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Edit this profileAt a glance
- 9961 Sierra Ave, Fontana, CA 92335
About Dr. Ko
Based in Fontana, CA, Steven Y. Ko, MD is listed in the NPI registry under pulmonary disease. Steven graduated from Virginia Commonwealth University, School of Medicine in 2014. Steven is also listed as specializing in internal medicine. According to Medicare claims data, Steven cared for 125 Medicare patients across 205 services. The services billed most often include critical care, first 30-74 minutes. NPI 1194135780 identifies this record in the national registry.
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
- (909) 427-2608
- Email not available
Practice Locations
9961 SIERRA AVE
Fontana, CA 92335
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
Diagnostic findings
- Swollen Chest Lymph Nodes
Environmental lung diseases
Genetic conditions
- Alpha-1 antitrypsin deficiency
- Cystic fibrosis in adults
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
- Asbestos lung damage
- Black lung disease
- Silicosis
- Vaping lung illness
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
Airway management
- Tracheostomy care
Biopsies
- Lung Cryobiopsy
Biopsies & diagnostics
- EBUS lung biopsy
- Needle biopsy of lung
- Robotic lung biopsy
Breathing tests
- 6-minute walk test
- Asthma challenge test
- Cardiopulmonary Exercise Testing (CPET)
- Exhaled nitric oxide test
Cancer diagnostic procedures
- Endobronchial Ultrasound Staging
Consultations
- Pre-op lung clearance
Counseling & prevention
Critical care
- Ventilator Weaning Evaluation
Diagnostic procedures
- Lung Wash Procedure
Drainage care
- Pleural Catheter Removal
Imaging
- Chest CT Scan
- Chest X-Ray
- Lung Perfusion Scan
Interventional procedures
- Bronchial thermoplasty
- Lung valve placement for emphysema
Lab tests
- Arterial blood gas test
- Sputum test
Lung tests
- Pre- And Post-Bronchodilator Test
Medications
- Severe Asthma Biologics
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
- Foreign Object Removal From Airway
- Windpipe stent placement
Rehabilitation
Screening
- Low-dose CT lung cancer screening
Sleep equipment
Sleep medicine
- At-home sleep test
- BiPAP therapy
- CPAP titration
- Overnight oxygen study
- Sleep study
Sleep treatments
- Sleep Apnea Dental Device Evaluation
Specialist evaluations
- Lung Transplant Evaluation
- Lung Volume Reduction Evaluation
Specialized testing
- High-Altitude Oxygen Test
Treatments
Procedures Most Often Billed to Medicare
205 services · 125 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Critical care, first 30-74 minutes | Office visit | 99291 |
205 | More than most 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.
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 Fontana 5
Same specialty, same city.
Trained at Virginia Commonwealth University, School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2014 at Virginia Commonwealth University, School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Ko's specialty?
Dr. Ko is a lung specialist in Fontana, 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. Ko?
Dr. Ko is listed at 9961 Sierra Ave, Fontana, CA 92335. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Ko?
The number on file is (909) 427-2608. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Ko's NPI number?
Dr. Ko's National Provider Identifier is 1194135780. 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. Ko's medical education?
Dr. Ko attended Virginia Commonwealth University, School of Medicine, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Ko been practicing?
Dr. Ko has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Ko known for?
According to Medicare billing data, Dr. Ko the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Ko confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ko. If this is you, claiming it is free.
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Guide.md listings do not constitute medical advice or an endorsement.