DR. ELIZABETH WHITLEY LASSEN PSYD
NPI 1457684938
Psychologist - Clinical in Louisville, CO
About Dr. Elizabeth Whitley Lassen Psyd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ELIZABETH WHITLEY LASSEN PSYD (NPI 1457684938) is an individual clinical provider in Louisville, Colorado, licensed in Colorado (PSY.4381) and active in the NPI registry since September 2009. She is enrolled in Medicare PECOS, maintains a secondary practice location in Boulder, and is a graduate of Other (2011).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Dr. Elizabeth Whitley Lassen Psyd 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 Reassignments
2Medicare enrollment records show Elizabeth Lassen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Louisville, CO 80027
- Reassigned Medicare billing, Colorado enrollment
- 733 clinicians in this Medicare group
Jupiter, FL 33477
- Reassigned Medicare billing, Colorado enrollment
- 4 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80027 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 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOUISVILLE, CO 80027
LOUISVILLE, CO 80027
LOUISVILLE, CO 80027
LOUISVILLE, CO 80027
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 Elizabeth Lassen's NPI number?
The NPI number for Elizabeth Lassen is 1457684938. It was assigned to this individual provider in the NPPES registry on September 15, 2009.
Where is Elizabeth Lassen located?
Elizabeth Lassen practices at 80 Health Park Dr Ste 270, Louisville, CO 80027. The listed phone number is (303) 661-4100.
What is Elizabeth Lassen's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Elizabeth Lassen enrolled in Medicare?
Yes. Elizabeth Lassen 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 organizations bill Medicare for Elizabeth Lassen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Lassen reassigns Medicare benefits to 2 organizations: Portercare Adventist Health System (Louisville, CO) and Total Life Inc. (Jupiter, FL). Each 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 Elizabeth Lassen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Elizabeth Lassen accept?
Health plans from Select Health list Elizabeth Lassen 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 Elizabeth Lassen was last updated on February 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.
# Dr. Elizabeth Whitley Lassen, PSYD · NPI 1457684938
Clinical provider in Louisville, Colorado. Individual provider, active in the CMS NPPES registry since September 15, 2009.
## Identity
- **NPI:** 1457684938 (Entity type: Individual)
- **Enumerated:** September 15, 2009
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **State license:** PSY.4381 (Colorado)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 80 HEALTH PARK DR STE 270, Louisville, CO 80027-4644
- **Phone:** (303) 661-4100 · **Fax:** (720) 321-8969
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Portercare Adventist Health System (NPI 1801531652, Louisville, CO); Total Life Inc. (NPI 1053909267, Jupiter, FL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** February 21, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1457684938) · Data from the CMS NPPES public registry.