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

DR. ILANA D BREEN MD
NPI 1770169120
Dermatology - MOHS-Micrographic Surgery in Orange, CA

Active since March 23, 2021PECOS Enrolled
101 THE CITY DR S STE 400, ORANGE, CA 92868(714) 456-5691 Get Directions Write a Review

NPPES record last updated: October 5, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 5, 2026, Apr 13, 2022, Mar 23, 2021 (3 updates tracked since 2021).

About Dr. Ilana D Breen Md NPPES

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

DR. ILANA D BREEN MD (NPI 1770169120) is an individual mohs-micrographic surgery provider in Orange, California, licensed in California (A180602) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1770169120
Entity TypeIndividualFemale
Primary Taxonomy207ND0101X
Provider Legal NameDR. ILANA D BREENCredential: MD
Location Address101 THE CITY DR S STE 400Orange, CA 92868-3201
Mailing Address10800 Magnolia AveRiverside, CA 92505-3043 · (833) 574-2273
Phone(714) 456-5691
Sole ProprietorNo
Enumeration DateMarch 23, 2021
Last NPPES UpdateOctober 5, 20263 updates tracked since enumeration
NPPES CertifiedOctober 5, 2026
✔ NPI 1770169120 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatology · MOHS-Micrographic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207ND0101X
License✔ Licensed in CA · A180602
Definition
The highly-trained surgeons that perform Mohs Micrographic Surgery are specialists both in dermatology and pathology. With their extensive knowledge of the skin and unique pathological skills, they are able to remove only diseased tissue, preserving healthy tissue and minimizing the cosmetic impact of the surgery. Mohs surgeons who belong to the American College of Mohs Surgery (ACMS) have completed a minimum of one year of fellowship training at one of the ACMS-approved training centers in the U.S.
101 THE CITY DR S STE 400, Orange, CA 92868
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Ilana D Breen Md 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 Ilana Breen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
337 mi
Internal Medicine
710 LAWRENCE EXPRESSWAY
Santa Clara, CA 95051
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1073606299 (408) 851-1000

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 92868 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
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.

BRIAN DIEP MD
Student in an Organized Health Care Education/Training Program
101 THE CITY DR S STE 400
ORANGE, CA 92868
Orange County (714) 456-5691
ANISH SAI KOLAN
Student in an Organized Health Care Education/Training Program
101 THE CITY DR S STE 400
ORANGE, CA 92868
Orange County (714) 456-5691
MICHELLE T NGUYEN
Student in an Organized Health Care Education/Training Program
101 THE CITY DR S STE 400
ORANGE, CA 92868
Orange County (714) 456-5691
DR. JOSEPH CARTON MD
Student in an Organized Health Care Education/Training Program
101 THE CITY DR S STE 400
ORANGE, CA 92868
Orange County (714) 456-5691
ERICA SHIN
Student in an Organized Health Care Education/Training Program
101 THE CITY DR S STE 400
ORANGE, CA 92868
Orange County (714) 456-5691
TIMOTHY CHANG
Student in an Organized Health Care Education/Training Program
101 THE CITY DR S STE 400
ORANGE, CA 92868
Orange County (714) 456-5691
SHANT ABRHAMIAN
Student in an Organized Health Care Education/Training Program
101 THE CITY DR S STE 400
ORANGE, CA 92868
Orange County (714) 456-5691
MICHELLE M NGUYEN
Psychiatry & Neurology (Neurology)
101 THE CITY DR S STE 400
ORANGE, CA 92868
Orange County (714) 456-5691

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 Ilana Breen's NPI number?

The NPI number for Ilana Breen is 1770169120. It was assigned to this individual provider in the NPPES registry on March 23, 2021.

Where is Ilana Breen located?

Ilana Breen practices at 101 The City Dr S Ste 400, Orange, CA 92868. The listed phone number is (714) 456-5691.

What is Ilana Breen's specialty?

The primary specialty registered for this NPI is Dermatology, specializing in MOHS-Micrographic Surgery, with taxonomy code 207ND0101X.

Is Ilana Breen enrolled in Medicare?

Yes. Ilana Breen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Ilana Breen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ilana Breen reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, 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 Ilana Breen'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 Ilana Breen was last updated on October 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.