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MRS. BEGGY LIZ SANTIAGO-MERCADO PHL
NPI 1346734225
Speech-Language Pathologist in Bayamon, PR

Active since June 14, 2018
URB FLAMINGO TERRACE A-9 CALLE MARGINAL, BAYAMON, PR 00957(787) 787-6944 Get Directions Write a Review

NPPES record last updated: January 2, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 2, 2026, Nov 26, 2025, Apr 10, 2019 and 1 more (4 updates tracked since 2018).

About Mrs. Beggy Liz Santiago-mercado Phl NPPES

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

MRS. BEGGY LIZ SANTIAGO-MERCADO PHL (NPI 1346734225) is an individual speech-language pathologist provider in Bayamon, Puerto Rico, licensed in Puerto Rico (4125) and active in the NPI registry since June 2018.

NPPES Registry Identity

NPI1346734225
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameMRS. BEGGY LIZ SANTIAGO-MERCADOCredential: PHL
Location AddressURB FLAMINGO TERRACE A-9 CALLE MARGINALBayamon, PR 00957-4340
Mailing AddressUrb Estancias De La Fuente 141 Calle NardoToa Alta, PR 00953-3685 · (787) 223-7964
Phone(787) 787-6944
Sole ProprietorYes
Enumeration DateJune 14, 2018
Last NPPES UpdateJanuary 2, 20264 updates tracked since enumeration
NPPES CertifiedJanuary 2, 2026
✔ NPI 1346734225 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpeech-Language PathologistSpeech, Language and Hearing Service Providers
Taxonomy Code235Z00000X
License✔ Licensed in PR · 4125
Definition
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.

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Beggy Liz Santiago-mercado Phl is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Beggy Santiago-mercado reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Wernicke Clinical Group
Speech-Language Pathologist
URB FLAMINGO TERRACE CALLE MARGINAL CARR 167 A-9
Bayamon, PR 00961
  • Reassigned Medicare billing, Puerto Rico enrollment
NPI 1063079226 (787) 787-6944

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Beggy Santiago-mercado's NPI number?

The NPI number for Beggy Santiago-mercado is 1346734225. It was assigned to this individual provider in the NPPES registry on June 14, 2018.

Where is Beggy Santiago-mercado located?

Beggy Santiago-mercado practices at Urb Flamingo Terrace A-9 Calle Marginal, Bayamon, PR 00957. The listed phone number is (787) 787-6944.

What is Beggy Santiago-mercado's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

Is Beggy Santiago-mercado enrolled in Medicare?

Yes. Beggy Santiago-mercado is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Beggy Santiago-mercado's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Beggy Santiago-mercado reassigns Medicare benefits to Wernicke Clinical Group (Bayamon, PR). 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 Beggy Santiago-mercado'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 Beggy Santiago-mercado was last updated on January 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.