William Warren Kwan, MD
William Warren Kwan is a Dermatology specialist based in Los Angeles, CA with over 36 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
With over 36 years in dermatology, William Warren Kwan, MD is a long-established dermatologist in Los Angeles. He graduated from University of California, Geffen School of Medicine in 1990 and has 36+ years of clinical experience. Among his Medicare patients, common conditions include high cholesterol, hypertension, and arthritis (per CMS data). CMS MIPS quality score: 94.53/100 (2023).
At a glance
- Federal MIPS score higher than 80% of MIPS-scored doctors in California
- Virtual visits available — no app or travel required
Older · 318dNPPES updated 2025-07-09 · verify NPI on CMS · Verify license at Medical Board of California
How Does This Doctor Compare?
Based on Medicare data, this doctor scores better than 80% of doctors in California on federal quality measures.
MIPS Score
202394.53/100
California avg: 78.6 · US avg: 83.6
✓ Higher than most doctors nationally(+10.9 pts)
Better than 80% of MIPS-scored doctors in CaliforniaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Medicare Patients
28
Unique beneficiaries
Boutique practicePrescription Recipients
24
Patients prescribed
Prescriptions Written
44
Total claims
Total Medicare drug cost: $2k
Percentile rankings compared against 9,360 reporting peers in California.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages High Cholesterol, Hypertension, and Arthritis.
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↓ Fewer patients than average (-13%) — less common here
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↓ Fewer patients than average (-24%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-6%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$1.3k received from industry
29 transactions reported in 2024 ·Moderate tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to William Warren Kwan's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1990
David Geffen School of Medicine at Ucla
Board certified · Jul 8, 2025
Self-reported via NPPES
36 years in practice
Senior practitioner
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
Taxonomy: 207N00000X
Education & Training
University of California, Geffen School of Medicine (Class of 1990)
Mailing address
360 Post St Ste 400, San Francisco, CA 94108-4907
Differs from practice location
Virtual Dermatology Care With William Warren Kwan
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with William Warren Kwan for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to Los Angeles required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about William Warren Kwan
Dr. Kwan is listed as active in the NPI registry with telehealth listed in Los Angeles, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (310) 659-9075.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact William Warren Kwan
Practice Location
8631 W 3rd St Ste 1035, Los Angeles, CA 90048-5964
Mailing Address
360 Post St Ste 400, San Francisco, CA 94108-4907
This is a provider directory. Contact the office directly to schedule appointments.
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