Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Brian Christopher McMaster, DO

Individual provider Emergency Medicine Physician · NPI 1427403591

Dr. Brian Christopher McMaster, DO practises Emergency Medicine in Orlando, Florida. Qualified in 2016, 10 years ago. Practices with Guidewell Emergency Medicine Doctors, LLC, a 90-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Florida.

Years since qualifying
10
Licensed in
FL
In the registry since
2016
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

855 Outer Rd
Orlando, FL 32814-6652
Phone: (407) 579-3927
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 855 Outer Rd, Orlando, FL 32814-6652 — (407) 579-3927

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence OS15539 (FL)

Record details

NPI number1427403591
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedApril 26, 2016
Last updated in NPPESJuly 15, 2024
Certification dateJuly 15, 2024

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Guidewell Emergency Medicine Doctors, Llc — 90 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients543
Services billed 784 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Adventhealth Orlando Hospital · Orlando, FL

Colleagues at Guidewell Emergency Medicine Doctors, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 90 clinicians in the practice; 12 are shown here.

Other providers in Orlando