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MICHAEL AARON MARCINIEC AGACNP-BC
NPI 1770937294
Nurse Practitioner - Acute Care in Indianapolis, IN

Active since April 21, 2016PECOS Enrolled
8330 NAAB RD STE 340, INDIANAPOLIS, IN 46260(317) 338-5100 Get Directions Write a Review

NPPES record last updated: November 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 12, 2025, Jul 21, 2022, Mar 6, 2019 and 5 more (8 updates tracked since 2016).

About Michael Aaron Marciniec Agacnp-bc NPPES

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

MICHAEL AARON MARCINIEC AGACNP-BC (NPI 1770937294) is an individual acute care provider in Indianapolis, Indiana, licensed in Indiana (71006307A) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1770937294
Entity TypeIndividualMale
Primary Taxonomy363LA2100X
Provider Legal NameMICHAEL AARON MARCINIECCredential: AGACNP-BC
Location Address8330 NAAB RD STE 340Indianapolis, IN 46260-2279
Mailing Address8330 Naab Rd Ste 340Indianapolis, IN 46260-2279 · (317) 698-8621
Phone(317) 338-5100
Sole ProprietorNo
Enumeration DateApril 21, 2016
Last NPPES UpdateNovember 12, 20258 updates tracked since enumeration
NPPES CertifiedNovember 12, 2025
✔ NPI 1770937294 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Acute CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2100X
License✔ Licensed in IN · 71006307A
Also ListedNurse Practitioner · GerontologyTaxonomy 363LG0600X · License 71006307A (IN)
8330 NAAB RD STE 340, Indianapolis, IN 46260
Open in Google Maps ↗

Other Identifiers 1

Medicaid201383010IN

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 (PECOS)

Michael Aaron Marciniec Agacnp-bc 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 Michael Marciniec reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

St. Vincent Medical Group, Inc.
0.3 mi
Internal Medicine
8402 HARCOURT RD STE 120
Indianapolis, IN 46260
  • Reassigned Medicare billing, Indiana enrollment
  • 945 clinicians in this Medicare group
NPI 1710708367 (317) 582-8600

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 46260 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
$82.04 typical visit price
range $53.07 – $161.76
Typical copayment $20.51 (range $13.26 – $40.44)
Most-billed visit code 99203
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
Most-billed visit code 99214
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 10

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

EMILY KELLY KOFFEL AGACNP-BC
Nurse Practitioner (Acute Care)
8330 NAAB RD STE 340
INDIANAPOLIS, IN 46260
Marion County (317) 338-5100
DR. MATTHEW LEE MITCHELL M.D.
Internal Medicine (Critical Care Medicine)
8330 NAAB RD STE 340
INDIANAPOLIS, IN 46260
Marion County (317) 338-5100
MATTHEW J NELSEN MD
Internal Medicine
8330 NAAB RD STE 340
INDIANAPOLIS, IN 46260
Marion County (317) 415-6230
NICOLE MARIE MCKINNEY AGACNP-BC
Nurse Practitioner (Acute Care)
8330 NAAB RD STE 340
INDIANAPOLIS, IN 46260
Marion County (317) 338-5100
ST. VINCENT MEDICAL GROUP, INC.
Preventive Medicine (Occupational Medicine)
8330 NAAB RD STE 340
INDIANAPOLIS, IN 46260
Marion County (317) 338-4015
HEATHER LYNN MISRA MD
Internal Medicine (Pulmonary Disease)
8330 NAAB RD STE 340
INDIANAPOLIS, IN 46260
Marion County (317) 338-5100
MRS. CLAIRE CLOUSE AG-ACNP
Nurse Practitioner (Acute Care)
8330 NAAB RD STE 340
INDIANAPOLIS, IN 46260
Marion County (317) 338-5100
WILLIAM BYRON MD
Internal Medicine (Pulmonary Disease)
8330 NAAB RD STE 340
INDIANAPOLIS, IN 46260
Marion County (317) 338-5100

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 Michael Marciniec's NPI number?

The NPI number for Michael Marciniec is 1770937294. It was assigned to this individual provider in the NPPES registry on April 21, 2016.

Where is Michael Marciniec located?

Michael Marciniec practices at 8330 Naab Rd Ste 340, Indianapolis, IN 46260. The listed phone number is (317) 338-5100.

What is Michael Marciniec's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.

Is Michael Marciniec enrolled in Medicare?

Yes. Michael Marciniec is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Michael Marciniec's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Marciniec reassigns Medicare benefits to St. Vincent Medical Group, Inc. (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 Michael Marciniec's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Marciniec accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and CareSource list Michael Marciniec 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 Michael Marciniec was last updated on November 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.