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IRENE WOO M.D.
NPI 1104141217
Obstetrics & Gynecology in Encino, CA

Active since March 31, 2010PECOS Enrolled
16550 VENTURA BLVD STE 400, ENCINO, CA 91436(866) 988-8225 Get Directions Write a Review

NPPES record last updated: October 28, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 15, 2017, Feb 15, 2017 (2 updates tracked since 2017).

About Irene Woo M.d. NPPES

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

IRENE WOO M.D. (NPI 1104141217) is an individual obstetrics & gynecology provider in Encino, California, licensed in California (A130687) and active in the NPI registry since March 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1104141217
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameIRENE WOOCredential: M.D.
Location Address16550 VENTURA BLVD STE 400Encino, CA 91436-2040
Mailing Address16550 Ventura Blvd Ste 400Encino, CA 91436-2040
Phone(866) 988-8225
Sole ProprietorYes
Enumeration DateMarch 31, 2010
Last NPPES UpdateOctober 28, 20212 updates tracked since enumeration
NPPES CertifiedOctober 28, 2021
✔ NPI 1104141217 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · A130687
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.
16550 VENTURA BLVD STE 400, Encino, CA 91436
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Other Names 1

Professional Name (2)Irene Woo M.d.

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Irene Woo M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Irene Woo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
5.3 mi
Health Maintenance Organization
8999 BALBOA BLVD
Northridge, CA 91325
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1013409036 (877) 608-0044

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91436 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 2

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

THERESA ROBERTS PT, MOMT
Physical Therapist
16550 VENTURA BLVD STE 400
ENCINO, CA 91436
Los Angeles County (818) 905-1331
LOTUS JOINT & SPINE INC
Clinic/Center (Ambulatory Surgical)
16550 VENTURA BLVD STE 400
ENCINO, CA 91436
Los Angeles County (818) 307-6508

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 Irene Woo's NPI number?

The NPI number for Irene Woo is 1104141217. It was assigned to this individual provider in the NPPES registry on March 31, 2010. The provider is also known as Irene Woo M.D..

Where is Irene Woo located?

Irene Woo practices at 16550 Ventura Blvd Ste 400, Encino, CA 91436. The listed phone number is (866) 988-8225.

What is Irene Woo's specialty?

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

Is Irene Woo enrolled in Medicare?

Yes. Irene Woo is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Irene Woo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Irene Woo reassigns Medicare benefits to Southern California Permanente Medical Group (Northridge, CA). The 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 Irene Woo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Irene Woo was last updated on October 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.