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MARISSA ALLISON WILLS LMHC, NCC
NPI 1619584729
Counselor - Mental Health in Indianapolis, IN

Active since September 23, 2020PECOS EnrolledAccepts Medicare Assignment
1700 N ILLINOIS ST, INDIANAPOLIS, IN 46202(317) 880-8491 Get Directions Write a Review

NPPES record last updated: October 2, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Nov 22, 2021, Sep 23, 2020 (2 updates tracked since 2020).

About Marissa Allison Wills Lmhc, Ncc NPPES

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

MARISSA ALLISON WILLS LMHC, NCC (NPI 1619584729) is an individual mental health provider in Indianapolis, Indiana, licensed in Indiana (39002688A) and active in the NPI registry since September 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2012).

NPPES Registry Identity

NPI1619584729
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameMARISSA ALLISON WILLSCredential: LMHC, NCC
Location Address1700 N ILLINOIS STIndianapolis, IN 46202-1316
Mailing AddressPo Box 637764Cincinnati, OH 45263-7764 · (317) 880-3939
Phone(317) 880-8491
Sole ProprietorYes
Medical School CMSOtherGraduated 2012
Enumeration DateSeptember 23, 2020
Last NPPES UpdateOctober 2, 20252 updates tracked since enumeration
NPPES CertifiedOctober 2, 2025
✔ NPI 1619584729 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 IN · 39002688A
1700 N ILLINOIS ST, Indianapolis, IN 46202
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health 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 and accepts Medicare assignment

Marissa Allison Wills Lmhc, Ncc 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 ID749631646
PECOS Enrollment IDI20240104002854
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 Wills reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

The Health And Hospital Corporation Of Marion County
Same address
Federally Qualified Health Center (FQHC)
1660 N ILLINOIS ST
Indianapolis, IN 46202
  • Reassigned Medicare billing, Indiana enrollment
  • 564 clinicians in this Medicare group
NPI 1518536507 (317) 554-5700

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.

Psychiatric diagnostic evaluation 90791
A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.
49 services49 patients

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.

PEARL BISESI
Social Worker (Clinical)
1700 N ILLINOIS ST
INDIANAPOLIS, IN 46202
Marion County (317) 880-8491
JAILYN LIZETH RECINOS LCSW
Social Worker (Clinical)
1700 N ILLINOIS ST
INDIANAPOLIS, IN 46202
Marion County (317) 880-2723
DR. HUNTER THOMAS MUHNEY MD
Psychiatry & Neurology (Psychiatry)
1700 N ILLINOIS ST
INDIANAPOLIS, IN 46202
Marion County (317) 880-8491
SUZANNE SHONKWILER LMHCA
Counselor (Mental Health)
1700 N ILLINOIS ST
INDIANAPOLIS, IN 46202
Marion County (317) 554-5700
RENE F ELSBURY LCSW
Social Worker (Clinical)
1700 N ILLINOIS ST
INDIANAPOLIS, IN 46202
Marion County (317) 880-8491
KATHLEEN STARK
Social Worker (Clinical)
1700 N ILLINOIS ST
INDIANAPOLIS, IN 46202
Marion County (317) 880-8491
DR. STEPHEN RICHARD DUNLOP MD
Psychiatry & Neurology (Psychiatry)
1700 N ILLINOIS ST
INDIANAPOLIS, IN 46202
Marion County (317) 554-2704
BRITTANY MICHELLE GRAY LCSW
Social Worker (Clinical)
1700 N ILLINOIS ST
INDIANAPOLIS, IN 46202
Marion County (317) 931-5107

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 Wills's NPI number?

The NPI number for Marissa Wills is 1619584729. It was assigned to this individual provider in the NPPES registry on September 23, 2020.

Where is Marissa Wills located?

Marissa Wills practices at 1700 N Illinois St, Indianapolis, IN 46202. The listed phone number is (317) 880-8491.

What is Marissa Wills's specialty?

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

Is Marissa Wills enrolled in Medicare?

Yes. Marissa Wills 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 Marissa Wills's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Wills reassigns Medicare benefits to The Health And Hospital Corporation Of Marion County (Indianapolis, IN). 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 Wills's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marissa Wills accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and Anthem Blue Cross and Blue Shield list Marissa Wills 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 Wills was last updated on October 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.