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

Dr. William T. O'Brien Sr., DO

Individual provider Neuroradiology Physician · NPI 1316046899

Dr. William T. O'Brien Sr., DO is a Diagnostic Radiology in Orlando, Florida. Graduated from Philadelphia College of Osteopathic Medicine in 2003, 23 years ago. Practices with Orlando Health Medical Group Inc, a 2,137-clinician group and accepts Medicare assignment. Licensed in California, Florida and Ohio.

Years since qualifying
23
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
CA, FL, OH
In the registry since
2006
Specialties on file
5
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.

See every abbreviation used in this directory →

Practice location Address checks out

52 W Underwood St
Orlando, FL 32806-1110
Phone: (321) 842-8475
Show map & directions

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

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence OS18400 (FL)
Neuroradiology Physician Taxonomy 2085N0700X · Licence 34.012588 (OH)
Pediatric Radiology Physician Taxonomy 2085P0229X · Licence 34.012588 (OH)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 34.012588 (OH)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 9181 (CA)

Record details

NPI number1316046899
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedSeptember 21, 2006
Last updated in NPPESMarch 30, 2023
Certification dateMarch 30, 2023
Mailing address52 W Underwood St, Orlando, FL 32806-1110

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2003 (23 years in practice)
Group practice Orlando Health Medical Group Inc — 2137 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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