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MARCELLA GORDON WALDER MSW
NPI 1104025428
Social Worker - Clinical in Greenbelt, MD

Active since July 17, 2007Opted out of Medicare · through Jun 1, 2028
16 LAKESIDE DR, GREENBELT, MD 20770(301) 474-2146(301) 474-1544 Get Directions Write a Review

NPPES record last updated: July 17, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Marcella Gordon Walder Msw NPPES

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

MARCELLA GORDON WALDER MSW (NPI 1104025428) is an individual clinical provider in Greenbelt, Maryland, licensed in Maryland (0251) and active in the NPI registry since July 2007. She has opted out of Medicare through June 1, 2028.

NPPES Registry Identity

NPI1104025428
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARCELLA GORDON WALDERCredential: MSW
Location Address16 LAKESIDE DRGreenbelt, MD 20770-1904
Mailing Address16 Lakeside DrGreenbelt, MD 20770-1904 · (301) 474-2146 · Fax (301) 474-1544
Phone(301) 474-2146
Fax(301) 474-1544
Sole ProprietorYes
Enumeration DateJuly 17, 2007
✔ NPI 1104025428 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in MD · 0251
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
16 LAKESIDE DR, Greenbelt, MD 20770
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Other Identifiers 1

Medicare UPINR24698MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Marcella Gordon Walder Msw has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from June 1, 2012 through June 1, 2028.

Opt-Out Effective DateJune 1, 2012
Opt-Out In Effect ThroughJune 1, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20770 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $65.18 – $194.86
Typical copayment $0.00 (range $16.29 – $48.71)
Most-billed visit code NA
Established Patient
$80.66 typical visit price
range $21.40 – $158.88
Typical copayment $20.16 (range $5.35 – $39.72)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Marcella Walder's NPI number?

The NPI number for Marcella Walder is 1104025428. It was assigned to this individual provider in the NPPES registry on July 17, 2007.

Where is Marcella Walder located?

Marcella Walder practices at 16 Lakeside Dr, Greenbelt, MD 20770. The listed phone number is (301) 474-2146.

What is Marcella Walder's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Marcella Walder enrolled in Medicare?

No. Marcella Walder has opted out of Medicare through June 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Marcella Walder was last updated on July 17, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.