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MS. ELIZABETH DALLAS KNOWLTON LPC, MA
NPI 1922332949
Counselor - Professional in Malvern, PA

Active since September 23, 2009PECOS Enrolled
1200 ATWATER DR STE 130, MALVERN, PA 19355(610) 646-1851 Get Directions Write a Review

NPPES record last updated: October 15, 2024. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Ms. Elizabeth Dallas Knowlton Lpc, Ma NPPES

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

MS. ELIZABETH DALLAS KNOWLTON LPC, MA (NPI 1922332949) is an individual professional provider in Malvern, Pennsylvania, licensed in Pennsylvania (PC017515) and active in the NPI registry since September 2009. She is enrolled in Medicare PECOS, maintains a secondary practice location in Phoenixville, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1922332949
Entity TypeIndividualFemale
Primary Taxonomy101YP2500X
Provider Legal NameMS. ELIZABETH DALLAS KNOWLTONCredential: LPC, MA
Location Address1200 ATWATER DR STE 130Malvern, PA 19355-9912
Mailing Address1041 W Bridge StPhoenixville, PA 19460-4342 · (610) 933-8110 · Fax (610) 933-7451
Phone(610) 646-1851
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateSeptember 23, 2009
Last NPPES UpdateOctober 15, 2024
NPPES CertifiedOctober 15, 2024
✔ NPI 1922332949 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License✔ Licensed in PA · PC017515
1200 ATWATER DR STE 130, Malvern, PA 19355
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Secondary Practice Location 1

Location 11041 W Bridge StPhoenixville, PA 19460-4342 · Phone (610) 933-8110 ext. 2251 · Fax (610) 933-7451

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Elizabeth Dallas Knowlton Lpc, Ma is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9739679986
PECOS Enrollment IDI20251106000369
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 Elizabeth Knowlton reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Ellie Main Line LLC
Same address
Mental Health (Including Community Mental Health Center)
1200 ATWATER DR STE 130
Malvern, PA 19355
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 8 clinicians in this Medicare group
NPI 1528752037 (610) 646-1851

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 14

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

BRYN ELYSE SPARKLER LSW
Counselor
1200 ATWATER DR STE 130
MALVERN, PA 19355
Chester County (610) 646-1851
ROSE D MONTGOMERY MSW, LCSW
Social Worker (Clinical)
1200 ATWATER DR STE 130
MALVERN, PA 19355
Chester County (610) 646-1851
EMILY JOY STONE MS, LPC
Counselor (Professional)
1200 ATWATER DR STE 130
MALVERN, PA 19355
Chester County (610) 646-1851
DANA GREENLEE MS, LPC
Counselor (Professional)
1200 ATWATER DR STE 130
MALVERN, PA 19355
Chester County (610) 646-1851
ANNA PIERCE FREDERICK MSSW, LCSW
Social Worker (Clinical)
1200 ATWATER DR STE 130
MALVERN, PA 19355
Chester County (610) 646-1851
JENNY MATLACK MA, LPC, NCC
Counselor (Professional)
1200 ATWATER DR STE 130
MALVERN, PA 19355
Chester County (610) 646-1851
JACQUELINE GAZZARA MSW,LCSW
Social Worker (Clinical)
1200 ATWATER DR STE 130
MALVERN, PA 19355
Chester County (610) 646-1851
MR. GARY DAVID ENGLISH MS, LPC
Counselor (Professional)
1200 ATWATER DR STE 130
MALVERN, PA 19355
Chester County (610) 632-7745

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 Knowlton's NPI number?

The NPI number for Elizabeth Knowlton is 1922332949. It was assigned to this individual provider in the NPPES registry on September 23, 2009.

Where is Elizabeth Knowlton located?

Elizabeth Knowlton practices at 1200 Atwater Dr Ste 130, Malvern, PA 19355. The listed phone number is (610) 646-1851.

What is Elizabeth Knowlton's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

Is Elizabeth Knowlton enrolled in Medicare?

Yes. Elizabeth Knowlton is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Elizabeth Knowlton's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Knowlton reassigns Medicare benefits to Ellie Main Line LLC (Malvern, PA). 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 Elizabeth Knowlton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Elizabeth Knowlton was last updated on October 15, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.