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DR. WILLIAM NAGLER
NPI 1275790453
Psychiatry & Neurology - Obesity Medicine in Livonia, MI

Active since May 16, 2008Opted out of Medicare · through Feb 24, 2028
16311 MIDDLEBELT RD, LIVONIA, MI 48154(734) 422-8040 Get Directions Write a Review

NPPES record last updated: May 16, 2008. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William Nagler NPPES

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

DR. WILLIAM NAGLER (NPI 1275790453) is an individual obesity medicine provider in Livonia, Michigan, licensed in Michigan (044055) and active in the NPI registry since May 2008. He has opted out of Medicare through February 24, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1275790453
Entity TypeIndividualMale
Primary Taxonomy2084B0002X
Provider Legal NameDR. WILLIAM NAGLER
Location Address16311 MIDDLEBELT RDLivonia, MI 48154-3360
Mailing Address16311 Middlebelt RdLivonia, MI 48154-3360
Phone(734) 422-8040
Sole ProprietorYes
Enumeration DateMay 16, 2008
✔ NPI 1275790453 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Obesity MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2084B0002X
License✔ Licensed in MI · 044055
Definition
A physician who specializes in the treatment of obesity demonstrates competency in and a thorough understanding of the treatment of obesity and the genetic, biologic, environmental, social, and behavioral factors that contribute to obesity. The obesity medicine physician employs therapeutic interventions including diet, physical activity, behavioral change, and pharmacotherapy. The obesity medicine physician utilizes a comprehensive approach, and may include additional resources such as dietitians, exercise physiologists, mental health professionals and bariatric surgeons as indicated to achieve optimal results. Additionally, the obesity medicine physician maintains competency in providing pre- peri- and post-surgical care of bariatric surgery patients, promotes the prevention of obesity, and advocates for those who suffer from obesity.
16311 MIDDLEBELT RD, Livonia, MI 48154
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Other Identifiers 1

Medicare UPINB74178CA

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

Dr. William Nagler 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 24, 2026 through February 24, 2028.

Opt-Out Effective DateFebruary 24, 2026
Opt-Out In Effect ThroughFebruary 24, 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 Nagler's NPI number?

The NPI number for William Nagler is 1275790453. It was assigned to this individual provider in the NPPES registry on May 16, 2008.

Where is William Nagler located?

William Nagler practices at 16311 Middlebelt Rd, Livonia, MI 48154. The listed phone number is (734) 422-8040.

What is William Nagler's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Obesity Medicine, with taxonomy code 2084B0002X.

Is William Nagler enrolled in Medicare?

No. William Nagler has opted out of Medicare through February 24, 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 Nagler was last updated on May 16, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.