MELISSA DASSANAYAKE LCSW
NPI 1679973051
Counselor - Mental Health in Seal Beach, CA

Q: What is Melissa Dassanayake's NPI number?

The NPI number for Melissa Dassanayake is 1679973051. It was assigned to this individual provider in the NPPES registry on September 4, 2014.

Q: What is Melissa Dassanayake's specialty?

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

Active since September 04, 2014PECOS Enrolled

1661 GOLDEN RAIN RD, SEAL BEACH, CA 90740(562) 493-9581(562) 795-6389 Get Directions Write a Review

NPPES record last updated: January 19, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 19, 2026, Aug 4, 2025, Dec 18, 2020 and 1 more (4 updates tracked since 2018).

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About Melissa Dassanayake Lcsw NPPES

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

MELISSA DASSANAYAKE LCSW (NPI 1679973051) is an individual mental health provider in Seal Beach, California and active in the NPI registry since September 2014. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1679973051

Entity TypeIndividualFemale

Primary Taxonomy101YM0800X

Provider Legal NameMELISSA DASSANAYAKECredential: LCSW

Location Address1661 GOLDEN RAIN RDSeal Beach, CA 90740-4907

Mailing AddressPo Box 35380Las Vegas, NV 89133-5380

Phone(562) 493-9581

Fax(562) 795-6389

Sole ProprietorYes

Enumeration DateSeptember 4, 2014

Last NPPES UpdateJanuary 19, 20264 updates tracked since enumeration

NPPES CertifiedJanuary 19, 2026

✔ NPI 1679973051 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

Also ListedSocial WorkerTaxonomy 104100000X

Also ListedSocial Worker · ClinicalTaxonomy 1041C0700X

1661 GOLDEN RAIN RD, Seal Beach, CA 90740

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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)

Melissa Dassanayake Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Melissa Dassanayake reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Healthcare Partners Affiliates Medical Group

15 mi

Addiction Medicine

14591 NEWPORT AVE
Tustin, CA 92780

Reassigned Medicare billing, California enrollment
2,052 clinicians in this Medicare group

NPI 1891981502 (714) 442-4864

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 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DAVID RAE PARK MD

Family Medicine