Oak ASC, LLC

Primary specialty

Ambulatory Surgical Clinic/CenterTaxonomy code 261QA1903X

Legal business name

OAK ASC, LLC

Practice address

6712 N Convent St
Bourbonnais, IL 60914-1528

Phone

(815) 928-8050

NPI assigned

Jun 16, 2021

Last updated

Sep 22, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Jill Patterson, RN, BSN

Title

Administrator

Phone

(815) 348-9500

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in IL

Enrollment records 1

Listed as

Oak ASC LLCCCN 14C0001190

Medicare certification status

ActiveFrom the Provider of Services file

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

CLIA laboratory certificates

Member of 1

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

• Illinois Bone and Joint Institute LLC

  • Physical Therapist
  • Lincolnwood, IL
  • NPI 1730582891

  Member Of

  NPD member

Locations

Practitioners 10

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Tomasz Taduesz Antkowiak, MD

  • Orthopaedic Surgery Physician
  • Bradley, IL
  • NPI 1881851210
  NPD (past)
• Holly Brockman, M.D.

  • Orthopaedic Surgery Physician
  • Bourbonnais, IL
  • NPI 1497907463
  NPD (past)
• Wesley Eugene Choy, MD

  • Orthopaedic Surgery Physician
  • Bradley, IL
  • NPI 1659389450
  NPD (past)
• Michael John Corcoran, MD

  • Orthopaedic Surgery Physician
  • Bradley, IL
  • NPI 1578571386
  NPD (past)
• Timothy John Friedrich, D.P.M.

  • Foot & Ankle Surgery Podiatrist
  • Frankfort, IL
  • NPI 1649434036
  NPD (past)
• Alexander Eugene Michalow, MD

  • Orthopaedic Surgery Physician
  • Bradley, IL
  • NPI 1891703609
  NPD (past)
• William Mosenthal, M.D.

  • Orthopaedic Surgery Physician
  • Bourbonnais, IL
  • NPI 1023499480
  NPD (past)
• Kermit S Muhammad, MD

  • Orthopaedic Surgery Physician
  • Bradley, IL
  • NPI 1487662128
  NPD (past)
• Rajeev Damian Puri, MD

  • Orthopaedic Surgery Physician
  • Bradley, IL
  • NPI 1316955149
  NPD (past)
• Juan Santiago-Palma, MD

  • Pain Medicine (Physical Medicine & Rehabilitation) Physician
  • Bradley, IL
  • NPI 1295743953
  NPD (past)

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

{
    "created_epoch": "1623801600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1790035200000",
    "number": "1962070896",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6712 N CONVENT ST STE 200",
            "city": "BOURBONNAIS",
            "state": "IL",
            "postal_code": "609141528",
            "telephone_number": "815-348-9500",
            "fax_number": "815-348-9356"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6712 N CONVENT ST",
            "city": "BOURBONNAIS",
            "state": "IL",
            "postal_code": "609141528",
            "telephone_number": "815-928-8050"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "OAK ASC, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2021-06-16",
        "last_updated": "2026-09-22",
        "certification_date": "2026-09-22",
        "status": "A",
        "authorized_official_last_name": "PATTERSON",
        "authorized_official_first_name": "JILL",
        "authorized_official_title_or_position": "ADMINISTRATOR",
        "authorized_official_telephone_number": "815-348-9500",
        "authorized_official_credential": "RN, BSN"
    },
    "taxonomies": [
        {
            "code": "261QA1903X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Ambulatory Surgical",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kiran Nizamani, MD
• Molly Nordmeyer
• Janet Mary Notton
• Uzoma Nwakibu, MD
• Thomas O'Connor, M.D.
• Oak Forest Psychological Service, P.C.
• Oasis Transportation LLC (Oasis Medical Services)
• Derek Leo Oconnor, DDS
• Kelly L Oconnor, DDS
• Dexter Odeneal

• Ambulatory Surgical Clinic/Center in Bourbonnais, IL
• Providers in Bourbonnais, IL by specialty
• Ambulatory Surgical Clinic/Center in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 22, 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.