NPI registry status
Active
2026 NPPES data Primary Care Nurse Practitioner NPI 1912435553
Verify on CMS → Ji Youn Lee
Primary Care Nurse Practitioner in Los Angeles, 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 10,179 in Primary Care 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
7K
Medicare Part D claims · 618 beneficiaries · Primary Care Nurse Practitioner avg: 1K
Generic prescribing
82%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Ji Youn Lee filed 6,591 Medicare Part D claims in 2023 as a Primary Care Nurse Practitioner in Los Angeles, California, prescribing 82% generic.
- 7K
- Part D claims, 2023
- 82%
- generic prescribing
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.
Ji Youn Lee's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
6,591 Top 4% higher than 96% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Ji Youn Lee?
Quality data not reportedPrimary specialty
Primary Care Nurse Practitioner
Medicare Part D claims
6,591 384% vs specialty avg
Specialty distribution in California
How Primary Care 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 Primary Care 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).
Ji Youn Lee appears in the CMS NPPES registry as a Primary Care Nurse Practitioner provider at 501 S OXFORD AVE APT 17, Los Angeles, CA, 90020, with a listed phone of (213) 505-7667. NPI 1912435553 was issued on 05/26/2017.
Medicare Part D records for calendar year 2023 show 6,591 prescription claims written by this provider, covering 618 Medicare beneficiaries and totaling roughly $1.0 million in drug spend, split 16% brand-name and 82% generic by claim count, with an opioid prescribing rate of 0.3%.
Primary Care Nurse Practitioner is a mid-sized specialty nationwide, with 10,179 enrolled providers across 54 states and an average of 1,363 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1912435553 |
|---|---|
| Specialty | Primary Care Nurse Practitioner |
| Gender | Female |
| NPI Issued | 05/26/2017 |
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 Ji Youn Lee. To verify Ji Youn Lee'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 · Typical
Ji Youn Lee - brand share 16.0%
Primary Care Nurse Practitioner average
16% brand-name claims vs 82% generic, on 6,591 2023 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 2023.
6,591
Total Claims
$1.0M
Total Drug Cost
618
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 11,037
- Total Day Supply
- 314,007
- Brand vs Generic
- 16% brand / 82% generic
- Brand Drug Cost
- $841K
- Generic Drug Cost
- $204K
- Opioid Claims
- 19 (0.3% rate)
- Antibiotic Claims
- 439
Patient Demographics
- Average Patient Age
- 74.6 years
- Avg HCC Risk Score
- 2.61
- Gender Split
- 57% female / 43% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ji Youn Lee prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
547 claims
- Losartan Potassium
Losartan Potassium
334 claims
- Azithromycin
Azithromycin
296 claims
- Vascepa
Vascepa
256 claims
- Omeprazole
Omeprazole
238 claims
- Creon
Creon
224 claims
- Amlodipine Besylate 205
Amlodipine Besylate
205 claims
- Metformin Hcl 177
Metformin Hcl
177 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 547 |
| Losartan Potassium | 334 |
| Azithromycin | 296 |
| Vascepa Icosapent Ethyl | 256 |
| Omeprazole | 238 |
| Creon Lipase/Protease/Amylase | 224 |
| Amlodipine Besylate | 205 |
| Metformin Hcl | 177 |
| Lidocaine | 172 |
| Tamsulosin Hcl | 158 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Primary Care Nurse Practitioner Overview
How Ji Youn Lee fits within the Primary Care Nurse Practitioner landscape nationally.
10,179
Primary Care Nurse Practitioner Providers in US
54
States with Primary Care Nurse Practitioner
1,363
Avg Claims per Provider
Ji Youn Lee's 6,591 claims are above the specialty average of 1,363.
Nearby Primary Care Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Lee.
Pernian Abadi
Bakersfield, CA
Ann Abraham
Long Beach, CA
Dr. Angelica Acevedo
FNP
Parlier, CA
Dr. Natalie Adame
PNP
Orange, CA
Dr. Tracie Adamson
NP, CNS, LCSW
Palo Alto, CA
Compare Primary Care Nurse Practitioner nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Primary Care Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Medical Specialties Explained
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Frequently Asked Questions
What is Ji Youn Lee's specialty? ▼
Ji Youn Lee specializes in Primary Care Nurse Practitioner and practices in Los Angeles, California.
How much does Ji Youn Lee prescribe under Medicare Part D? ▼
In 2023, Ji Youn Lee wrote 6,591 Medicare Part D claims totaling $1.0M in drug costs for 618 beneficiaries.
Where is Ji Youn Lee located? ▼
Ji Youn Lee is located at 501 S OXFORD AVE APT 17, Los Angeles, CA, 90020. Phone: (213) 505-7667.
What is Ji Youn Lee's NPI number? ▼
Ji Youn Lee's National Provider Identifier (NPI) is 1912435553, issued on 05/26/2017.
Does Ji Youn Lee prescribe more brand-name or generic drugs? ▼
Ji Youn Lee's prescribing is 16% brand-name and 82% generic drugs by claim count, with $841K in brand drug costs.
Does Ji Youn Lee prescribe opioids? ▼
Yes, Ji Youn Lee had 19 opioid claims in 2023 with an opioid prescribing rate of 0.3%.
How many Primary Care Nurse Practitioner providers are there in the US? ▼
There are 10,179 Primary Care Nurse Practitioner providers across 54 states in the US. The average Primary Care Nurse Practitioner provider writes 1,363 Medicare Part D claims per year.
What drugs does Ji Youn Lee prescribe most often? ▼
Based on 2023 Medicare Part D data, Ji Youn Lee's most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Azithromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ji Youn Lee accept Medicare? ▼
Ji Youn Lee appears in CMS Medicare data with 6,591 Part D claims and 618 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ji Youn Lee's credentials? ▼
Ji Youn Lee's NPI is 1912435553. 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 (2023). 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.