Summary

Dr. William Sim is an internal medicine physician who earned his medical degree from Stanford University School of Medicine. He completed his residency training at UCLA Medical Center and brings 36 years of experience to his practice. Dr. Sim is fluent in Spanish, Korean, and English.

Dr. Sim practices at Downey Regional Medical Center in Downey, California. He specializes in managing hypertension and related cardiovascular conditions, including hypertensive emergencies. His expertise includes performing complete blood counts and general blood testing to help diagnose and monitor various health conditions. Patients have given Dr. Sim an average rating of 4.2 stars for his care.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.2
  • 36 years of experience
  • 68 insurance plans accepted
  • speaks Spanish, Korean, English
  • Ucla Medical Center
  • 13 written reviews
  • 1 specialty
  • 6 areas of expertise
  • 1 board certification
  • 1 hospital affiliation
  • 2 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. William Chunghun Sim has 2 locations

Frischer Medical Group

11480 Brookshire Ave Ste 200Downey, CA 90241
Mon7:30 am - 4:30 pm
Tue7:30 am - 4:30 pm
Wed7:30 am - 4:30 pm
Thu7:30 am - 4:30 pm
Fri7:30 am - 4:30 pm
SatClosed
SunClosed

Downey Regional Medical Center

11500 Brookshire AveDowney, CA 90241

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Dr. William Chunghun Sim, MDMarcel Benjamin, PharmDKarthikeyan Viswanathan, DODr. George Mousa, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
4.2 
36 Years of Experience 12 Years of Experience 17 Years of Experience
No Virtual Visit Option No Virtual Visit Option Virtual Visit Available Virtual Visit Available
Speaks Spanish, Korean, English Speaks English Speaks English, Tamil
Downey , CACosta Mesa , CAPalo Alto , CAUpland , CA
Med School: Stanford University School Of Medicine Med School: Bassett Medical Center - Cooperstown, New York Med School: University Of Aleppo Faculty Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. William Chunghun Sim

  • Accepts Medicaid
  • AARP
  • Aetna
  • Aetna - HMO
  • Aetna - Medicare
  • Aetna Better Health
  • Alignment Health Plan
  • Alignment Health Plan - HMO
  • AltaMed Senior BuenaCare (PACE)
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Illinois
  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross Blue Shield of Minnesota
  • Blue Cross Blue Shield of Texas
  • BLUE CROSS of CALIFORNIA
  • BLUE CROSS of CALIFORNIA - HMO
  • Blue Shield of California
  • Blue Shield of California - HMO
  • Brand New Day
  • Bright Health
  • CalOptima
  • CareFirst Blue Cross Blue Shield
  • CareMore
  • CareMore - HMO
  • CareSource
  • Cigna
  • Commonwealth Care Alliance
  • Contra Costa Health Plan
  • Health Alliance
  • Health Net
  • Health Net - HMO
  • Health Net - Medicaid
  • HealthFirst (NY)
  • HealthNow
  • HealthPartners
  • HealthScope Benefits
  • Humana
  • Humana - HMO
  • Kaiser Permanente
  • L.A. Care Health Plan
  • L.A. Care Health Plan - HMO
  • L.A. Care Health Plan - Medicaid (Managed)
  • Liberty Mutual - Workers’ Compensation
  • Magellan Health
  • Medicaid - Medicaid
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Mercy Care
  • Meritain Health
  • Molina Healthcare
  • Molina Healthcare - Medicaid (Managed)
  • Nippon Life Benefits
  • Optum Health
  • Oscar Health Insurance
  • Partnership HealthPlan of California
  • PreferredOne
  • Priority Health
  • Sanford Health Plan
  • SCAN Health Plan
  • SCAN Health Plan - HMO
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - PPO
  • University of Arizona Health Plans
  • Wellcare
  • Western Health Advantage

Medical Specialties

Dr. William Chunghun Sim has the following specialty

Specialty Expertise

Dr. William Chunghun Sim has the following 6 areas of expertise

  • Check-up
  • Heartburn
  • Immunization
  • Physical
  • Vaccination
  • Weight Loss

Certifications, License, & Education

36 Years Experience

Dr. William Chunghun Sim holds an active medical license in the state of California.

Medical License

Medical Doctor with an active medical license in the state of California that expires in 2027.

Education & Training

Residency

Completed their residency at Ucla Medical Center.

Medical School

Graduated from Stanford University School Of Medicine in 1990.

NPI Number

Dr. Sim's NPI number is 1437256906.

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Frequently Asked Questions

How can I make an appointment with Dr. William Sim?
You can find contact information for Dr. William Sim here on Vitals.
Does Dr. William Sim accept virtual/telehealth appointments?
Dr. William Sim has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. William Sim's office located?
Dr. William Sim's office is located at 11480 Brookshire Ave Ste 200, Downey, CA, 90241.
Which hospitals is Dr. William Sim affiliated with?
Dr. William Sim is affiliated with Downey Regional Medical Center.
What languages does Dr. William Sim speak?
Dr. William Sim speaks Spanish, Korean, and English.

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