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MARISSA LEAH PENN LCSW
NPI 1487133732
Social Worker - Clinical in Knoxville, TN

Active since August 08, 2018PECOS Enrolled
11840 KINGSTON PIKE STE B, KNOXVILLE, TN 37934(865) 588-3173(865) 588-3174 Get Directions Write a Review

NPPES record last updated: October 7, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 7, 2025, Mar 12, 2025, Oct 2, 2024 and 1 more (4 updates tracked since 2018).

About Marissa Leah Penn Lcsw NPPES

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

MARISSA LEAH PENN LCSW (NPI 1487133732) is an individual clinical provider in Knoxville, Tennessee, licensed in Tennessee (9171) and active in the NPI registry since August 2018. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1487133732
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARISSA LEAH PENNCredential: LCSW
Location Address11840 KINGSTON PIKE STE BKnoxville, TN 37934-3861
Mailing Address11840 Kingston Pike Ste BKnoxville, TN 37934-3861 · (865) 588-3173 · Fax (865) 588-3174
Phone(865) 588-3173
Fax(865) 588-3174
Sole ProprietorNo
Enumeration DateAugust 8, 2018
Last NPPES UpdateOctober 7, 20254 updates tracked since enumeration
NPPES CertifiedOctober 7, 2025
✔ NPI 1487133732 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in TN · 9171
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.
Also ListedSocial WorkerTaxonomy 104100000X · License 103216-1 (NY)
11840 KINGSTON PIKE STE B, Knoxville, TN 37934
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BlueCross BlueShield of Tennessee, Cigna Healthcare, Oscar Insurance Company and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marissa Leah Penn 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 Marissa Penn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Healthy Mind Counseling Services, Inc
10 mi
Clinical
6305 LONAS DR STE 101
Knoxville, TN 37909
  • Reassigned Medicare billing, Tennessee enrollment
  • 161 clinicians in this Medicare group
NPI 1457409898 (865) 588-3173

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37934 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 $52.64 – $160.89
Typical copayment $0.00 (range $13.16 – $40.22)
Most-billed visit code NA
Established Patient
$66.01 typical visit price
range $16.72 – $131.41
Typical copayment $16.50 (range $4.18 – $32.85)
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 17

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

DR. SHANNON K. HAYS PH.D.
Psychologist
11840 KINGSTON PIKE STE B
KNOXVILLE, TN 37934
Knox County (865) 588-3173
MRS. JAMIE MICHELLE HARVEY LCSW
Social Worker (Clinical)
11840 KINGSTON PIKE STE B
KNOXVILLE, TN 37934
Knox County (865) 588-3173
CHRISTINA SHELLEY LCSW
Social Worker (Clinical)
11840 KINGSTON PIKE STE B
KNOXVILLE, TN 37934
Knox County (865) 588-3173
TRACINA CROSS LPC
Counselor (Professional)
11840 KINGSTON PIKE STE B
KNOXVILLE, TN 37934
Knox County (865) 588-3173
MARK S. KRYTER LCSW
Social Worker (Clinical)
11840 KINGSTON PIKE STE B
KNOXVILLE, TN 37934
Knox County (865) 588-3173
DR. CARLY ANN CHWAT PH.D.
Psychologist (Clinical)
11840 KINGSTON PIKE STE B
KNOXVILLE, TN 37934
Knox County (865) 588-3173
TONYA S MCCARROLL PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
11840 KINGSTON PIKE STE B
KNOXVILLE, TN 37934
Knox County (865) 588-3173
DIANA BICIUSCA LPC
Counselor (Professional)
11840 KINGSTON PIKE STE B
KNOXVILLE, TN 37934
Knox County (865) 588-3173

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 Marissa Penn's NPI number?

The NPI number for Marissa Penn is 1487133732. It was assigned to this individual provider in the NPPES registry on August 8, 2018.

Where is Marissa Penn located?

Marissa Penn practices at 11840 Kingston Pike Ste B, Knoxville, TN 37934. The listed phone number is (865) 588-3173.

What is Marissa Penn's specialty?

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

Is Marissa Penn enrolled in Medicare?

Yes. Marissa Penn is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Marissa Penn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Penn reassigns Medicare benefits to Healthy Mind Counseling Services, Inc (Knoxville, TN). 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 Marissa Penn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marissa Penn accept?

Health plans from BlueCross BlueShield of Tennessee, Cigna Healthcare, Oscar Insurance Company and UnitedHealthcare list Marissa Penn as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Marissa Penn was last updated on October 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.