Where to find Jaesoo Pak, M.D.
- Cerritos Endoscopy Center main office
11845 South St., Cerritos, CA 90703 - First Medical Center
11841 South St., Cerritos, CA 90703
About Dr. Pak
Dr. Jaesoo Pak, M.D. is a gastroenterologist dedicated to providing comprehensive digestive health care and diagnostic evaluation for patients in Cerritos and the surrounding communities. With extensive clinical experience in gastroenterology and internal medicine, Dr. Pak focuses on helping patients understand their digestive health concerns and identify appropriate care options.
His clinical expertise includes the evaluation and management of gastrointestinal conditions, along with diagnostic procedures such as upper endoscopy and colonoscopy. Dr. Pak takes a patient-centered approach, emphasizing clear communication, preventive care, and helping patients make informed decisions about their health.
Dr. Pak earned his medical degree from George Washington University School of Medicine and has completed advanced medical training through residency and fellowship programs. He is committed to providing thoughtful, personalized care while supporting patients throughout their digestive health journey.
Availability & services
- Accepting new patients Jaesoo Pak, M.D. is accepting new patients. More providers accepting new patients in California
Stated by the provider on their verified profile.
Education & Training
Areas of Expertise
Areas of expertise
- Gastroenterology
- Colonoscopy
- Upper Endoscopy (EGD)
- Digestive Health
- Gastrointestinal Disorders
- Inflammatory Bowel Disease (IBD)
- Acid Reflux (GERD)
- Liver Disease
- Colon Cancer Screening
- Abdominal Pain Evaluation
- Gastrointestinal Bleeding Evaluation
Practices, Clinics & Hospitals
Care Philosophy
Dr. Jaesoo Pak believes in providing patient-centered gastroenterology care built on trust, communication, and individualized treatment planning. He takes the time to listen to each patient's concerns, explain available options, and help patients make informed decisions about their digestive health.
His approach focuses on preventive care, early evaluation of symptoms, and delivering compassionate, evidence-based treatment. Dr. Pak strives to create a comfortable environment where patients feel supported throughout their care journey.
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Languages
- English
- Chinese
- Korean
- Spanish
Contact Information
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Primary practice hours Published as structured openingHours data, which assistants read directly. Helps you appear for: "is there a doctor open on Saturday?"
Cerritos Endoscopy Center · 11845 South St., Cerritos, CA 90703
- Mon9:00 AM – 5:00 PM
- Tue9:00 AM – 5:00 PM
- WedClosed
- Thu9:00 AM – 5:00 PM
- Fri9:00 AM – 5:00 PM
- Sat9:00 AM – 1:00 PM
- SunClosed
Practice Locations
11845 South St.
Cerritos, CA 90703
- Mon9:00 AM – 5:00 PM
- Tue9:00 AM – 5:00 PM
- WedClosed
- Thu9:00 AM – 5:00 PM
- Fri9:00 AM – 5:00 PM
- Sat9:00 AM – 1:00 PM
- SunClosed
11841 South St.
Cerritos, CA 90703
- Mon9:00 AM – 5:00 PM
- Tue9:00 AM – 5:00 PM
- Wed9:00 AM – 1:00 PM
- Thu9:00 AM – 5:00 PM
- Fri9:00 AM – 5:00 PM
- Sat9:00 AM – 1:00 PM
- SunClosed
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Conditions & Services
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location.
Conditions
Cancer Prevention
Cancer risk
Environmental health
- Asbestos Exposure
- Contaminated drinking water exposure
- Heat exhaustion and heat stroke
- Radon gas exposure
- Tick bite and Lyme disease risk
- Toxic Mold Exposure
- Wildfire smoke and air pollution exposure
- Workplace Chemical Exposure
General wellness
Heart health
Infectious Disease
Infectious disease
Kidney health
Lifestyle & wellness
Lifestyle health
Longevity
Metabolic & Lifestyle
Occupational health
Occupational Health
Rashes & allergy
Sexual Health
Sexual health
Substance use
Travel health
Wellness and energy
Workplace health
Most searched conditions
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Addiction & habits
Cancer screening
Cancer Screening
Checkups & exams
Chronic illness
Diagnostics & screening
Environmental health
Fitness & body composition
Heart & Circulation
- Blood Pressure Check
- Heart monitor
Heart & circulation
Heart health
Hospital-based procedures
Imaging referral
Immunizations
Infection & Microbiology Tests
Lifestyle & Prevention
Longevity
Lower endoscopy
Lungs & Breathing
Metabolic & Weight
Metabolic health
Occupational health
Occupational Health
Office Procedures
Preventive and evaluation
Preventive imaging
Preventive screening
Routine Blood Tests
Screening & labs
Screening and diagnostic testing
- Blood pressure screening
- Cancer screening and prevention planning
- Diabetes and prediabetes screening
- EKG
- Spirometry
Screenings & Diagnostics
Travel Health
Travel medicine
Wellness
Wellness & Screening
Workplace health
Skin growths
Sleep
Most searched procedures
Bones & Joints
Brain and nerves
Digestive
Exams & Consultations
Lab tests
Minor procedures
- Ingrown toenail removal
- Suture removal
Office procedures
Pain management
Preventive & Routine Care
Sexual health
Procedures Most Often Billed to Medicare
10,575 services · 4,313 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Microscopic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43252 |
337 | Too few peers to compare |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
332 | More than most peers in Internal Medicine |
| X-ray of chest, 2 views | Imaging | 71046 |
272 | More than most peers in Internal Medicine |
| Ultrasound scan of head and neck soft tissue | Imaging | 76536 |
164 | More than most peers in Internal Medicine |
| Complete ultrasound scan of abdomen | Imaging | 76700 |
160 | More than most peers in Internal Medicine |
| Complete ultrasound scan of pelvis | Imaging | 76856 |
93 | More than most peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
367 | More than most peers in Internal Medicine |
| Ultrasound of both sides of head and neck blood flow | Treatment | 93880 |
159 | More often than most peers in Internal Medicine |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
138 | More often than most peers in Internal Medicine |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
92 | More often than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists in Cerritos 8
Same specialty, same city.
Trained at George Washington University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1992 at George Washington University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Common questions
Do I need a referral to schedule an appointment with Dr. Pak?
Referral requirements may vary depending on your insurance plan. Please contact our office to confirm whether a referral is needed before scheduling your appointment.
Answered by the provider
What should I bring to my appointment?
Please bring your photo ID, insurance card, a list of current medications, relevant medical records, and any previous test results or imaging reports related to your digestive health concerns.
Answered by the provider
What conditions does Dr. Pak treat?
Dr. Pak provides gastroenterology care for a range of digestive health concerns, including acid reflux, abdominal pain, gastrointestinal disorders, liver conditions, and colon cancer screening needs. He also performs diagnostic procedures such as colonoscopy and upper endoscopy.
Answered by the provider
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