OrganizationActive
Assoc Holdings LLC
NPI 1235666314 · Family Medicine Physician · Pawnee, OK
Assoc Holdings LLC is a Family Medicine Physician organization in Pawnee, OK (NPI 1235666314).
Provider details
- NPI number
- 1235666314
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Niko Koliastasis, Ceo(918) 636-3930
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(70/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs 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
557 Harrison St
Pawnee, OK 74058-2566
Phone: (918) 762-5050
Fax: (918) 762-5055
Street-level locationGet directions
Mailing address
557 Harrison St
Pawnee, OK 74058-2566
Other names (DBA / former)
- Doing business as
- Phoenix Medical Center
- Doing business as
- Phoenix Medical Center
Registry dates
- Enumerated
- 2017-05-19
- Last updated
- 2022-07-21
Frequently asked questions
- What is Assoc Holdings LLC's NPI number?
- Assoc Holdings LLC's National Provider Identifier (NPI) is 1235666314, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Assoc Holdings LLC?
- Assoc Holdings LLC is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Assoc Holdings LLC located?
- Assoc Holdings LLC's practice location on file with NPPES is 557 Harrison St, Pawnee, OK 74058-2566.
- What is Assoc Holdings LLC's phone number?
- The practice phone number listed in the NPPES registry for Assoc Holdings LLC is (918) 762-5050.
- Who is the authorized official for Assoc Holdings LLC?
- The authorized official listed on Assoc Holdings LLC's NPPES record is Niko Koliastasis, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Assoc Holdings LLC's NPI active?
- Yes — Assoc Holdings LLC's NPI (1235666314) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.