Johnny Sia Gaw, M.D.
Cardiovascular Disease Internal Medicine
Patients across CA can see Johnny Sia Gaw, M.D. in person in Monrovia or via virtual visit — no travel required. With 53+ years of experience, he has been practicing in the Monrovia area. CMS Medicare data shows his patients commonly have hypertension, high cholesterol, and arthritis.
At a glance
- Prescribes opioids less than 42% of reporting doctors in California
- Uses generic medications more than 80% of reporting doctors in California
- Virtual visits available — no app or travel required
Older · 142dNPPES updated 2025-12-15 · verify on CMS
Contact & Location
Practice Location
831 E Huntington Dr Ste 101, Monrovia, CA 91016-6423
How Does This Doctor Compare?
Based on Medicare data, this doctor prescribes opioid pain medications conservatively, favors affordable generic drugs over brand-name ones.
Opioid Rx
↓ Lower = better1.62%
California avg: 5.2 · US avg: 5.1
✓ Higher than most doctors nationally(-3.5 pts)
Typical range among reporting doctors in California1.62% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Generic Rx
↑ Higher = better92.4%
California avg: 83.3 · US avg: 82.8
✓ Higher than most doctors nationally(+9.6 pts)
Better than 80% of reporting doctors in CaliforniaHow often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
59
Unique beneficiaries
Standard volumePrescription Recipients
205
Patients prescribed
Prescriptions Written
2,038
Total claims
Total Medicare drug cost: $174k
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 Hypertension, High Cholesterol, and Arthritis.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+2%) — a focus area for this doctor
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-3%) — less common here
Weakened bones that are more prone to fractures, common in older adults
US avg: 18.1%↑ More patients than average (+11%) — a focus area for this doctor
Excessive worry or fear that interferes with daily life
US avg: 34.1%↓ Fewer patients than average (-12%) — less common here
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↓ Fewer patients than average (-10%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$98 received from industry
5 transactions reported in 2018 ·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 2018, attributed to Johnny Sia Gaw's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Dec 14, 2025
CMS-verified certification date
53 years in practice
Senior practitioner
Cardiologists specialize in diagnosing and treating heart and blood vessel conditions including coronary artery disease, heart failure, arrhythmias, valve disorders, and hypertension. They perform diagnostic procedures such as echocardiograms, stress tests, and cardiac catheterization.
Taxonomy: 207RC0000X
Mailing address
Po Box 35380, Las Vegas, NV 89133-5380
Differs from practice location
Virtual Cardiovascular Disease Care With Johnny Sia Gaw
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Johnny Sia Gaw for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Monrovia 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 Johnny Sia Gaw
NPI records show Dr. Gaw as active with telehealth listed in Monrovia, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (702) 579-3203.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2018 · CMS Physician Comparator. See Data Methodology.
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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact Johnny Sia Gaw
Practice Location
831 E Huntington Dr Ste 101, Monrovia, CA 91016-6423
Mailing Address
Po Box 35380, Las Vegas, NV 89133-5380
This is a provider directory. Contact the office directly to schedule appointments.
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