Oa Asc LLC
NPI 1811718521 · Ambulatory Surgical Clinic/Center · Portland, ME
Enrolled with Medicare as Part B Supplier - Ambulatory Surgical Center · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oa Asc LLC is a Ambulatory Surgical Clinic/Center organization in Portland, ME (NPI 1811718521).
Provider details
- NPI number
- 1811718521
- Entity type
- Organization
- Primary specialty
- Ambulatory Surgical Clinic/CenterAmbulatory Health Care Facilities
- Parent organization
- Growth Orthopedics Services Mso
- Organization subpart
- Yes
- Authorized official
- Kathryn Hanna, Vice President(207) 828-2101
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-10-24
- Last updated
- 2025-02-13
- Certified
- 2025-02-13
Frequently asked questions
- What is Oa Asc LLC's NPI number?
- Oa Asc LLC's National Provider Identifier (NPI) is 1811718521, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Oa Asc LLC?
- Oa Asc LLC is classified in the NPPES registry as Ambulatory Surgical Clinic/Center (Ambulatory Health Care Facilities).
- Where is Oa Asc LLC located?
- Oa Asc LLC's practice location on file with NPPES is 33 Sewall St, Portland, ME 04102-2603.
- What is Oa Asc LLC's phone number?
- The practice phone number listed in the NPPES registry for Oa Asc LLC is (207) 828-2101.
- Does Oa Asc LLC accept Medicare?
- Oa Asc LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Oa Asc LLC?
- The authorized official listed on Oa Asc LLC's NPPES record is Kathryn Hanna, Vice President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Oa Asc LLC's NPI active?
- Yes — Oa Asc LLC's NPI (1811718521) is active in the NPPES registry as of the last update on 2025-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.