Mckenzie Jaelynn Mercer , MS CCC-SLP

Speech-Language Pathologist • Phoenix, AZ

Active NPI 1992551246 Individual Practitioner Female Practitioner

Practice location in NPPES

3303 N. 44th Street
Phoenix, AZ 85018

Call 4804780444 Location details and other listings

Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Mckenzie Mercer is listed in NPPES under Speech-Language Pathologist.
NPI assigned on April 26, 2024; this date does not establish years in practice.
No Medicare Part B / Part D records for this NPI in the CMS files shown here. CMS covers only Medicare fee-for-service / Part D claims and omits records with fewer than 11 beneficiaries, so this does not show whether the provider accepts Medicare or prescribes.

Practice Location & Contact Primary Location

Practice Address

3303 N. 44th Street

Phoenix, AZ 85018

Telephone 4804780444

Fax 6028547422

Before You Book

Paying without insurance? Prepare a cost-estimate request

Ask about interpreters and office accessibility

Organization at the Same NPPES Address or Phone

Phoenix Autism Center, Llc Facility NPI 1922718683

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 6 distinct additional practice-address records in Gilbert, AZ; Glendale, AZ; Goodyear, AZ and 2 more. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

What Public CMS Data Show

These CMS figures cover limited populations and published records; they are not quality ratings or medical advice.

Speech-Language Pathologist: NPPES taxonomy is a reported classification, not proof of board certification.

NPI first issued

2024

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Phoenix and Arizona

934 active clinicians are listed under Speech-Language Pathologist with a practice address in Phoenix, AZ (4,510 in Arizona).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Phoenix

0.4% of these 934 clinicians have the CMS telehealth indicator.

1.7% of these 934 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2026-05-11

Speech-Language Pathologist Primary Specialty

NUCC Taxonomy Code: 235Z00000X

License # reported to NPPES AZ SLP15847

The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Arizona Medical Board.

Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID

181500 (AZ)

Secondary Practice Locations

2820 E Broadway Rd

Mesa, AZ 852041703

Phone: 4804780444

13934 N 59th Ave Ste 160

Glendale, AZ 853064168

Phone: 4804780444

3941 E Baseline Rd Ste 101

Gilbert, AZ 852342750

Phone: 4807875387

4560 N 19th Ave

Phoenix, AZ 850154133

Phone: 4804780444

4801 E Mcdowell Rd # 175

Phoenix, AZ 850087725

Phone: 4804780444

140 N Litchfield Rd Ste 104

Goodyear, AZ 853381277

Phone: 4804780444

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

15 Historical Events

📍

Updated Practice Location May 11, 2026

Registered at 3303 N. 44TH STREET, PHOENIX, AZ 85018 (Tel: 4804780444)

📍

Updated Business Mailing Address May 11, 2026

Registered at 3303 N. 44TH STREET, PHOENIX, AZ 85018 (Tel: 4804780444)

📍

Updated Practice Location June 23, 2025

Registered at 3941 E BASELINE RD STE 101, GILBERT, AZ 852342750 (Tel: 4807875387)

📍

Updated Business Mailing Address June 23, 2025

Registered at 9150 W INDIAN SCHOOL RD STE 130, PHOENIX, AZ 850372388 (Tel: 4807875387)

👤

Provider Name / Credentials Updated June 23, 2025

Recorded as MCKENZIE MERCER, M.S. CCC-SLP

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 23, 2025

Speech-Language Pathologist (license number reported to NPPES: AZ SLP15847)

📍

Updated Practice Location January 13, 2025

Registered at 60 E RIO SALADO PKWY STE 900, TEMPE, AZ 852819126 (Tel: 9706235866)

📍

Updated Business Mailing Address January 13, 2025

Registered at 3382 E ARIS DR, GILBERT, AZ 852984213 (Tel: 9706235866)

📍

Updated Practice Location November 24, 2024

Registered at 3941 E BASELINE RD STE 101, GILBERT, AZ 852342750 (Tel: 9706235866)

✅

NPI Profile Active April 26, 2024

NPI status registered as active in NPPES database

📍

Practice Location (Initial Record) April 26, 2024

Registered at 4530 BELTWAY DR, ADDISON, TX 750013707 (Tel: 2146360871)

📍

Business Mailing Address (Initial Record) April 26, 2024

Registered at 15480 DALLAS PKWY # 75248, DALLAS, TX 752484633 (Tel: 9706235866)

👤

Provider Name / Credentials (Initial Record) April 26, 2024

Recorded as MCKENZIE MERCER

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 26, 2024

Speech-Language Pathologist (license number reported to NPPES: TX 122024)

🟢

Initial NPI Registration & Enumeration April 26, 2024

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1992551246

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: April 26, 2024

Last Update: May 11, 2026

Sole Proprietor: Yes

Update or Correct Profile

Other Speech-Language Pathologists in Phoenix

All Speech-Language Pathologists in Phoenix

Mailing Address

3303 N. 44th Street

Phoenix, AZ 85018

Phone: 4804780444

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.