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

Dr. James A. Pierre Jr., MD, MPH

Individual provider Public Health & General Preventive Medicine Physician · NPI 1003194309

Dr. James A. Pierre Jr., MD, MPH is an Addiction Medicine in Simi Valley, California. Qualified in 2007, 19 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in California, Massachusetts and Michigan.

Years since qualifying
19
Licensed in
CA, MA, MI
In the registry since
2011
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MPH — Master of Public Health
A graduate degree in population health.

See every abbreviation used in this directory →

Practice location Address checks out

3855 Alamo St Ste A
Simi Valley, CA 93063-2104
Phone: (504) 813-3864
Show map & directions

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

Additional practice locations (2)

  • 100 Sudbury St Unit 2710, Boston, MA 02114-2941 — (504) 813-3864
  • 636 Waymarket Dr, Ann Arbor, MI 48103-6441 — (504) 813-3864

Specialties & licences

Addiction Medicine (Preventive Medicine) Physician (primary) Taxonomy 2083A0300X · Licence C180637 (CA)
Public Health & General Preventive Medicine Physician Taxonomy 2083P0901X · Licence 287401 (MA)
General Practice Physician Taxonomy 208D00000X · Licence 4301501025 (MI)

Record details

NPI number1003194309
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MPH
Sole proprietorYes
NPI enumeratedAugust 3, 2011
Last updated in NPPESJanuary 19, 2023
Certification dateJanuary 19, 2023

Medicare enrollment

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

Medicare specialtyADDICTION MEDICINE
Also practisesPREVENTIVE MEDICINE
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount