STEPHANIE D MARSHALL DO
NPI 1124002738
Internal Medicine - Cardiovascular Disease in Merrillville, IN
About Stephanie D Marshall Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHANIE D MARSHALL DO (NPI 1124002738) is an individual cardiovascular disease provider in Merrillville, Indiana, licensed in Indiana (02001947A) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Central Dupage Hospital, and maintains a secondary practice location in South Hill.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 2
Accepted 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
Stephanie D Marshall Do 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.
Medicare Billing Reassignments
12Medicare enrollment records show Stephanie Marshall reassigns Medicare billing to 12 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Merrillville, IN 46410
- Reassigned Medicare billing, Indiana enrollment
Oakbrook Terrace, IL 60181
- Reassigned Medicare billing, Indiana enrollment
- 11 clinicians in this Medicare group
Mt Pleasant, MI 48858
- Reassigned Medicare billing, Michigan enrollment
- 321 clinicians in this Medicare group
Flushing, MI 48433
- Reassigned Medicare billing, Michigan enrollment
- 416 clinicians in this Medicare group
Stevens Point, WI 54482
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Aspirus Medical Group, Inc.
- 415 clinicians in this Medicare group
Petoskey, MI 49770
- Reassigned Medicare billing, Michigan enrollment
- 149 clinicians in this Medicare group
Lock Haven, PA 17745
- Reassigned Medicare billing, Pennsylvania enrollment
- 19 clinicians in this Medicare group
Ashland, PA 17921
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: St Lukes Physician Group Inc
- 2,851 clinicians in this Medicare group
Orwigsburg, PA 17961
- Reassigned Medicare billing, Pennsylvania enrollment
- 953 clinicians in this Medicare group
Newport, VT 05855
- Reassigned Medicare billing, Vermont enrollment
- Also billed through NPI 1417023904 (Vermont)
- 36 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 12
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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Medicine Central Dupage Hospital
Acute Care Hospitals · Winfield, ILMethodist Hospitals Inc
Acute Care Hospitals · Gary, INFranciscan Health Dyer
Acute Care Hospitals · Dyer, INCommunity Hospital
Acute Care Hospitals · Munster, INMclaren Northern Michigan
Acute Care Hospitals · Petoskey, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 46410 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MERRILLVILLE, IN 46410
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 Stephanie Marshall's NPI number?
The NPI number for Stephanie Marshall is 1124002738. It was assigned to this individual provider in the NPPES registry on December 6, 2005.
Where is Stephanie Marshall located?
Stephanie Marshall practices at 8684 Connecticut St Ste A, Merrillville, IN 46410. The listed phone number is (192) 472-8990.
What is Stephanie Marshall's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Stephanie Marshall enrolled in Medicare?
Yes. Stephanie Marshall 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 organizations bill Medicare for Stephanie Marshall's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie Marshall reassigns Medicare benefits to 12 organizations: Queen Of Hearts Cardiovascular & Family Healthcare LLC (Merrillville, IN), Community Home Physicians, LLC (Oakbrook Terrace, IL), Mclaren Central Michigan (Mt Pleasant, MI), Mclaren Medical Group (Flushing, MI), Aspirus Wausau Hospital, Inc. (Stevens Point, WI) and 7 more organizations, listed in the Medicare section above. Each 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 Stephanie Marshall's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Stephanie Marshall accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and Blue Cross and Blue Shield of Louisiana and 6 other insurers list Stephanie Marshall 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.
Is Stephanie Marshall affiliated with any hospitals?
According to CMS data, Stephanie Marshall is affiliated with Northwestern Medicine Central Dupage Hospital, Methodist Hospitals Inc, Franciscan Health Dyer, Community Hospital and Mclaren Northern Michigan.
When was this NPI record last updated?
The NPPES record for Stephanie Marshall was last updated on September 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Stephanie D Marshall, DO · NPI 1124002738
Cardiovascular Disease physician in Merrillville, Indiana. Individual provider, active in the CMS NPPES registry since December 6, 2005.
## Identity
- **NPI:** 1124002738 (Entity type: Individual)
- **Enumerated:** December 6, 2005
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 02001947A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 8684 CONNECTICUT ST STE A, Merrillville, IN 46410-5581
- **Phone:** (192) 472-8990 · **Fax:** (219) 472-0270
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 12 organizations under Medicare reassignment (form CMS-855R): Queen Of Hearts Cardiovascular & Family Healthcare LLC (NPI 1720651862, Merrillville, IN); Community Home Physicians, LLC (NPI 1568909505, Oakbrook Terrace, IL); Mclaren Central Michigan (NPI 1245266063, Mt Pleasant, MI); Mclaren Medical Group (NPI 1053458091, Flushing, MI); Aspirus Wausau Hospital, Inc. (NPI 1275886749, Stevens Point, WI); and 7 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1996
## Record status
- **NPPES last updated:** September 3, 2026
- **Other identifiers:** Other 000000375757 (IN); Medicaid 200270150 (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1124002738) · Data from the CMS NPPES public registry.