NPPES file of Aug 9, 2026

Andrea Mertens, M.S. CCC SLP

Speech-Language Pathologist · Ellisville, MO

Andrea Mertens, M.S. CCC SLP is a speech-language pathologist with a practice address in Ellisville, Missouri, and NPI 1457695462, issued on Nov 15, 2012. Check the license (Missouri 2013021681, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1457695462
Name
Andrea Mertens
Credential
M.S. CCC SLP
Primary taxonomy
Speech-Language Pathologist 235Z00000X
License number
2013021681 MO
Self-reported in NPPES; status is on the state search
Practice location
27 Reinke RD, Ellisville, MO 63021
Phone
(636) 527-5554
Enumerated
Nov 15, 2012
Record last updated
Nov 21, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20230922003088); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest speech-language pathologist records → All 5,054 in Missouri → Look up another NPI →

Also registered at 27 Reinke RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kimberly Herren, COTA/LOccupational Therapy Assistant1326622986
  2. Ashely MooreOccupational Therapy Assistant1740806025

Verify Andrea Mertens in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri board licenses this profession
    Search for license 2013021681    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Missouri license search

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Bills Medicare through one group practice

  1. Legacy Healthcare Services IncEllisville, MO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Andrea Mertens among 5,054 speech-language pathologist records in Missouri

Andrea Mertens, M.S. CCC SLP is one of 5,054 speech-language pathologist records with a practice address in Missouri. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 39% of them.

  • NPI issued2012 · 39% of these records are older, 57% newer
  • In a Medicare fileYes · 3% of these records are
  • In the CMS Doctors and Clinicians fileYes · 3% of these records are
  • Graduated2012 · median 2016 among the 170 with a school on file
  • Record last updated2021 · 72% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 235Z00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

17 speech-language pathologist records list a practice address in Ellisville

They are 17 of the 288 NPPES records with a practice address in Ellisville, and 5,054 speech-language pathologist records in Missouri.

All 5,054 in Missouri → Every provider in Ellisville → Speech-Language Pathologist nationwide →

The 8 speech-language pathologist records with the nearest ZIP codes

  1. Sharon Bisang, M.A.CCCBallwin, MO 630211922318831
  2. Laura Dougherty, MS CCC SLPBallwin, MO 630211750544177
  3. Christine Grelle, M.A.Ballwin, MO 630211972814101
  4. Linda Haislup, CCC-SLPBallwin, MO 630211013057074
  5. Margaret Jackson, M.S., CCCSLPBallwin, MO 630211205981156
  6. Lisa JeziorskiBallwin, MO 630211689958431
  7. Allyson Kranz, SLPBallwin, MO 630211902003437
  8. Jennifer Lane, M.S., CCC-SLPBallwin, MO 630211245465046

Common questions

What is Andrea Mertens, M.S. CCC SLP's NPI number?

Andrea Mertens, M.S. CCC SLP's National Provider Identifier (NPI) is 1457695462, issued on Nov 15, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Andrea Mertens, M.S. CCC SLP located?

The NPPES record lists a practice address at 27 Reinke RD, Ellisville, MO, 63021. Phone: (636) 527-5554. Providers update this record themselves, so call before visiting.

How can I verify Andrea Mertens, M.S. CCC SLP's license?

NPPES lists Missouri license number 2013021681, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.