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

Dr. William Francis O'Brien, MD

Individual provider Maternal & Fetal Medicine Physician · NPI 1700860558

Dr. William Francis O'Brien, MD is a Maternal & Fetal Medicine Physician in Fort Myers, Florida. Licensed in Florida. Registered with an NPI since 2005.

Licensed in
FL
In the registry since
2005
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

9981 Healthpark Cr Ste 159
Fort Myers, FL 33908
Phone: (239) 481-5477
Fax: (239) 481-5892
Show map & directions

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

Specialties & licences

Maternal & Fetal Medicine Physician (primary) Taxonomy 207VM0101X · Licence ME42212 (FL)

Record details

NPI number1700860558
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 5, 2005
Last updated in NPPESJuly 13, 2026

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