Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Steven Young Ko, MD

Individual provider Internal Medicine Physician · NPI 1194135780

Steven Young Ko, MD is a Pulmonary Disease in Fontana, California. Graduated from Virginia Commonwealth University, School of Medicine in 2014, 12 years ago. Practices with Av Critical Care Inc, a 12-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
12
Trained at
Virginia Commonwealth University, School of Medicine
Licensed in
CA
In the registry since
2014
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9961 Sierra Ave
Fontana, CA 92335-6720
Phone: (909) 427-2608
Fax: (909) 427-5312
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 141088 (CA)

Record details

NPI number1194135780
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 5, 2014
Last updated in NPPESMarch 24, 2016
Mailing address17234 Valley Blvd, Fontana, CA 92335

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE
Medical schoolVIRGINIA COMMONWEALTH UNIVERSITY, SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Av Critical Care Inc — 12 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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