HOLLY ELLEN STEWART MD
NPI 1164453056
Psychiatry & Neurology - Psychiatry in Pittsburgh, PA
About Holly Ellen Stewart Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HOLLY ELLEN STEWART MD (NPI 1164453056) is an individual psychiatry provider in Pittsburgh, Pennsylvania, licensed in Pennsylvania (MD425191) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Pittsburgh School Of Medicine (2002).
NPPES Registry Identity
Specialties & Licenses
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
Holly Ellen Stewart Md 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 Reassignment
Medicare enrollment records show Holly Stewart reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Pittsburgh, PA 15233
- Reassigned Medicare billing, Pennsylvania enrollment
- 35 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 15212 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
PITTSBURGH, PA 15212
PITTSBURGH, PA 15212
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 Holly Stewart's NPI number?
The NPI number for Holly Stewart is 1164453056. It was assigned to this individual provider in the NPPES registry on July 6, 2006.
Where is Holly Stewart located?
Holly Stewart practices at 412 E Commons, Pittsburgh, PA 15212. The listed phone number is (412) 323-4500.
What is Holly Stewart's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Holly Stewart enrolled in Medicare?
Yes. Holly Stewart 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 Holly Stewart's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Holly Stewart reassigns Medicare benefits to Mercy Life Center Corporation (Pittsburgh, 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 Holly Stewart'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 Holly Stewart was last updated on March 24, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Holly Ellen Stewart, MD · NPI 1164453056
Psychiatry physician in Pittsburgh, Pennsylvania. Individual provider, active in the CMS NPPES registry since July 6, 2006.
## Identity
- **NPI:** 1164453056 (Entity type: Individual)
- **Enumerated:** July 6, 2006
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** MD425191 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 412 E COMMONS, Pittsburgh, PA 15212-5310
- **Phone:** (412) 323-4500
## 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:** Mercy Life Center Corporation (NPI 1720075104, Pittsburgh, PA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Pittsburgh School Of Medicine, class of 2002
## Record status
- **NPPES last updated:** March 24, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1164453056) · Data from the CMS NPPES public registry.