ROMY DJU-HIEE YUN MD
NPI 1134317068
Anesthesiology - Pediatric Anesthesiology in Palo Alto, CA
About Romy Dju-hiee Yun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROMY DJU-HIEE YUN MD (NPI 1134317068) is an individual pediatric anesthesiology provider in Palo Alto, California, licensed in California (A108813) and active in the NPI registry since October 2007. She is enrolled in Medicare PECOS and is a graduate of Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University (2007).
NPPES Registry Identity
Specialties & Licenses 2
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
Romy Dju-hiee Yun 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.
Medicare Billing Reassignments
4Medicare enrollment records show Romy Yun reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 833 clinicians in this Medicare group
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Palo Alto, CA 94306
- Reassigned Medicare billing, California enrollment
- 2,460 clinicians in this Medicare group
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 94304 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Romy Yun's NPI number?
The NPI number for Romy Yun is 1134317068. It was assigned to this individual provider in the NPPES registry on October 4, 2007.
Where is Romy Yun located?
Romy Yun practices at 725 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 497-8000.
What is Romy Yun's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Pediatric Anesthesiology, with taxonomy code 207LP3000X.
Is Romy Yun enrolled in Medicare?
Yes. Romy Yun 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 Romy Yun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Romy Yun reassigns Medicare benefits to 4 organizations: Lpch Medical Group Div Of Lucile (Palo Alto, CA), Cep America - Anesthesia PC (Palo Alto, CA), Stanford Health Care (Stanford, CA) and County Of Santa Clara (Palo Alto, 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 Romy Yun'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 Romy Yun was last updated on April 10, 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.
# Romy Dju-Hiee Yun, MD · NPI 1134317068
Pediatric Anesthesiology physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since October 4, 2007.
## Identity
- **NPI:** 1134317068 (Entity type: Individual)
- **Enumerated:** October 4, 2007
- **Primary specialty:** Anesthesiology - Pediatric Anesthesiology · taxonomy 207LP3000X
- **State license:** A108813 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 725 WELCH RD, Palo Alto, CA 94304-1601
- **Phone:** (650) 497-8000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA); Cep America - Anesthesia PC (NPI 1588023949, Palo Alto, CA); Stanford Health Care (NPI 1437292927, Stanford, CA); County Of Santa Clara (NPI 1144330614, Palo Alto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, class of 2007
## Record status
- **NPPES last updated:** April 10, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1134317068) · Data from the CMS NPPES public registry.