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MR. MARK DALTON ELLIS LMSW
NPI 1336401710
Social Worker - Clinical in Twin Falls, ID

Active since June 12, 2012PECOS Enrolled
1418 FILLMORE ST, TWIN FALLS, ID 83301(208) 735-2237 Get Directions Write a Review

NPPES record last updated: December 4, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mr. Mark Dalton Ellis Lmsw NPPES

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

MR. MARK DALTON ELLIS LMSW (NPI 1336401710) is an individual clinical provider in Twin Falls, Idaho, licensed in Idaho (LCSW-32484) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1336401710
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMR. MARK DALTON ELLISCredential: LMSW
Location Address1418 FILLMORE STTwin Falls, ID 83301-3380
Mailing Address1418 Fillmore StTwin Falls, ID 83301-3380 · (208) 735-2237
Phone(208) 735-2237
Sole ProprietorNo
Enumeration DateJune 12, 2012
Last NPPES UpdateDecember 4, 2013
✔ NPI 1336401710 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in ID · LCSW-32484
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
1418 FILLMORE ST, Twin Falls, ID 83301
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence 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)

Mr. Mark Dalton Ellis Lmsw 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 Mark Ellis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Crosspointe Mental Health, LLC
0.1 mi
Primary Care
1363 FILLMORE ST
Twin Falls, ID 83301
  • Reassigned Medicare billing, Idaho enrollment
  • 11 clinicians in this Medicare group
NPI 1386914505 (208) 736-7090

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 83301 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
$0.00 typical visit price
range $52.44 – $160.17
Typical copayment $0.00 (range $13.11 – $40.04)
Most-billed visit code NA
Established Patient
$65.77 typical visit price
range $16.68 – $130.93
Typical copayment $16.44 (range $4.17 – $32.73)
Most-billed visit code 99213
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 6

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

LDS FAMILY SERVICES
Clinic/Center (Mental Health (Including Community Mental Health Center))
1418 FILLMORE ST
TWIN FALLS, ID 83301
Twin Falls County (208) 735-2237
DAVID PAUL HOLLOWAY LMFT
Marriage & Family Therapist
1418 FILLMORE ST
TWIN FALLS, ID 83301
Twin Falls County (208) 735-2237
DANIEL ZEA
Student in an Organized Health Care Education/Training Program
1418 FILLMORE ST
TWIN FALLS, ID 83301
Twin Falls County (208) 735-2237
ALLISON STOKES
Counselor (Mental Health)
1418 FILLMORE ST
TWIN FALLS, ID 83301
Twin Falls County (208) 735-2237
DEANNE FORD LMSW
Social Worker
1418 FILLMORE ST
TWIN FALLS, ID 83301
Twin Falls County (208) 735-2237
MS. MARIA BUSHMAN
Student in an Organized Health Care Education/Training Program
1418 FILLMORE ST
TWIN FALLS, ID 83301
Twin Falls County (208) 735-2237

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 Mark Ellis's NPI number?

The NPI number for Mark Ellis is 1336401710. It was assigned to this individual provider in the NPPES registry on June 12, 2012.

Where is Mark Ellis located?

Mark Ellis practices at 1418 Fillmore St, Twin Falls, ID 83301. The listed phone number is (208) 735-2237.

What is Mark Ellis's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Mark Ellis enrolled in Medicare?

Yes. Mark Ellis is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mark Ellis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Ellis reassigns Medicare benefits to Crosspointe Mental Health, LLC (Twin Falls, ID). 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 Mark Ellis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Ellis accept?

Health plans from Providence Health Plan list Mark Ellis 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 Mark Ellis was last updated on December 4, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.