John W Adamson, MD
John W Adamson is a Hematology Internal Medicine specialist based in San Diego, CA with over 64 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
With over 64 years in internal medicine, John W Adamson, MD is a long-established hematologist in San Diego. A University of California, Geffen School of Medicine graduate since 1962, he brings 64+ years of experience. CMS Medicare data shows his patients commonly have high cholesterol, hypertension, and arthritis.
Older · 192dNPPES updated 2025-11-12 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
8929 University Center Ln Suite 201, San Diego, CA 92122-1006
How Does This Doctor Compare?
Generic Rx
↑ Higher = better23.2%
California avg: 83.3 · US avg: 82.8
⚠ Lower than most doctors nationally(-59.6 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
81
Unique beneficiaries
Standard volumePrescription Recipients
61
Patients prescribed
Prescriptions Written
272
Total claims
Total Medicare drug cost: $196k
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 (+3%) — a focus area for this doctor
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+11%) — a focus area for this doctor
Excessive worry or fear that interferes with daily life
US avg: 34.1%↑ More patients than average (+4%) — a focus area for this doctor
Conditions affecting emotional state, including depression and bipolar disorder
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-1%) — less common here
A mood disorder causing persistent sadness and loss of interest in activities
US avg: 31.8%↓ Fewer patients than average (-1%) — less common here
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↓ Fewer patients than average (-3%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$123 received from industry
1 transaction reported in 2024 ·Low 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 John W Adamson's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1962
David Geffen School of Medicine at Ucla
Board certified · Nov 11, 2025
Self-reported via NPPES
64 years in practice
Senior practitioner
Hematologists specialize in blood disorders including anemia, clotting disorders, hemophilia, sickle cell disease, lymphoma, leukemia, and other blood cancers. They manage anticoagulation therapy and blood transfusions.
Taxonomy: 207RH0000X
Education & Training
University of California, Geffen School of Medicine (Class of 1962)
Mailing address
File 53726, Los Angeles, CA 90074-0001
Differs from practice location
Primary hospital affiliation: Acute Care Hospitals
CMS Certification Number: 190008
View hospital on Medicare Care CompareVirtual Internal Medicine Care With John W Adamson
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with John W Adamson for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to San Diego 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 John W Adamson
Dr. Adamson is listed as active in the NPI registry with telehealth listed in San Diego, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (858) 405-2272.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact John W Adamson
Practice Location
8929 University Center Ln Suite 201, San Diego, CA 92122-1006
Mailing Address
File 53726, Los Angeles, CA 90074-0001
This is a provider directory. Contact the office directly to schedule appointments.
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