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Edit this profileAt a glance
- 416 Chalan San Antonio Rd, Good Samaritan Clinic, Tamuning, GU 96913
About Dr. Chang
Young Chang, MD practices internal medicine in Tamuning, GU. According to Medicare claims data, Young cared for 934 Medicare patients across 2,147 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and administration of influenza virus vaccine. The provider's National Provider Identifier (NPI) is 1639218290.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
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.
Contact Information
- (671) 646-2984
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
416 CHALAN SAN ANTONIO RD GOOD SAMARITAN CLINIC
Tamuning, GU 96913
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Cancer Prevention
- Family cancer risk
Cancer risk
- Family History Of Cancer
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
- Chronic Inflammation
Heart health
- Heart Disease Risk
Infectious Disease
- Animal bite and rabies exposure
- Hepatitis B and C exposure
Infectious disease
- Measles and mumps exposure
- Traveler's diarrhea
- Shingles
Kidney health
- Early Kidney Damage
Lifestyle & wellness
- Chronic Stress And Burnout
Lifestyle health
- Unhealthy diet and nutrient deficiency
Longevity
- Accelerated Biological Aging
Metabolic & Lifestyle
- Lack of physical activity
Occupational health
- Asbestos and mineral dust exposure
- Work-Related Back Strain
Occupational Health
- Noise-induced hearing loss risk
Rashes & allergy
- Poison Ivy
Sexual Health
- HIV risk and exposure
Sexual health
- STI Risk And Exposure
Substance use
- Vaping And Nicotine Addiction
Travel health
- Altitude sickness
- Travel-related Infection Risk
Wellness and energy
- Chronic fatigue
Workplace health
- Work-related Injury
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
- High blood pressure
- High cholesterol
Digestive and liver
- Acid reflux
- Fatty liver disease
- IBS
Endocrine, blood, and bone
- Gout
Kidney and urinary
- Chronic kidney disease
- Enlarged prostate
Respiratory
- Acute bronchitis
- Asthma
- COPD
Blood & Circulation
- Blood clots
Blood disorders
- Anemia
Brain & Nerves
- Alzheimer's disease
Brain and nerves
- Vertigo
Cardiac and vascular
- AFib
Digestive
- Diverticulitis
Heart & Circulation
- Heart disease
Infections
- Impetigo
Kidney & Bladder
- Overactive Bladder and Leakage
Lungs & Breathing
- Sleep apnea
Mental Health
- Generalized anxiety disorder
- Insomnia and Sleep Problems
Neurologic and behavioral
- Depression
- Migraines
Pain
- Back pain
Rheumatologic and pain
- Osteoarthritis
Procedures & services
Addiction & habits
- Alcohol Reduction Counseling
Cancer screening
- Colon Cancer Screening Referral
- Lung cancer screening consult
- Mammogram Referral
Cancer Screening
- Hereditary cancer risk assessment
Checkups & exams
- Annual Wellness Exam
- Executive Physical Exam
Chronic illness
- Medication list review
- Post-hospital follow-up visit
Diagnostics & screening
- TB Skin Test
Environmental health
- Heavy Metal Blood Test
- Lead blood test
- Mold Toxicity Testing
Fitness & body composition
- VO2 Max Test
Heart & Circulation
- Blood Pressure Check
- Heart monitor
Heart & circulation
- Blood pressure check and medication review
Heart health
- Cardiac Stress Test Referral
Hospital-based procedures
- Inpatient medical management
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
- Hepatitis Screening And Vaccine
- Tetanus shot
Infection & Microbiology Tests
- STI and STD Screening
- H. Pylori Breath Test
Lifestyle & Prevention
- Exercise prescription and counseling
- Medical weight loss counseling
Longevity
- Biological Age Test
Lower endoscopy
- Screening colonoscopy
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Metabolic health
- Continuous Glucose Monitor Prescription
Occupational health
- Breathing test for work
- Food handler medical clearance
- Workplace breath alcohol test
Occupational Health
- Needlestick exposure evaluation
- Respirator clearance exam and fit testing
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Preventive and evaluation
- Preoperative medical clearance
- Medication management
- Post-hospital transitional care
Preventive imaging
- Abdominal Aortic Aneurysm Screening
- Full Body MRI Scan
Preventive screening
- Fall risk screening
Routine Blood Tests
- Hemoglobin A1c Test
Screening & labs
- Genetic Health Risk Testing
- Heart Calcium Score
- Hormone Panel Testing
Screening and diagnostic testing
- Blood pressure screening
- Cancer screening and prevention planning
- Diabetes and prediabetes screening
- EKG
- Spirometry
Screenings & Diagnostics
- Diabetes Screening and A1C Test
- Bone Density Scan Referral
Travel Health
- Travel vaccines and health advice
Travel medicine
- Altitude sickness prevention pills
- Typhoid vaccine
Wellness
- Body Composition Analysis
Wellness & Screening
- Heart disease risk assessment
Workplace health
- Ergonomic Workstation Evaluation
- Respirator Fit Testing
- Return To Work Clearance
Skin growths
- Skin Tag Removal
Sleep
- At-home sleep test
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Bones & Joints
- Trigger Point Injections
Brain and nerves
- Epley Maneuver
Digestive
- Endoscopy
Exams & Consultations
- Pre-Op Clearance Exam
Lab tests
- Urinalysis
Minor procedures
- Ingrown toenail removal
- Suture removal
Office procedures
- Cryotherapy for skin lesions
- Earwax removal
- Incision and drainage of an abscess
- Skin biopsy
Pain management
- Knee Joint Injection
Preventive & Routine Care
- Smoking cessation counseling
Sexual health
- STI Testing
Procedures Most Often Billed to Medicare
2,147 services · 934 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Influenza vaccine, trivalent, 0.5 ml dosage | Treatment | 90658 |
110 | More than most peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
27 | As often as other peers in Internal Medicine |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
16 | Less often than most peers in Internal Medicine |
| Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage | Treatment | 90686 |
11 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
1,402 | More than most peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
363 | More often than most peers in Internal Medicine |
| Administration of influenza virus vaccine | Billing code | G0008 |
124 | More than most peers in Internal Medicine |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
57 | More often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
22 | Less often than most peers in Internal Medicine |
| Administration of pneumococcal vaccine | Billing code | G0009 |
15 | Less 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.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other internists in Tamuning 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 9 related providers in 2 groups
Class of 1986 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Influenza vaccine, trivalent, 0.5 ml dosage 1
Providers in GU who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Chang?
Dr. Chang is an internist in Tamuning, GU. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
What is Dr. Chang's address?
Dr. Chang is listed at 416 Chalan San Antonio Rd Good Samaritan Clinic, Tamuning, GU 96913. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Chang?
The number on file is (671) 646-2984. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Chang's NPI number?
Dr. Chang's National Provider Identifier is 1639218290. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Chang train?
Dr. Chang attended Other, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chang been practicing?
Dr. Chang has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Chang perform?
According to Medicare billing data, Dr. Chang provides treatments such as influenza vaccine, trivalent, 0.5 ml dosage and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Chang confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chang. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.