MARC E WALKER LCSW
NPI 1720207475
Social Worker - Clinical in Westminster, CO
About Marc E Walker Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARC E WALKER LCSW (NPI 1720207475) is an individual clinical provider in Westminster, Colorado, licensed in Colorado (CSW-992571) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Marc E Walker Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Marc Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Denver, CO 80202
- Reassigned Medicare billing, Colorado enrollment
- 940 clinicians in this Medicare group
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 80003 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WESTMINSTER, CO 80003
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 Marc Walker's NPI number?
The NPI number for Marc Walker is 1720207475. It was assigned to this individual provider in the NPPES registry on April 24, 2007.
Where is Marc Walker located?
Marc Walker practices at 7701 Sheridan Blvd, Westminster, CO 80003. The listed phone number is (303) 338-4545.
What is Marc Walker's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Marc Walker enrolled in Medicare?
Yes. Marc Walker is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Marc Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marc Walker reassigns Medicare benefits to Sondermind Provider Network LLC (Denver, CO). 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 Marc Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marc Walker accept?
Health plans from Oscar Insurance Company list Marc Walker 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 Marc Walker was last updated on June 26, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Marc E Walker, LCSW · NPI 1720207475
Clinical provider in Westminster, Colorado. Individual provider, active in the CMS NPPES registry since April 24, 2007.
## Identity
- **NPI:** 1720207475 (Entity type: Individual)
- **Enumerated:** April 24, 2007
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** CSW-992571 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 7701 SHERIDAN BLVD, Westminster, CO 80003-2605
- **Phone:** (303) 338-4545
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Sondermind Provider Network LLC (NPI 1760854442, Denver, CO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** June 26, 2012
- **Other identifiers:** Medicare PIN COA106833 (CO); Medicaid 31631576 (CO); Other 022752 (CO)
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Source: [NPI Profile](https://npiprofile.com/npi/1720207475) · Data from the CMS NPPES public registry.