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

Colleen Ann Johnson, MD

Individual provider Emergency Medicine Physician · NPI 1720079049

Colleen Ann Johnson, MD is an Emergency Medicine in Pleasanton, California. Graduated from Stanford University School of Medicine in 2001, 25 years ago. Practices with Pleasanton Emergency Medical Group, a 38-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
25
Trained at
Stanford University School of Medicine
Licensed in
CA
In the registry since
2005
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

5555 W Las Positas Blvd
Pleasanton, CA 94588-4000
Phone: (209) 342-2300
Fax: (209) 524-4240
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A81584 (CA)

Record details

NPI number1720079049
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 4, 2005
Last updated in NPPESJuly 13, 2026
Mailing address4301 North Star Way, Modesto, CA 95356

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolSTANFORD UNIVERSITY SCHOOL OF MEDICINE
Graduated 2001 (25 years in practice)
Group practice Pleasanton Emergency Medical Group — 38 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Pleasanton