MARY KATHERINE DRENZEK MS CCC-SLP
NPI 1649795972
Speech-Language Pathologist in West Suffield, CT
About Mary Katherine Drenzek Ms Ccc-slp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY KATHERINE DRENZEK MS CCC-SLP (NPI 1649795972) is an individual speech-language pathologist provider in West Suffield, Connecticut, licensed in Illinois (146013682) and active in the NPI registry since August 2017. She is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses
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
Mary Katherine Drenzek Ms Ccc-slp 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 Mary Drenzek reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Suffield, CT 06093
- Reassigned Medicare billing, Connecticut enrollment
Austin, TX 78752
- Reassigned Medicare billing, Connecticut and Massachusetts enrollments
- 16 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.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mary Drenzek's NPI number?
The NPI number for Mary Drenzek is 1649795972. It was assigned to this individual provider in the NPPES registry on August 8, 2017.
Where is Mary Drenzek located?
Mary Drenzek practices at 1486 Mountain Rd, West Suffield, CT 06093. The listed phone number is (860) 292-0376.
What is Mary Drenzek's specialty?
The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.
Is Mary Drenzek enrolled in Medicare?
Yes. Mary Drenzek 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 Mary Drenzek's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Drenzek reassigns Medicare benefits to 2 organizations: Suffield Speech Therapy LLC (West Suffield, CT) and Expressable Therapy PC (Austin, TX). 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 Mary Drenzek's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Drenzek accept?
Health plans from Anthem Blue Cross and Blue Shield list Mary Drenzek 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 Mary Drenzek was last updated on June 18, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mary Katherine Drenzek, MS CCC-SLP · NPI 1649795972
Speech-Language Pathologist provider in West Suffield, Connecticut. Individual provider, active in the CMS NPPES registry since August 8, 2017.
## Identity
- **NPI:** 1649795972 (Entity type: Individual)
- **Enumerated:** August 8, 2017
- **Primary specialty:** Speech-Language Pathologist · taxonomy 235Z00000X
- **State license:** 146013682 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1486 MOUNTAIN RD, West Suffield, CT 06093-3306
- **Phone:** (860) 292-0376
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Suffield Speech Therapy LLC (NPI 1821762444, West Suffield, CT); Expressable Therapy PC (NPI 1134875370, Austin, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** June 18, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1649795972) · Data from the CMS NPPES public registry.