2026 NPPES data Dermatology Physician NPI 1285781492 M.D.
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Jacqueline Losi-Sasaki, M.D.

Dermatology Physician in Chico, 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 14,645 in Dermatology Physician, 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
1K
Medicare Part D claims · 363 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Industry payments
$378.41
16 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

Jacqueline Losi-Sasaki, M.D. carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 1,022 Medicare Part D claims in 2023.

75/100
CMS neutral score · not measured
1K
Part D claims, 2023
96%
generic prescribing
Likely
board-certified (heuristic)

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.

Jacqueline Losi-Sasaki, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

1,022 ≥ 76th percentile 76% of 1,370,886 prescribers are in lower value bands

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). This entry sits in this band. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 · 2023

Board certification likely (heuristic, not verified)

Jacqueline Losi-Sasaki, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Jacqueline Losi-Sasaki, M.D.?

CMS neutral score, not measured

NPI registry status

Active

Issued 01/03/2007

NPI 1285781492

Primary specialty

Dermatology Physician

Mid-sized

14,645 US NPIs in this specialty

Medicare Part D claims

1,022 40% vs specialty avg

2023 prescription claims

Specialty avg: 729

MIPS final score

75/100

CMS neutral score, not measured

No category scores published; CMS assigned the performance threshold

Specialty distribution in California

How Dermatology Physician compares to other specialties among California providers

California providers
Behavior Technician17.3%Marriage & Family Therapist5.5%Student in an Organized Heal…5%Mental Health Counselor3.9%Pharmacist3.5%Clinical Social Worker3.1%Dermatology Physician0.2%
Largest specialties in California (% of in-state providers)

MIPS score not measured

CMS assigned a neutral 75/100 threshold

CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.

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).

Jacqueline Losi-Sasaki, M.D. appears in the CMS NPPES registry as a Dermatology Physician provider holding M.D. credentials at 270 COHASSET RD STE 100, Chico, CA, 95926, with a listed phone of (530) 895-1396. NPI 1285781492 was issued on 01/03/2007.

Medicare Part D records for calendar year 2023 show 1,022 prescription claims written by this provider, covering 363 Medicare beneficiaries and totaling roughly $239K in drug spend, split 4% brand-name and 96% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider carries a Final Score of 75/100 for the 2023 performance year, but CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score: this is the neutral performance threshold CMS assigns where nothing was scored, so it is not comparable with clinicians whose score was measured.

Dermatology Physician is a mid-sized specialty nationwide, with 14,645 enrolled providers across 53 states and an average of 729 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

270 COHASSET RD STE 100
Chico, CA 95926

Provider Details

NPI 1285781492
Specialty Dermatology Physician
Credentials M.D.
Gender Female
NPI Issued 01/03/2007

CMS Quality Score (MIPS)

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

75
Final Score
CMS neutral threshold · not measured

Reporting: Individual

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Jacqueline Losi-Sasaki, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$378

Largest payer

Janssen Biotech, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 Jacqueline Losi-Sasaki, M.D.. To verify Jacqueline Losi-Sasaki, 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 · Generic-heavy

Jacqueline Losi-Sasaki, M.D. - brand share 4.0%
Dermatology Physician average

4% brand-name claims vs 96% generic, on 1,022 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.

1,022
Total Claims
$239K
Total Drug Cost
363
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,201
Total Day Supply
30,949
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$210K
Generic Drug Cost
$29K
Antibiotic Claims
102

Patient Demographics

Average Patient Age
75.2 years
Avg HCC Risk Score
0.83
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 Jacqueline Losi-Sasaki, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Ketoconazole
119
Mupirocin
108
Ciclopirox
Ciclopirox Olamine
107
Clobetasol Propionate
64
Minoxidil
59
Doxycycline Hyclate
52
Triamcinolone Acetonide
50
Levocetirizine Dihydrochloride
42
Famotidine
33
Acyclovir
28

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

Dermatology Physician Overview

How Jacqueline Losi-Sasaki, M.D. fits within the Dermatology Physician landscape nationally.

14,645
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider

Jacqueline Losi-Sasaki, M.D.'s 1,022 claims are above the specialty average of 729.

Nearby Dermatology Physician Providers in California

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

Compare Dermatology Physician 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 Dermatology Physician 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.

Frequently Asked Questions

What is Jacqueline Losi-Sasaki, M.D.'s specialty?
Jacqueline Losi-Sasaki, M.D. specializes in Dermatology Physician and practices in Chico, California. Credentials: M.D..
How much does Jacqueline Losi-Sasaki, M.D. prescribe under Medicare Part D?
In 2023, Jacqueline Losi-Sasaki, M.D. wrote 1,022 Medicare Part D claims totaling $239K in drug costs for 363 beneficiaries.
What is Jacqueline Losi-Sasaki, M.D.'s Medicare quality score?
Jacqueline Losi-Sasaki, M.D. has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. 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 Jacqueline Losi-Sasaki, M.D. located?
Jacqueline Losi-Sasaki, M.D. is located at 270 COHASSET RD STE 100, Chico, CA, 95926. Phone: (530) 895-1396.
What is Jacqueline Losi-Sasaki, M.D.'s NPI number?
Jacqueline Losi-Sasaki, M.D.'s National Provider Identifier (NPI) is 1285781492, issued on 01/03/2007.
Does Jacqueline Losi-Sasaki, M.D. prescribe more brand-name or generic drugs?
Jacqueline Losi-Sasaki, M.D.'s prescribing is 4% brand-name and 96% generic drugs by claim count, with $210K in brand drug costs.
How many Dermatology Physician providers are there in the US?
There are 14,645 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does Jacqueline Losi-Sasaki, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Jacqueline Losi-Sasaki, M.D.'s most frequently prescribed drugs include Ketoconazole, Mupirocin, Ciclopirox. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jacqueline Losi-Sasaki, M.D. accept Medicare?
Jacqueline Losi-Sasaki, M.D. appears in CMS Medicare data with 1,022 Part D claims and 363 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jacqueline Losi-Sasaki, M.D.'s credentials?
Jacqueline Losi-Sasaki, M.D.'s NPI is 1285781492 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 (2023). 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 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

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.