JOANNE MAYER MSSA, LISW-S, LCSW
NPI 1346265865
Social Worker - Clinical in King Of Prussia, PA

Active since July 13, 2006PECOS EnrolledAccepts Medicare Assignment
1005 W 9TH AVE STE B, KING OF PRUSSIA, PA 19406(610) 892-3800 Get Directions Write a Review

NPPES record last updated: April 9, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Joanne Mayer Mssa, Lisw-s, Lcsw NPPES

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

JOANNE MAYER MSSA, LISW-S, LCSW (NPI 1346265865) is an individual clinical provider in King Of Prussia, Pennsylvania, licensed in Pennsylvania (CW018672) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1998).

NPPES Registry Identity

NPI1346265865
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameJOANNE MAYERCredential: MSSA, LISW-S, LCSW
Location Address1005 W 9TH AVE STE BKing Of Prussia, PA 19406-1202
Mailing Address1005 W 9th Ave Ste BKing Of Prussia, PA 19406-1202
Sole ProprietorYes
Medical School CMSOtherGraduated 1998
Enumeration DateJuly 13, 2006
Last NPPES UpdateApril 9, 2024
NPPES CertifiedApril 9, 2024
✔ NPI 1346265865 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in PA · CW018672✔ Licensed in OH · I-0008960
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.
1005 W 9TH AVE STE B, King Of Prussia, PA 19406

Other Identifiers 1

Other000000333459OH · Anthem Pin Number

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Joanne Mayer Mssa, Lisw-s, Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8325348048
PECOS Enrollment IDI20151202002598
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 Joanne Mayer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Psychiatry
1055 E BALTIMORE PIKE STE 303
Media, PA 19063
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 353 clinicians in this Medicare group

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 1 hour 90837
Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 1-hour session, you'll talk about your feelings, thoughts, and behaviors to help identify and manage mental health issues. This process aids in personal growth, healing, and improved well-being.
226 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19406 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 $59.88 – $180.99
Typical copayment $0.00 (range $14.97 – $45.24)
Most-billed visit code NA
Established Patient
$74.47 typical visit price
range $19.30 – $147.29
Typical copayment $18.61 (range $4.82 – $36.82)
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.

Other Providers at the Same Location NPPES 6

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

Psychologist (Clinical)
1005 W 9TH AVE STE B
KING OF PRUSSIA, PA 19406
Counselor (Professional)
1005 W 9TH AVE STE B
KING OF PRUSSIA, PA 19406
Psychologist
1005 W 9TH AVE STE B
KING OF PRUSSIA, PA 19406
Counselor (Professional)
1005 W 9TH AVE STE B
KING OF PRUSSIA, PA 19406
Counselor (Mental Health)
1005 W 9TH AVE STE B
KING OF PRUSSIA, PA 19406
Counselor (Professional)
1005 W 9TH AVE STE B
KING OF PRUSSIA, PA 19406

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 Joanne Mayer's NPI number?

The NPI number for Joanne Mayer is 1346265865. It was assigned to this individual provider in the NPPES registry on July 13, 2006.

Where is Joanne Mayer located?

Joanne Mayer practices at 1005 W 9th Ave Ste B, King Of Prussia, PA 19406. The listed phone number is (610) 892-3800.

What is Joanne Mayer's specialty?

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

Is Joanne Mayer enrolled in Medicare?

Yes. Joanne Mayer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Joanne Mayer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joanne Mayer reassigns Medicare benefits to Delaware County Professional Services, Inc (Media, PA). 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 Joanne Mayer'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 Joanne Mayer was last updated on April 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.