Ambulatory surgery center (ASC) lists


The ASC list package includes two similar, but different files.  The Medicare ASC list and the NPI ASC list each contain unique data.  For example, the Medicare ASC list includes operating room counts and surgical specialties served at each facility.  The NPI list identifies an actual individual contact person at each self-identified surgical facility.

Ambulatory Surgery Center (ASC) List Demo


ASC List Package (Updated 5/18/18)

Medicare ASC List NPI ASC List

December 31, 2017 update: The Medicare ASC list includes 8,064 ASCs, of which 5,602 records are for active ASCs, and 2,462 records are for ASCs that have terminated participation in the Medicare. The following data fields are included, among others:

  • Medicare provider number
  • Operating room count
  • Facility name, address, city, state, and zip code
  • Phone number
  • ASC open date, original Medicare participation date
  • Medicare program termination date (if applicable)
  • Accreditation type
  • Number of changes of ownership (CHOWs), date of last CHOW, date of previous CHOW
  • Surgical specialties: dental, ENT, endoscopy, OBGYN, ophthalmology, ortho, other surgery, pain, plastic, podiatry

May 2018 update: The NPI ASC list includes 12,223 self-identified ASCs, endocopy centers, ophthalmologic surgery centers, oral and maxillofacial surgery centers, and lithotripsy providers. The NPI list includes providers certified and not certified by Medicare. The following data fields are included, among others:

  • NPI number
  • Provider organization legal business name
  • Physical address and mailing address
  • Authorized official name, credentials, title, phone number
  • Is organization subpart of a parent organization?
  • Self-reported parent organization legal business name

Note #1:

There are NO emails on either list.

Note #2:

There is no common NPI or provider number field to link these two tables together.  Phone number is the best field for matching purposes.