087

Sole ProprietorNo

Medical School CMSUniversity Of Minnesota Medical SchoolGraduated 1999

Enumeration DateMay 24, 2006

Last NPPES UpdateJuly 30, 20263 updates tracked since enumeration

NPPES CertifiedJuly 30, 2026

✔ NPI 1821043944 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

Licenses✔ Licensed in IL · 036115621✔ Licensed in MA · 217814

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

Also ListedObstetrics & Gynecology · Maternal & Fetal MedicineTaxonomy 207VM0101X · License 036115621 (IL)

2650 RIDGE AVE STE 1420, Evanston, IL 60201

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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

David Wei Ouyang 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 ID4082615505

PECOS Enrollment IDI20070126000290

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.

Hospital Affiliations CMS Care Compare

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

Northshore University Healthsystem - Evanston Hospital

Acute Care Hospitals · Evanston, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140010

Location2650 Ridge AveEvanston, IL 60201 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60201 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

$74.80 typical visit price

range $18.97 – $148.12

Typical copayment $18.70 (range $4.74 – $37.03)

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 5

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

AMELIA K RICHARDSON MS, CGC

Genetic Counselor, MS