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

Ian B Butler, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1053632034

Ian B Butler, MD is an Emergency Medicine in Oceanside, California. Graduated from University of Michigan Medical School in 2005, 21 years ago. Practices with Cep America - Intensivists PC, a 107-clinician group and accepts Medicare assignment. Licensed in California, Pennsylvania and Texas.

Years since qualifying
21
Trained at
University of Michigan Medical School
Licensed in
CA, PA, TX
In the registry since
2010
Specialties on file
4
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

3231 Waring Ct Ste D
Oceanside, CA 92056-4510
Phone: (760) 941-0221
Fax: (760) 941-0905
Show map & directions

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

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence C137716 (CA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence H5896 (TX)
Critical Care Medicine (Anesthesiology) Physician Taxonomy 207LC0200X · Licence MD439803 (PA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence MD439803 (PA)

Record details

NPI number1053632034
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 14, 2010
Last updated in NPPESSeptember 1, 2022
Certification dateSeptember 1, 2022
Mailing address3231 Waring Ct Ste D, Oceanside, CA 92056-4510

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 2005 (21 years in practice)
Group practice Cep America - Intensivists Pc — 107 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Oceanside