Sam S Ahn, M.D.
Sam S Ahn is an Allergy & Immunology specialist based in Napa, CA with over 23 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INTERNAL MEDICINE
Sam S Ahn, M.D. practices as part of a group allergy & immunology specialist practice in Napa, CA. Trained at Harvard Medical School (class of 2003), he has been practicing for over 23 years. Among his Medicare patients, common conditions include high cholesterol, hypertension, and arthritis (per CMS data). CMS MIPS quality score: 82.29/100 (2023).
At a glance
- Federal MIPS score higher than 49% of MIPS-scored doctors in California
- Virtual visits available — no app or travel required
Older · 1173dNPPES updated 2023-03-07 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
1100 Pear Tree Ln, Napa, CA 94558-6446
How Does This Doctor Compare?
Based on Medicare data, this doctor has an average quality score compared to other doctors in California.
MIPS Score
202382.29/100
California avg: 78.6 · US avg: 83.6
⚠ Lower than most doctors nationally(-1.3 pts)
Average range among MIPS-scored doctors in CaliforniaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Medicare Patients
505
Unique beneficiaries
High volumePrescription Recipients
413
Patients prescribed
Prescriptions Written
2,212
Total claims
Total Medicare drug cost: $1.59M
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%↑ More patients than average (+5%) — a focus area for this doctor
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↓ Fewer patients than average (-5%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-2%) — less common here
A condition causing airway inflammation, wheezing, and difficulty breathing
US avg: 13.3%↑ More patients than average (+33%) — a focus area for this doctor
Weakened bones that are more prone to fractures, common in older adults
US avg: 18.1%↑ More patients than average (+2%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$3.4k received from industry
78 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 Sam S Ahn's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2003
Harvard Medical School
Board certified · Feb 4, 2020
Self-reported via NPPES
23 years in practice
Experienced
An internist doctor of osteopathy that specializes in the treatment of allergy and immunologic disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Special Qualifications in the field of Allergy & Immunology.
Taxonomy: 207RA0201X
Education & Training
Harvard Medical School (Class of 2003)
Primary hospital affiliation: Psychiatric
CMS Certification Number: 184017
View hospital on Medicare Care CompareVirtual Allergy & Immunology Care With Sam S Ahn
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Sam S Ahn for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to Napa 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 Sam S Ahn
NPI records show Dr. Ahn as active with telehealth listed in Napa, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (707) 258-8100.
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 Sam S Ahn
Practice Location
1100 Pear Tree Ln, Napa, CA 94558-6446
Mailing Address
1100 Pear Tree Ln, Napa, CA 94558-6446
This is a provider directory. Contact the office directly to schedule appointments.
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