Physician Profile
Jiwoon Chang, MD
Unclaimed ProfileAbout Dr. Chang
Jiwoon Chang, MD practices pulmonary disease in Stanford, CA. Jiwoon is a 2015 graduate of University of California, Geffen School of Medicine. Jiwoon is also listed as specializing in internal medicine and critical care medicine. According to Medicare claims data, Jiwoon cared for 981 Medicare patients across 1,049 services. The services billed most often include aspiration of initial secretion of lung airway using an endoscope, irrigation and suction of lung airways to obtain cells using an endoscope, and biopsy of lobe of lung using an endoscope, 1 lobe.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (650) 723-4000
- Email not available
Practice Locations
300 PASTEUR DR
Stanford, CA 94305
550 1st Ave
New York, NY 10016
Conditions Commonly Evaluated or Treated
Within Pulmonary Disease 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
Most searched conditions
Airway disorders
Blood vessel disorders
Critical care
- Respiratory failure
Diagnostic findings
Environmental lung diseases
Genetic conditions
Infections
- Community-acquired pneumonia
- Fungal lung infection
- Legionnaires' Disease
- Lung abscess
- NTM lung infection
- Severe Pneumonia
- Tuberculosis
- Valley fever
- Walking Pneumonia in Children
- Whooping Cough
Inflammatory conditions
Lung growths
Occupational & environmental
Pleural disorders
- Collapsed lung
- Fluid around the lungs
- Pain when breathing
Post-infection conditions
Sleep disorders
- Excessive daytime sleepiness
- Shallow Breathing In Sleep
- Snoring
- Upper Airway Resistance Syndrome
- Waking Up Gasping Or Choking
Structural lung conditions
Symptoms
- Blue Baby Syndrome
- Chest congestion
- Coughing up blood
- Low oxygen levels
- Rapid Breathing
- Severe asthma attack
- Wheezing
Procedures & services
Most searched procedures
- Bronchoscopy
- Oxygen therapy management
- Pulmonary function test
- Spirometry
Airway care
- Trach Tube Care and Changing
Airway management
- Tracheostomy care
Biopsies
Biopsies & diagnostics
Breathing tests
- 6-minute walk test
- Asthma challenge test
- Cardiopulmonary Exercise Testing (CPET)
- Exhaled nitric oxide test
Cancer diagnostic procedures
Consultations
Counseling & prevention
- Inhaler technique instruction
- Smoking cessation counseling
Critical care
Diagnostic procedures
Drainage care
Imaging
Interventional procedures
Lab tests
Lung tests
Medications
Monitoring
- Asthma Action Plan Consultation
- Continuous Pulse Oximetry
Pleural procedures
- Chest tube insertion
- Draining lung fluid
- Medical thoracoscopy
- Permanent chest drain insertion
- Pleural sealing procedure
Procedures
Rehabilitation
Screening
Sleep equipment
Sleep medicine
Sleep treatments
Specialist evaluations
Specialized testing
Treatments
- Breathing Treatment
Procedures Most Often Billed to Medicare
1,049 services · 981 patients · 22 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration of initial secretion of lung airway using an endoscope | Procedure | 31645 |
215 | More than most peers in Pulmonary Disease |
| Irrigation and suction of lung airways to obtain cells using an endoscope | Procedure | 31624 |
149 | More than most peers in Pulmonary Disease |
| Biopsy of lobe of lung using an endoscope, 1 lobe | Procedure | 31628 |
86 | More than most peers in Pulmonary Disease |
| Computer-assisted image-guided navigation of lung airways using an endoscope | Procedure | 31627 |
73 | More than most peers in Pulmonary Disease |
| Exam of lung airways and sampling of lymph nodes using an endoscope and ultrasound guidance, 1-2 lymph nodes | Procedure | 31652 |
59 | More than most peers in Pulmonary Disease |
| Exam of lung airways and sampling of lymph nodes using an endoscope and ultrasound guidance, 3 or more lymph nodes | Procedure | 31653 |
52 | More than most peers in Pulmonary Disease |
| Needle biopsy of windpipe cartilage, airway, and/or lung using an endoscope | Procedure | 31629 |
47 | More often than most peers in Pulmonary Disease |
| Placement of radiation therapy markers into lung airways using an endoscope | Procedure | 31626 |
24 | As often as other peers in Pulmonary Disease |
| Aspiration of subsequent secretions of lung airway using an endoscope during same hospital stay | Procedure | 31646 |
17 | Less often than most peers in Pulmonary Disease |
| Destruction of growth or narrowing of lung airway using an endoscope | Procedure | 31641 |
17 | As often as other peers in Pulmonary Disease |
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.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
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 lung specialists in Stanford 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2015 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration of initial secretion of lung airway using an endoscope 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Chang's specialty?
Dr. Chang is a lung specialist in Stanford, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pulmonary Disease”.
NPI registry
Where can I find Dr. Chang?
Dr. Chang is listed at 300 Pasteur Dr, Stanford, CA 94305. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Chang?
The number on file is (650) 723-4000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chang's NPI number?
Dr. Chang's National Provider Identifier is 1952780694. 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
What is Dr. Chang's medical education?
Dr. Chang attended University of California, Geffen School of Medicine, graduating in 2015. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chang been practicing?
Dr. Chang has 11 years experience. Calculated from a graduation year of 2015, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Chang known for?
According to Medicare billing data, Dr. Chang performs procedures including aspiration of initial secretion of lung airway using an endoscope, irrigation and suction of lung airways to obtain cells using an endoscope and biopsy of lobe of lung using an endoscope, 1 lobe; reads or performs imaging such as 3d radiographic procedure with computerized image postprocessing and review by radiologist of ct guidance for needle placement, 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
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.