Alexander N Greiner, M.D.
Alexander N Greiner is an Allergy & Immunology specialist based in San Diego, CA with over 28 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
With over 28 years in allergy & immunology, Alexander N Greiner, M.D. is a long-established allergy & immunology specialist in San Diego. A State University of Ny Upstate Medical University graduate since 1998, he brings 28+ years of experience. CMS Medicare data shows his patients commonly have high cholesterol, hypertension, and asthma.
Older · 3722dNPPES updated 2016-03-14 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
5776 Ruffin Rd, San Diego, CA 92123-1013
How Does This Doctor Compare?
Generic Rx
↑ Higher = better46.1%
California avg: 83.3 · US avg: 82.8
⚠ Lower than most doctors nationally(-36.7 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
40
Unique beneficiaries
Boutique practicePrescription Recipients
54
Patients prescribed
Prescriptions Written
399
Total claims
Total Medicare drug cost: $226k
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 Asthma.
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%↑ More patients than average (+3%) — a focus area for this doctor
A condition causing airway inflammation, wheezing, and difficulty breathing
US avg: 13.3%↑ More patients than average (+57%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+1%) — a focus area for this doctor
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-4%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$41.4k received from industry
35 transactions reported in 2024 ·Very High 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 Alexander N Greiner's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1998
State University of Ny Upstate Medical University
28 years in practice
Experienced
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
Taxonomy: 207K00000X
Education & Training
State University of Ny Upstate Medical University (Class of 1998)
Mailing address
3020 Childrens Way Mc5003, San Diego, CA 92123-4223
Differs from practice location
Virtual Allergy & Immunology Care With Alexander N Greiner
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Alexander N Greiner for cholesterol management, blood pressure monitoring, asthma reviews — 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 Alexander N Greiner
Dr. Greiner 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) 292-1144.
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 Alexander N Greiner
Practice Location
5776 Ruffin Rd, San Diego, CA 92123-1013
Mailing Address
3020 Childrens Way Mc5003, San Diego, CA 92123-4223
This is a provider directory. Contact the office directly to schedule appointments.
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