Mark Myungjae Song, MD, PHD
Mark Myungjae Song is a Nephrology Internal Medicine specialist based in Los Angeles, CA with over 42 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: NEPHROLOGY
With over 42 years in internal medicine, Mark Myungjae Song, MD, PHD is a long-established nephrologist in Los Angeles. He has been practicing since 2006 — over 42 years. CMS Medicare data shows his patients commonly have hypertension, diabetes, and high cholesterol. CMS MIPS quality score: 100/100 (2023).
At a glance
- Prescribes opioids less than 51% of reporting doctors in California
- Federal MIPS score higher than 93% of MIPS-scored doctors in California
- Virtual visits available — no app or travel required
Older · 5289dNPPES updated 2011-12-01 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
3663 W 6th St Ste 307, Los Angeles, CA 90020-3050
How Does This Doctor Compare?
Based on Medicare data, this doctor scores better than 93% of doctors in California on federal quality measures, prescribes opioid pain medications conservatively.
MIPS Score
2023100/100
California avg: 78.6 · US avg: 83.6
✓ Higher than most doctors nationally(+16.4 pts)
Top 7% of MIPS-scored doctors in CaliforniaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Opioid Rx
↓ Lower = better0.79%
California avg: 5.2 · US avg: 5.1
✓ Higher than most doctors nationally(-4.3 pts)
Typical range among reporting doctors in California0.79% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Generic Rx
↑ Higher = better75.5%
California avg: 83.3 · US avg: 82.8
⚠ Lower than most doctors nationally(-7.3 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
713
Unique beneficiaries
High volumePrescription Recipients
1,634
Patients prescribed
Prescriptions Written
38,881
Total claims
Total Medicare drug cost: $9.88M
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, Diabetes, and High Cholesterol.
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
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ More patients than average (+41%) — 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
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+26%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-1%) — less common here
Weakened bones that are more prone to fractures, common in older adults
US avg: 18.1%↑ More patients than average (+15%) — a focus area for this doctor
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$3.0k received from industry
136 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 Mark Myungjae Song's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
42 years in practice
Senior practitioner
Nephrologists treat kidney diseases including chronic kidney disease, kidney failure requiring dialysis, glomerulonephritis, kidney stones, and electrolyte disorders. They manage dialysis access and kidney transplant follow-up.
Taxonomy: 207RN0300X
Mailing address
1401 S Brookhurst Rd Ste 100, Fullerton, CA 92833-4492
Differs from practice location
Primary hospital affiliation: Acute Care Hospitals
CMS Certification Number: 240206
View hospital on Medicare Care CompareVirtual Internal Medicine Care With Mark Myungjae Song
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mark Myungjae Song for blood pressure monitoring, diabetes check-ins, cholesterol management — no travel to Los Angeles 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 Mark Myungjae Song
NPI records show Dr. Song as active with telehealth listed in Los Angeles, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (213) 736-1884.
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 Mark Myungjae Song
Practice Location
3663 W 6th St Ste 307, Los Angeles, CA 90020-3050
Mailing Address
1401 S Brookhurst Rd Ste 100, Fullerton, CA 92833-4492
This is a provider directory. Contact the office directly to schedule appointments.
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