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MS. MARILYN MEJIA LMHC
NPI 1700394905
Counselor - Mental Health in West Hempstead, NY

Active since January 22, 2018PECOS Enrolled
109 NASSAU BLVD, WEST HEMPSTEAD, NY 11552(516) 325-3551 Get Directions Write a Review

NPPES record last updated: May 26, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Ms. Marilyn Mejia Lmhc NPPES

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

MS. MARILYN MEJIA LMHC (NPI 1700394905) is an individual mental health provider in West Hempstead, New York, licensed in New York (015442) and active in the NPI registry since January 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2009).

NPPES Registry Identity

NPI1700394905
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameMS. MARILYN MEJIACredential: LMHC
Location Address109 NASSAU BLVDWest Hempstead, NY 11552-1027
Mailing Address109 Nassau BlvdWest Hempstead, NY 11552-1027 · (516) 325-3551
Phone(516) 325-3551
Sole ProprietorNo
Medical School CMSOtherGraduated 2009
Enumeration DateJanuary 22, 2018
Last NPPES UpdateMay 26, 2026
NPPES CertifiedMay 26, 2026
✔ NPI 1700394905 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in NY · 015442
109 NASSAU BLVD, West Hempstead, NY 11552
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Marilyn Mejia Lmhc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9032645908
PECOS Enrollment IDI20241216002413
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 Reassignments

2

Medicare enrollment records show Marilyn Mejia reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

New York Psychotherapy And Counseling Center
6.4 mi
Community/Behavioral Health
17620 148TH AVE
Jamaica, NY 11434
  • Reassigned Medicare billing, New York enrollment
  • 249 clinicians in this Medicare group
NPI 1902811342 (718) 553-1100
Grow Healthcare Group PA
1,095 mi
Mental Health
66 W FLAGLER ST STE 900
Miami, FL 33130
  • Reassigned Medicare billing, New York enrollment
  • 867 clinicians in this Medicare group
NPI 1245845932 (786) 244-7711

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.

MARILYN MEJIA MENTAL HEALTH COUNSELING SERVICES, PLLC
Counselor (Mental Health)
109 NASSAU BLVD
WEST HEMPSTEAD, NY 11552
Nassau County (516) 836-7135

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 Marilyn Mejia's NPI number?

The NPI number for Marilyn Mejia is 1700394905. It was assigned to this individual provider in the NPPES registry on January 22, 2018.

Where is Marilyn Mejia located?

Marilyn Mejia practices at 109 Nassau Blvd, West Hempstead, NY 11552. The listed phone number is (516) 325-3551.

What is Marilyn Mejia's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is Marilyn Mejia enrolled in Medicare?

Yes. Marilyn Mejia is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Marilyn Mejia's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marilyn Mejia reassigns Medicare benefits to 2 organizations: New York Psychotherapy And Counseling Center (Jamaica, NY) and Grow Healthcare Group PA (Miami, FL). 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 Marilyn Mejia'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 Marilyn Mejia was last updated on May 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.