NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1306248703
Verify on CMS → So Yun Ahn
Family Nurse Practitioner in Visalia, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 216,959 in Family Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
189
Medicare Part D claims · 112 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
So Yun Ahn filed 189 Medicare Part D claims in 2024 as a Family Nurse Practitioner in Visalia, California, prescribing 91% generic.
- 189
- Part D claims, 2024
- 91%
- generic prescribing
- ≥34th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about So Yun Ahn
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1306248703), first enumerated 09/17/2014.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 189 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not So Yun Ahn's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1306248703 · Family Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1306248703
- ENUM-MID 2014
- TAX-MEGA 217K Family Nurse
- RX-LIGHT 189
- BOOK-MID 15,527 in California
- PHOTO-ENUM Anitra Kemp-Major · 2014
So Yun Ahn's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
189 ≥ 34th percentile 34% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about So Yun Ahn?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
189 85% vs specialty avg
Specialty distribution in California
How Family Nurse Practitioner compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Nurse Practitioner. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1306248703 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Gender | Female |
| NPI Issued | 09/17/2014 |
Hospital and facility affiliations
Facilities where So Yun Ahn bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
SC Medical, Inc.
Santa Clarita, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to So Yun Ahn. To verify So Yun Ahn's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
So Yun Ahn - brand share 9.0%
Family Nurse Practitioner average
9% brand-name claims vs 91% generic, on 189 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
189
Total Claims
$2K
Total Drug Cost
112
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 189
- Total Day Supply
- 1,920
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $423
- Generic Drug Cost
- $1K
- Antibiotic Claims
- 77
Patient Demographics
- Average Patient Age
- 72.5 years
- Avg HCC Risk Score
- 1.36
- Gender Split
- 67% female / 33% male
- Age Distribution
- <65: 17, 65-74: 45, 75-84: 36, 85+: 14
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What So Yun Ahn prescribes most
Top Medicare Part D drugs by claim count, 2024
- Prednisone
Prednisone
32 claims
- Azithromycin
Azithromycin
21 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
19 claims
- Cephalexin
Cephalexin
17 claims
| Drug | Claims |
|---|---|
| Prednisone | 32 |
| Azithromycin | 21 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 19 |
| Cephalexin | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Nurse Practitioner Overview
How So Yun Ahn fits within the Family Nurse Practitioner landscape nationally.
216,959
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,302
Avg Claims per Provider
So Yun Ahn's 189 claims are below the specialty average of 1,302.
Nationwide Family Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Ahn, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2014)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Ahn.
One of 15,527 Family Nurse Practitioner providers enrolled in California, 5 are shown here.
Danielle Aaroe
FAMILY NURSE PRACTIT
Oroville, CA
Joshua Aaron
Mission Hills, CA
Orly Aaron
NP
San Francisco, CA
Paris Gilbert Russ Aaron
Sacramento, CA
Alvin Joseph Abad
FNP-C
San Francisco, CA
Compare Family Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is So Yun Ahn's specialty? ▼
So Yun Ahn specializes in Family Nurse Practitioner and practices in Visalia, California.
How much does So Yun Ahn prescribe under Medicare Part D? ▼
In 2024, So Yun Ahn wrote 189 Medicare Part D claims totaling $2K in drug costs for 112 beneficiaries.
Where is So Yun Ahn located? ▼
So Yun Ahn is located at 627 S GARDEN ST APT C, Visalia, CA, 93277. Phone: (714) 581-3222.
What is So Yun Ahn's NPI number? ▼
So Yun Ahn's National Provider Identifier (NPI) is 1306248703, issued on 09/17/2014.
Does So Yun Ahn prescribe more brand-name or generic drugs? ▼
So Yun Ahn's prescribing is 9% brand-name and 91% generic drugs by claim count, with $423 in brand drug costs.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 216,959 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,302 Medicare Part D claims per year.
What drugs does So Yun Ahn prescribe most often? ▼
Based on 2024 Medicare Part D data, So Yun Ahn's most frequently prescribed drugs include Prednisone, Azithromycin, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does So Yun Ahn accept Medicare? ▼
So Yun Ahn appears in CMS Medicare data with 189 Part D claims and 112 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify So Yun Ahn's credentials? ▼
So Yun Ahn's NPI is 1306248703. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.