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

Dr. Nathan Khoa Nguyen, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1861636615

Dr. Nathan Khoa Nguyen, MD is an Internal Medicine in Walnut Creek, California. Graduated from State University of Ny Upstate Medical University in 2007, 19 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group and accepts Medicare assignment. Licensed in California and Oregon.

Years since qualifying
19
Trained at
State University of Ny Upstate Medical University
Licensed in
CA, OR
In the registry since
2009
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1425 S Main St Medical Ofc Bldg 1ST Fl
Walnut Creek, CA 94596-5318
Phone: (925) 295-4050
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A107250 (CA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 154500 (OR)

Record details

NPI number1861636615
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 23, 2009
Last updated in NPPESNovember 30, 2021
Certification dateNovember 11, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolSTATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Graduated 2007 (19 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations10 on file with Medicare

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