William Timothy Northquist

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

01096875A Issued in IN

Practice address

1100 Southfield Dr Ste 1220
Plainfield, IN 46168-4499

Phone

(317) 838-3443

Fax

(317) 838-3444

NPI assigned

Apr 5, 2021

Last updated

Aug 19, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in IN

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Internal Medicine

Education

Indiana University School of Medicine, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Hendricks County HospitalGroup PAC ID 4880505528, 341 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Suburban Home Health LLC Home health agency, Noblesville, IN, CCN 157092
• Hendricks Regional Health Hospital, Danville, IN, CCN 150005

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://sehproxy.stelizabeth.com/arr-fhir/api/FHIR/R4
• Direct secure messaging: wnorthquist446270@direct-prd.stelizabeth.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Hendricks County Hospital

  dba HRH Associate Health

  • General Practice Physician
  • Danville, IN
  • NPI 1497536163
  Medicare reassignment Care Compare group NPD
• Hendricks County Hospital

  dba Indiana Adult & Pediatric Medicine

  • Internal Medicine Physician
  • Plainfield, IN
  • NPI 1396841219
  NPD
• Hendricks County Hospital

  dba Hendricks Pediatrics of Brownsburg

  • Pediatrics Physician
  • Brownsburg, IN
  • NPI 1508758210
  NPD
• Healthnet, Inc.

  • Federally Qualified Health Center (FQHC)
  • Indianapolis, IN
  • NPI 1780634964
  NPD (past)
• Hendricks County Hospital

  dba Hendricks Regional Health Immediate Care

  • Urgent Care Clinic/Center
  • Avon, IN
  • NPI 1063411551
  NPD (past)
• Hendricks County Hospital

  dba Stafford Pointe Family Physicians

  • Family Medicine Physician
  • Plainfield, IN
  • NPI 1104927557
  NPD (past)
• Hendricks County Hospital

  dba Avon Family Health

  • Family Medicine Physician
  • Avon, IN
  • NPI 1598993784
  NPD (past)
• Major Hospital

  • General Acute Care Hospital
  • Shelbyville, IN
  • NPI 1174555692
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Hendricks County Hospital

  • General Acute Care Hospital
  • Danville, IN
  • NPI 1669475950
  Care Compare affiliation
• Suburban Home Health, LLC

  • Home Health Agency
  • Noblesville, IN
  • NPI 1598872939
  Care Compare affiliation

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

{
    "created_epoch": "1617580800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755561600000",
    "number": "1104405349",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1100 SOUTHFIELD DR STE 1370",
            "city": "PLAINFIELD",
            "state": "IN",
            "postal_code": "461684300",
            "telephone_number": "317-837-5566"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1100 SOUTHFIELD DR STE 1220",
            "city": "PLAINFIELD",
            "state": "IN",
            "postal_code": "461684499",
            "telephone_number": "317-838-3443",
            "fax_number": "317-838-3444"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "705 Riley Hospital Dr Rm 5837",
            "address_purpose": "LOCATION",
            "city": "Indianapolis",
            "state": "IN",
            "postal_code": "462025109",
            "country_code": "US",
            "telephone_number": "317-948-0003",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1411 S Green St",
            "address_purpose": "LOCATION",
            "city": "Brownsburg",
            "state": "IN",
            "postal_code": "461122049",
            "country_code": "US",
            "telephone_number": "317-852-3600",
            "fax_number": "317-858-4600",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NORTHQUIST",
        "first_name": "WILLIAM",
        "middle_name": "TIMOTHY",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2021-04-05",
        "last_updated": "2025-08-19",
        "certification_date": "2025-08-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IN",
            "license": "01096875A",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "IN",
            "license": "01096875A",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "wnorthquist446270@direct-PRD.stelizabeth.com",
            "affiliation": "N",
            "address_1": "1100 Southfield Dr Ste 1220",
            "city": "Plainfield",
            "state": "IN",
            "country_code": "US",
            "postal_code": "461684499",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "wnorthquist446270@direct-PRD.stelizabeth.com",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1411 S Green St",
            "city": "Brownsburg",
            "state": "IN",
            "country_code": "US",
            "postal_code": "461122049",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Aurora Nicholson
• Linsey Niehaus, RBT
• Jeremy Keith Nivens, NP
• Emily Ann Nograles
• Noorlife Homecare LLC
• Chad Nowlin, PT, DPT
• Tessa Nowling, RBT
• NRG Physiotherapy Inc
• Assurance Nshom
• Nydia L. Nunez-Estrada, M.D.

• Internal Medicine Physician in Plainfield, IN
• Providers in Plainfield, IN by specialty
• Internal Medicine Physician in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 19, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.