Michael Warren Fitzgibbons, MD
Infectious Disease Internal Medicine
Michael Warren Fitzgibbons is an Infectious Disease Internal Medicine specialist based in Santa Ana, CA with over 50 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INTERNAL MEDICINE
With over 50 years in internal medicine, Michael Warren Fitzgibbons, MD is a long-established infectious disease specialist in Santa Ana. A Georgetown University School of Medicine graduate since 1976, he brings 50+ years of experience. CMS Medicare data shows his patients commonly have high cholesterol, hypertension, and arthritis.
Older · 4801dNPPES updated 2013-04-01 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
1913 E 17th St Suite 102, Santa Ana, CA 92705-8627
How Does This Doctor Compare?
Generic Rx
↑ Higher = better74.3%
California avg: 83.3 · US avg: 82.8
⚠ Lower than most doctors nationally(-8.5 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
96
Unique beneficiaries
Standard volumePrescription Recipients
60
Patients prescribed
Prescriptions Written
389
Total claims
Total Medicare drug cost: $231k
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 (+1%) — 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 (-2%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+10%) — a focus area for this doctor
Excessive worry or fear that interferes with daily life
US avg: 34.1%Conditions affecting emotional state, including depression and bipolar disorder
A mood disorder causing persistent sadness and loss of interest in activities
US avg: 31.8%A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ Fewer patients than average (-4%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-2%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$431 received from industry
6 transactions 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 Michael Warren Fitzgibbons's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1976
Georgetown University School of Medicine
50 years in practice
Senior practitioner
Infectious disease specialists diagnose and treat complex infections including HIV/AIDS, hepatitis, tuberculosis, antibiotic-resistant infections (MRSA), post-surgical infections, and travel-related illnesses. They also provide pre-travel vaccination counseling and manage infections in immunocompromised patients.
Taxonomy: 207RI0200X
Education & Training
Georgetown University School of Medicine (Class of 1976)
Mailing address
Po Box 62316, Irvine, CA 92602-6077
Differs from practice location
Virtual Infectious Disease Care With Michael Warren Fitzgibbons
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Michael Warren Fitzgibbons for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to Santa Ana 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 Michael Warren Fitzgibbons
Dr. Fitzgibbons is listed as active in the NPI registry with telehealth listed in Santa Ana, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (714) 541-3744.
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 Michael Warren Fitzgibbons
Practice Location
1913 E 17th St Suite 102, Santa Ana, CA 92705-8627
Mailing Address
Po Box 62316, Irvine, CA 92602-6077
This is a provider directory. Contact the office directly to schedule appointments.
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