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WILLIAM FERRIL MD
NPI 1285737635
General Practice in Whitefish, MT

Active since September 07, 2006Opted out of Medicare · through Feb 7, 2028
550 A CENTRAL AVE, WHITEFISH, MT 59937(406) 862-3308 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About William Ferril Md NPPES

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

WILLIAM FERRIL MD (NPI 1285737635) is an individual general practice provider in Whitefish, Montana, licensed in Montana (5332) and active in the NPI registry since September 2006. He has opted out of Medicare through February 7, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1285737635
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameWILLIAM FERRILCredential: MD
Location Address550 A CENTRAL AVEWhitefish, MT 59937
Mailing AddressPo Box 324Whitefish, MT 59937-2773
Phone(406) 862-3308
Sole ProprietorYes
Enumeration DateSeptember 7, 2006
Last NPPES UpdateJuly 9, 2007
✔ NPI 1285737635 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in MT · 5332
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
550 A CENTRAL AVE, Whitefish, MT 59937
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

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Opted out of Medicare

William Ferril Md has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from February 7, 2016 through February 7, 2028.

Opt-Out Effective DateFebruary 7, 2016
Opt-Out In Effect ThroughFebruary 7, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

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 Ferril's NPI number?

The NPI number for William Ferril is 1285737635. It was assigned to this individual provider in the NPPES registry on September 7, 2006.

Where is William Ferril located?

William Ferril practices at 550 A Central Ave, Whitefish, MT 59937. The listed phone number is (406) 862-3308.

What is William Ferril's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is William Ferril enrolled in Medicare?

No. William Ferril has opted out of Medicare through February 7, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for William Ferril was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.