NPIMap

Organization Active NPI

Arizona Surgical Specialists Center, LLC

Doing business as Arizona Surgical Specialists Center West Phoenix

  • Ambulatory Surgical Clinic/Center
  • Phoenix, AZ
National Provider Identifier
1821471913
Registry record updated May 20, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Ambulatory Surgical Clinic/CenterTaxonomy code 261QA1903X
Legal business name
ARIZONA SURGICAL SPECIALISTS CENTER, LLC
Doing business as
Arizona Surgical Specialists Center West Phoenix
Arizona Surgical Specialsts Center West Phoenix
Practice address
9250 W Thomas Rd
Suite 220
Phoenix, AZ 85037-3382
Phone
(623) 516-8252
Fax
(623) 516-8253
NPI assigned
Jul 7, 2015
Organization subpart
Yes
Parent organization
ARIZONA SURGICAL SPECIALISTS CENTER, LLCAs reported in NPPES

NPPES NPI Registry

Updated by the provider on May 20, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Steven Siwek, MD
Title
President
Phone
(623) 516-8252

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Ambulatory Surgical Clinic/Center 261QA1903X Primary

Addresses

Primary practice location

9250 W Thomas Rd
Suite 220
Phoenix, AZ 85037-3382

Mailing address

9401 W Thunderbird Rd Ste 180
Peoria, AZ 85381-4210
Phone (623) 516-8252

Other names 2

  • Arizona Surgical Specialists Center West Phoenix Doing business as
  • Arizona Surgical Specialsts Center West Phoenix Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in AZ

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20151020002931 AZ Part B Supplier - Ambulatory Surgical Center 1254379399 Practice locations: Phoenix, AZ

Other NPIs with the same Medicare PAC ID 3

NPIs whose Medicare enrollments share a PECOS associate control ID (the same enrolled entity).

Care Compare: Ambulatory surgical center

Medicare Care Compare
Listed as
Arizona Surgical Specialists Center LLC Dba Arizona Surgical Specialsts Center West PhoenixCCN 03C0001367
Medicare certification status
ActiveFrom the Provider of Services file

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
03D2096711Arizona Surgical Specialists Center9250 W Thomas Rd Ste 220, Phoenix, AZ 85037Certificate of waiverMay 28, 2027

National Provider Directory

National Provider Directory
Tax ID family
Arizona Surgical Specialists Center LLC4 organizations share this tax ID, including this one
Part of
Arizona Surgical Specialists Center LLC

Other organizations with this tax ID 3

Organizations that report the same tax identification number in the National Provider Directory.

Member of 1

Organizations this organization is a member of, according to the National Provider Directory.

Ownership & related parties

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1436227200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1779235200000",
    "number": "1821471913",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9401 W THUNDERBIRD RD STE 180",
            "city": "PEORIA",
            "state": "AZ",
            "postal_code": "853814210",
            "telephone_number": "623-516-8252",
            "fax_number": "623-516-8253"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9250 W THOMAS RD",
            "address_2": "SUITE 220",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850373382",
            "telephone_number": "623-516-8252",
            "fax_number": "623-516-8253"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ARIZONA SURGICAL SPECIALISTS CENTER, LLC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "ARIZONA SURGICAL SPECIALISTS CENTER, LLC",
        "enumeration_date": "2015-07-07",
        "last_updated": "2026-05-20",
        "certification_date": "2026-05-20",
        "status": "A",
        "authorized_official_last_name": "SIWEK",
        "authorized_official_first_name": "STEVEN",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "623-516-8252",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "261QA1903X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Ambulatory Surgical",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Arizona Surgical Specialists Center West Phoenix",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Arizona Surgical Specialsts Center West Phoenix",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Phoenix, AZ

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 20, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.