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CAROLINE EUN YUNG OH NP
NPI 1184894974
Nurse Practitioner - Family in Mission Viejo, CA

Active since March 07, 2008PECOS Enrolled
25272 MARGUERITE PKWY, MISSION VIEJO, CA 92692(866) 389-2727 Get Directions Write a Review

NPPES record last updated: February 22, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Caroline Eun Yung Oh Np NPPES

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

CAROLINE EUN YUNG OH NP (NPI 1184894974) is an individual family provider in Mission Viejo, California, licensed in California (16554) and active in the NPI registry since March 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1184894974
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameCAROLINE EUN YUNG OHCredential: NP
Location Address25272 MARGUERITE PKWYMission Viejo, CA 92692-2901
Mailing Address25272 Marguerite PkwyMission Viejo, CA 92692-2901 · (866) 389-2727
Phone(866) 389-2727
Sole ProprietorNo
Enumeration DateMarch 7, 2008
Last NPPES UpdateFebruary 22, 2016
✔ NPI 1184894974 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in CA · 16554
Also ListedRegistered NurseTaxonomy 163W00000X · License 594840 (CA)
25272 MARGUERITE PKWY, Mission Viejo, CA 92692
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Other Names 1

Other Name (5)Caroline Oh Np

Other Identifiers 1

Medicare PINB1222ZCA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Caroline Eun Yung Oh Np 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 Reassignments

2

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

University Head & Neck Surgeons
19 mi
Otolaryngology
101 THE CITY DR S, BLDG 56, ROUTE 81, STE 500
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 47 clinicians in this Medicare group
NPI 1669437075 (714) 456-6655
Housecall Doctors Medical Group Inc
32 mi
Geriatric Medicine
3800 KILROY AIRPORT WAY STE 270
Long Beach, CA 90806
  • Reassigned Medicare billing, California enrollment
  • 104 clinicians in this Medicare group
NPI 1033164017 (949) 366-1053

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 92692 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
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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 10

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

JACQUELINE PHAM
Nurse Practitioner (Psychiatric/Mental Health)
25272 MARGUERITE PKWY
MISSION VIEJO, CA 92692
Orange County (949) 581-9120
DR. ARYAN RABBANI PHARM.D
Pharmacist
25272 MARGUERITE PKWY
MISSION VIEJO, CA 92692
Orange County (949) 581-9120
KATAYOUN TAHERIAN PHARM. D.
Pharmacist
25272 MARGUERITE PKWY
MISSION VIEJO, CA 92692
Orange County (949) 735-9265
NICOLAS PHETNIRANH SENGDARA NP-C
Nurse Practitioner (Family)
25272 MARGUERITE PKWY
MISSION VIEJO, CA 92692
Orange County (949) 581-9120
STEPHANIE LE PHARMD
Pharmacist
25272 MARGUERITE PKWY
MISSION VIEJO, CA 92692
Orange County (949) 581-9120
GARFIELD BEACH CVS LLC
Pharmacy
25272 MARGUERITE PKWY
MISSION VIEJO, CA 92692
Orange County (401) 765-1550
SHANNON LAUREN LIAUW FNP-C
Nurse Practitioner (Family)
25272 MARGUERITE PKWY
MISSION VIEJO, CA 92692
Orange County (949) 581-9120
DR. ROZA KAZEMI PHARM D
Pharmacist
25272 MARGUERITE PKWY
MISSION VIEJO, CA 92692
Orange County (949) 581-9120

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 Caroline Oh's NPI number?

The NPI number for Caroline Oh is 1184894974. It was assigned to this individual provider in the NPPES registry on March 7, 2008. The provider is also known as Caroline Oh Np.

Where is Caroline Oh located?

Caroline Oh practices at 25272 Marguerite Pkwy, Mission Viejo, CA 92692. The listed phone number is (866) 389-2727.

What is Caroline Oh's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Caroline Oh enrolled in Medicare?

Yes. Caroline Oh is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Caroline Oh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Caroline Oh reassigns Medicare benefits to 2 organizations: University Head & Neck Surgeons (Orange, CA) and Housecall Doctors Medical Group Inc (Long Beach, CA). 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 Caroline Oh'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 Caroline Oh was last updated on February 22, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.