Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Francis X O'Brien, MD

Individual provider Internal Medicine Physician · NPI 1558348441

Francis X O'Brien, MD practises Internal Medicine in Winston Salem, North Carolina. Graduated from Temple University School of Medicine in 1985, 41 years ago. Practices with Wake Forest University Health Sciences, a 2,621-clinician group and accepts Medicare assignment. Licensed in North Carolina.

Years since qualifying
41
Trained at
Temple University School of Medicine
Licensed in
NC
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 Partly verified

Some contact details are missing from the federal record.

Medical Center Blvd
Winston Salem, NC 27157-0001 Not confirmed with CMS for 18 years — call before visiting
Phone: (336) 716-2255
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 9801426 (NC)

Record details

NPI number1558348441
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 30, 2005
Last updated in NPPESMay 15, 2008

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolTEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1985 (41 years in practice)
Group practice Wake Forest University Health Sciences — 2621 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 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 patients228
Services billed 907 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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.

Colleagues at Wake Forest University Health Sciences

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2621 clinicians in the practice; 12 are shown here.

Other providers in Winston Salem