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DR. WALTER D MERRITT III M.D.
NPI 1053394643
Otolaryngology - Otolaryngic Allergy in Lander, WY

Active since November 28, 2005PECOS Enrolled
8185 STATE HIGHWAY 789, LANDER, WY 82520(307) 335-7555(307) 335-7999 Get Directions Write a Review

NPPES record last updated: September 11, 2009. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Walter D Merritt Iii M.d. NPPES

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

DR. WALTER D MERRITT III M.D. (NPI 1053394643) is an individual otolaryngic allergy provider in Lander, Wyoming, licensed in Idaho (M5753) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1053394643
Entity TypeIndividualMale
Primary Taxonomy207YX0602X
Provider Legal NameDR. WALTER D MERRITT IIICredential: M.D.
Location Address8185 STATE HIGHWAY 789Lander, WY 82520-2942
Mailing Address8185 State Highway 789Lander, WY 82520-2942 · (307) 335-7555 · Fax (307) 335-7999
Phone(307) 335-7555
Fax(307) 335-7999
Sole ProprietorYes
Enumeration DateNovember 28, 2005
Last NPPES UpdateSeptember 11, 2009
✔ NPI 1053394643 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngology · Otolaryngic AllergyAllopathic & Osteopathic Physicians
Taxonomy Code207YX0602X
License✔ Licensed in ID · M5753
Definition
An otolaryngologist who specializes in the diagnosis and treatment of otolaryngic allergies and other allergic diseases.
8185 STATE HIGHWAY 789, Lander, WY 82520
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Other Identifiers 3

Medicare UPINE62980ID
Medicare ID-Type Unspecified1124117ID
Medicaid804259200ID

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Walter D Merritt Iii M.d. 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 Walter Merritt reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Northern Itasca Hospital District
807 mi
Critical Access
258 PINE TREE DRIVE
Bigfork, MN 56628
  • Reassigned Medicare billing, Minnesota enrollment
  • 14 clinicians in this Medicare group
NPI 1851335525 (218) 743-3177

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

Other Providers at the Same Location NPPES

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

HOLLIE JOHNSON FNP-C
Nurse Practitioner (Family)
8185 STATE HIGHWAY 789
LANDER, WY 82520
Fremont County (307) 206-9300

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 Walter Merritt's NPI number?

The NPI number for Walter Merritt is 1053394643. It was assigned to this individual provider in the NPPES registry on November 28, 2005.

Where is Walter Merritt located?

Walter Merritt practices at 8185 State Highway 789, Lander, WY 82520. The listed phone number is (307) 335-7555.

What is Walter Merritt's specialty?

The primary specialty registered for this NPI is Otolaryngology, specializing in Otolaryngic Allergy, with taxonomy code 207YX0602X.

Is Walter Merritt enrolled in Medicare?

Yes. Walter Merritt is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Walter Merritt's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Walter Merritt reassigns Medicare benefits to Northern Itasca Hospital District (Bigfork, MN). 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 Walter Merritt's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Walter Merritt accept?

Health plans from Sanford Health Plan list Walter Merritt 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.

When was this NPI record last updated?

The NPPES record for Walter Merritt was last updated on September 11, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.