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THERESA ANN WILLS FNP-BC
NPI 1962215533
Internal Medicine in Ferndale, MI

Active since January 28, 2025PECOS Enrolled
PO BOX 20066, FERNDALE, MI 48220(818) 885-4574 Get Directions Write a Review

NPPES record last updated: January 28, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Theresa Ann Wills Fnp-bc NPPES

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

THERESA ANN WILLS FNP-BC (NPI 1962215533) is an individual internal medicine provider in Ferndale, Michigan, licensed in Michigan (4704192647) and active in the NPI registry since January 2025. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1962215533
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameTHERESA ANN WILLSCredential: FNP-BC
Location AddressPO BOX 20066Ferndale, MI 48220-0066
Mailing AddressPo Box 20066Ferndale, MI 48220-0066 · (818) 885-4574
Phone(818) 885-4574
Sole ProprietorNo
Enumeration DateJanuary 28, 2025
NPPES CertifiedJanuary 28, 2025
✔ NPI 1962215533 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 4704192647
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.
PO BOX 20066, Ferndale, MI 48220
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Theresa Ann Wills Fnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Theresa Wills reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Ih Physician Services PC
96 mi
Hospice and Palliative Medicine
1320 WALDO AVE STE 300
Midland, MI 48642
  • Reassigned Medicare billing, Michigan enrollment
  • 25 clinicians in this Medicare group
NPI 1437960101 (989) 667-3440

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48220 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
$134.28 typical visit price
range $58.04 – $177.36
Typical copayment $33.57 (range $14.51 – $44.34)
Most-billed visit code 99204
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
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.

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 Theresa Wills's NPI number?

The NPI number for Theresa Wills is 1962215533. It was assigned to this individual provider in the NPPES registry on January 28, 2025.

Where is Theresa Wills located?

Theresa Wills practices at PO Box 20066, Ferndale, MI 48220. The listed phone number is (818) 885-4574.

What is Theresa Wills's specialty?

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

Is Theresa Wills enrolled in Medicare?

Yes. Theresa Wills is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Theresa Wills's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Theresa Wills reassigns Medicare benefits to Ih Physician Services PC (Midland, MI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Theresa Wills's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Theresa Wills was last updated on January 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.