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

William A Ollar, DO

Individual provider Interventional Pain Medicine Physician · NPI 1255318291

William A Ollar, DO is an Interventional Pain Medicine Physician in Somersworth, New Hampshire. Licensed in New Hampshire. Registered with an NPI since 2005.

Licensed in
NH
In the registry since
2005
Specialties on file
2
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

7 Marsh Brook Dr Ste 10
Somersworth, NH 03878-6523
Phone: (603) 749-7246
Fax: (603) 749-2453
Show map & directions

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

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 8468 (NH)
Interventional Pain Medicine Physician Taxonomy 208VP0014X · Licence 8468 (NH)

Record details

NPI number1255318291
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedDecember 30, 2005
Last updated in NPPESMarch 12, 2015