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2026 NPPES data Specialist NPI 1285669762 M.D.
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Peter Youn, M.D.

Specialist in Los Gatos, 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 69,567 in Specialist, 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
338
Medicare Part D claims · 300 beneficiaries · Specialist avg: 2K
Generic prescribing
70%
generic claims · 30% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
0/100
▼ 84 pts below national avg 83.5 · Penalty band
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Peter Youn, M.D. reported a CMS MIPS final score of 0/100 - below the 83.5 national average - and filed 338 Medicare Part D claims in 2024.

0/100
MIPS score · -83 vs avg
338
Part D claims, 2024
70%
generic prescribing
≥0th
pct among measured MIPS (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 Peter Youn, M.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1285669762), first enumerated 07/12/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 338 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 0/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • State context

    State board disciplinary context

    California statewide board action statistics are published annually — these figures describe aggregate state activity, not Peter Youn, M.D.'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 1285669762 · Specialist

NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-LOW · RX-LIGHT · BOOK-MID · PHOTO-FINISH

  • NPI-10 1285669762
  • ENUM-LEGACY 2006
  • TAX-MEGA 70K Specialist
  • MIPS-LOW 0/100
  • RX-LIGHT 338
  • BOOK-MID 6,640 in California
  • PHOTO-FINISH Ney Andujar · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Peter Youn, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

0 ≥ 0th percentile 0% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). This entry sits in this band. 10–20: 3,008 measured providers (1%). Above this entry. 20–30: 3,069 measured providers (1%). Above this entry. 30–40: 2,746 measured providers (1%). Above this entry. 40–50: 2,928 measured providers (1%). Above this entry. 50–60: 5,882 measured providers (1%). Above this entry. 60–70: 13,906 measured providers (3%). Above this entry. 70–80: 94,570 measured providers (21%). Above this entry. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Peter Youn, M.D. sits

This provider among specialist peers

Across the 4,261 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Peter Youn, M.D. writes more Part D claims than 32% of them and scores higher on MIPS quality than 0% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.148.372.496.6Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 0Peter Youn, M.D., Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 0
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one specialist peer from a representative sample of 60; the gold marker is Peter Youn, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Peter Youn, M.D.?

Below national average

NPI registry status

Active

Issued 07/12/2006

NPI 1285669762

Primary specialty

Specialist

High-volume

69,567 US NPIs in this specialty

Medicare Part D claims

338 78% vs specialty avg

2024 prescription claims

Specialty avg: 1,524

MIPS final score

0/100 83.5 pts vs avg

Penalty band band

vs 83.5 national avg

Specialty distribution in California

How Specialist compares to other specialties among California providers

California providers
Behavior Technician17.9%Marriage & Family Therapist5.4%Student in an Organized Heal…5.1%Mental Health Counselor3.7%Pharmacist3.4%Clinical Social Worker3.1%Specialist0.7%
Largest specialties in California (% of in-state providers)

Medicare quality performance, MIPS

Peter Youn, M.D.'s 2023 MIPS final score plotted against the Specialist national average

Below national average
MIPS Final Score
0/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%0%
MIPS final score (Specialist) - 0/100 vs national avg 83.5
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

15195 NATIONAL AVE STE 206
Los Gatos, CA 95032
(408) 884-8077

Provider Details

NPI 1285669762
Specialty Specialist
Credentials M.D.
Gender Male
NPI Issued 07/12/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

0
Final Score
Measured-score avg: 83.5
0
Quality

Reporting: Individual

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 Peter Youn, M.D.. To verify Peter Youn, M.D.'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 · Above average

Peter Youn, M.D. - brand share 30.0%
Specialist average

30% brand-name claims vs 70% generic, on 338 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.

338
Total Claims
$20K
Total Drug Cost
300
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
347
Total Day Supply
1,186
Brand vs Generic
30% brand / 70% generic
Brand Drug Cost
$6K
Generic Drug Cost
$13K
Antibiotic Claims
29

Patient Demographics

Average Patient Age
72.3 years
Avg HCC Risk Score
0.83
Gender Split
44% female / 56% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

Drug Claims
Sod Sulf-Potass Sulf-Mag Sulf
Sodium, Potassium,mag Sulfates
290

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

More Specialist in CA → All providers in California → Compare specialties →

Specialist Overview

How Peter Youn, M.D. fits within the Specialist landscape nationally.

69,567
Specialist Providers in US
55
States with Specialist
1,524
Avg Claims per Provider

Peter Youn, M.D.'s 338 claims are below the specialty average of 1,524.

Nationwide Specialist peers with similar MIPS or enrollment year

Two federal-record peer sets for Youn, both outside California so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (0 here).

Ney Andujar 0 FL Jonathan Bernie 0 CT Lloyd Brenden 0 AZ Samuel Budnyk 0 FL

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Gregory Finkbeiner Rochester, NY Eric Baum Gadsden, AL Michael Macfee Augusta, GA Amy Richardson La Grange, KY

Nearby Specialist Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Youn.

One of 6,640 Specialist providers enrolled in California, 5 are shown here.

Adrienne Abad Santos
San Francisco, CA
Dr. Brenda Abarca
MD
Torrance, CA
Fatemeh Abbasi
PT
Van Nuys, CA
Dr. Erlinda Abcede
M.D.
Cudahy, CA
Dr. Maher Abdallah
M.D.
Palm Springs, CA

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is Peter Youn, M.D.'s specialty? ▼
Peter Youn, M.D. specializes in Specialist and practices in Los Gatos, California. Credentials: M.D..
How much does Peter Youn, M.D. prescribe under Medicare Part D? ▼
In 2024, Peter Youn, M.D. wrote 338 Medicare Part D claims totaling $20K in drug costs for 300 beneficiaries.
What is Peter Youn, M.D.'s Medicare quality score? ▼
Peter Youn, M.D. has a CMS MIPS Final Score of 0/100 (Quality: 0). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Peter Youn, M.D. located? ▼
Peter Youn, M.D. is located at 15195 NATIONAL AVE STE 206, Los Gatos, CA, 95032. Phone: (408) 884-8077.
What is Peter Youn, M.D.'s NPI number? ▼
Peter Youn, M.D.'s National Provider Identifier (NPI) is 1285669762, issued on 07/12/2006.
Does Peter Youn, M.D. prescribe more brand-name or generic drugs? ▼
Peter Youn, M.D.'s prescribing is 30% brand-name and 70% generic drugs by claim count, with $6K in brand drug costs.
How many Specialist providers are there in the US? ▼
There are 69,567 Specialist providers across 55 states in the US. The average Specialist provider writes 1,524 Medicare Part D claims per year.
What drugs does Peter Youn, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Peter Youn, M.D.'s most frequently prescribed drugs include Sod Sulf-Potass Sulf-Mag Sulf. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Peter Youn, M.D. accept Medicare? ▼
Peter Youn, M.D. appears in CMS Medicare data with 338 Part D claims and 300 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Peter Youn, M.D.'s credentials? ▼
Peter Youn, M.D.'s NPI is 1285669762 with credentials M.D.. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
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

Compiled from official public sources by the editorial process.

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.