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WILLIAM TIMOTHY NORTHQUIST
NPI 1104405349
Internal Medicine in Plainfield, IN

Active since April 05, 2021PECOS EnrolledAccepts Medicare Assignment
1100 SOUTHFIELD DR STE 1220, PLAINFIELD, IN 46168(317) 838-3443(317) 838-3444 Get Directions Write a Review

NPPES record last updated: August 19, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 2, 2025, Apr 5, 2021 (2 updates tracked since 2021).

About William Timothy Northquist NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM TIMOTHY NORTHQUIST (NPI 1104405349) is an individual internal medicine provider in Plainfield, Indiana, licensed in Indiana (01096875A) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, is affiliated with Hendricks Regional Health, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1104405349
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWILLIAM TIMOTHY NORTHQUIST
Location Address1100 SOUTHFIELD DR STE 1220Plainfield, IN 46168-4499
Mailing Address1100 Southfield Dr Ste 1370Plainfield, IN 46168-4300 · (317) 837-5566
Phone(317) 838-3443
Fax(317) 838-3444
Sole ProprietorYes
Medical School CMSIndiana University School Of MedicineGraduated 2021
Enumeration DateApril 5, 2021
Last NPPES UpdateAugust 19, 20252 updates tracked since enumeration
NPPES CertifiedAugust 19, 2025
✔ NPI 1104405349 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IN · 01096875A
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedPediatricsTaxonomy 208000000X · License 01096875A (IN)
1100 SOUTHFIELD DR STE 1220, Plainfield, IN 46168
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1705 Riley Hospital Dr Rm 5837Indianapolis, IN 46202-5109 · Phone (317) 948-0003
Location 21411 S Green StBrownsburg, IN 46112-2049 · Phone (317) 852-3600 · Fax (317) 858-4600

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Timothy Northquist is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8123428273
PECOS Enrollment IDI20250620002961
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Hendricks Regional Health

Acute Care Hospitals · Danville, IN
5/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number150005
Location1000 E Main StDanville, IN 46122 · Hendricks County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46168 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$122.49 typical visit price
range $53.07 – $161.76
Typical copayment $30.62 (range $13.26 – $40.44)
Most-billed visit code 99204
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. TYLER MICHAEL FROMM MD
Internal Medicine
1100 SOUTHFIELD DR STE 1220
PLAINFIELD, IN 46168
Hendricks County (317) 838-3443
LAUREN SCHULTZ
Internal Medicine
1100 SOUTHFIELD DR STE 1220
PLAINFIELD, IN 46168
Hendricks County (317) 838-3443
LARA KATHRYN WEEKS M.D.
Pediatrics
1100 SOUTHFIELD DR STE 1220
PLAINFIELD, IN 46168
Hendricks County (317) 838-3443
KATLIN RENE PURLEE PA-C
Physician Assistant
1100 SOUTHFIELD DR STE 1220
PLAINFIELD, IN 46168
Hendricks County (317) 838-3443
JENNA DELONG
Nurse Practitioner (Family)
1100 SOUTHFIELD DR STE 1220
PLAINFIELD, IN 46168
Hendricks County (317) 838-3443
NADIA F SAVABI NP
Nurse Practitioner (Family)
1100 SOUTHFIELD DR STE 1220
PLAINFIELD, IN 46168
Hendricks County (317) 838-3443
MRS. DANIELLE CAITLIN JACKSON
Physician Assistant
1100 SOUTHFIELD DR STE 1220
PLAINFIELD, IN 46168
Hendricks County (317) 838-3443
LISA H FAUST NP
Nurse Practitioner
1100 SOUTHFIELD DR STE 1220
PLAINFIELD, IN 46168
Hendricks County (317) 838-3443

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Northquist's NPI number?

The NPI number for William Northquist is 1104405349. It was assigned to this individual provider in the NPPES registry on April 5, 2021.

Where is William Northquist located?

William Northquist practices at 1100 Southfield Dr Ste 1220, Plainfield, IN 46168. The listed phone number is (317) 838-3443.

What is William Northquist's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is William Northquist enrolled in Medicare?

Yes. William Northquist is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does William Northquist accept?

Health plans from CareSource list William Northquist as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Northquist affiliated with any hospitals?

According to CMS data, William Northquist is affiliated with Hendricks Regional Health.

When was this NPI record last updated?

The NPPES record for William Northquist was last updated on August 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.