Katherine Yi, FNP
NPI 1154033371 · Family Nurse Practitioner · Costa Mesa, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Yi, FNP is a Family Nurse Practitioner provider in Costa Mesa, CA (NPI 1154033371).
Provider details
- NPI number
- 1154033371
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95022842 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
3 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,068 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 430 | $164 |
| Transitional Care Management Services for Problem of High Complexity99496 | 187 | $258 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 156 | $57 |
| Residence Visit for New Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 75 Minutes99345 | 138 | $179 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 66 | $113 |
| Advance Care Planning, First 30 Minutes99497 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-12-19
- Last updated
- 2023-03-27
- Certified
- 2023-03-25
Frequently asked questions
- What is Katherine Yi's NPI number?
- Katherine Yi's National Provider Identifier (NPI) is 1154033371, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Yi's specialty?
- Katherine Yi is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Yi located?
- Katherine Yi's practice location on file with NPPES is 150 Paularino Ave Ste D182, Costa Mesa, CA 92626-3302.
- What is Katherine Yi's phone number?
- The practice phone number listed in the NPPES registry for Katherine Yi is (949) 749-3425.
- Does Katherine Yi accept Medicare?
- Katherine Yi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Yi's NPI active?
- Yes — Katherine Yi's NPI (1154033371) is active in the NPPES registry as of the last update on 2023-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.