DR. ROSEMARY YI MD
NPI 1871804880
Orthopaedic Surgery in Glendora, CA
About Dr. Rosemary Yi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROSEMARY YI MD (NPI 1871804880) is an individual orthopaedic surgery provider in Glendora, California, licensed in California (A167617) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2010).
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
Dr. Rosemary Yi 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
2Medicare enrollment records show Rosemary Yi reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Glendora, CA 91741
- Reassigned Medicare billing, California enrollment
- 70 clinicians in this Medicare group
West Covina, CA 91790
- Reassigned Medicare billing, California enrollment
- 114 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.
Areas of Expertise CMS Part B claims 11
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91741 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
GLENDORA, CA 91741
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 Rosemary Yi's NPI number?
The NPI number for Rosemary Yi is 1871804880. It was assigned to this individual provider in the NPPES registry on June 24, 2010.
Where is Rosemary Yi located?
Rosemary Yi practices at 412 W Carroll Ave Ste 107, Glendora, CA 91741. The listed phone number is (626) 914-4890.
What is Rosemary Yi's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is Rosemary Yi enrolled in Medicare?
Yes. Rosemary Yi 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 Rosemary Yi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rosemary Yi reassigns Medicare benefits to 2 organizations: Emanate Health Medical Group (Glendora, CA) and Emanate Health Medical Care Foundation (West Covina, 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 Rosemary Yi'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 Rosemary Yi was last updated on February 5, 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.
# Dr. Rosemary Yi, MD · NPI 1871804880
Orthopaedic Surgery physician in Glendora, California. Individual provider, active in the CMS NPPES registry since June 24, 2010.
## Identity
- **NPI:** 1871804880 (Entity type: Individual)
- **Enumerated:** June 24, 2010
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** A167617 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 412 W CARROLL AVE STE 107, Glendora, CA 91741-4708
- **Phone:** (626) 914-4890 · **Fax:** (626) 963-8351
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Emanate Health Medical Group (NPI 1326582743, Glendora, CA); Emanate Health Medical Care Foundation (NPI 1467195073, West Covina, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** February 5, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1871804880) · Data from the CMS NPPES public registry.