GREGORY PAUL STIENER MD
NPI 1033270459
Psychiatry & Neurology - Child & Adolescent Psychiatry in Riverside, RI
About Gregory Paul Stiener Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY PAUL STIENER MD (NPI 1033270459) is an individual child & adolescent psychiatry provider in Riverside, Rhode Island, licensed in Rhode Island (MD09170) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Providence.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Gregory Paul Stiener Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Gregory Stiener reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Riverside, RI 02915
- Reassigned Medicare billing, Rhode Island enrollment
- 99 clinicians in this Medicare group
Providence, RI 02903
- Reassigned Medicare billing, Rhode Island enrollment
- 315 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.
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.
RIVERSIDE, RI 02915
RIVERSIDE, RI 02915
RIVERSIDE, RI 02915
RIVERSIDE, RI 02915
RIVERSIDE, RI 02915
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 Gregory Stiener's NPI number?
The NPI number for Gregory Stiener is 1033270459. It was assigned to this individual provider in the NPPES registry on December 12, 2006.
Where is Gregory Stiener located?
Gregory Stiener practices at 1011 Veterans Memorial Pkwy, Riverside, RI 02915. The listed phone number is (401) 432-1000.
What is Gregory Stiener's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.
Is Gregory Stiener enrolled in Medicare?
Yes. Gregory Stiener is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Gregory Stiener's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Stiener reassigns Medicare benefits to 2 organizations: Emma Pendleton Bradley Hospital (Riverside, RI) and Lifespan Physician Group, Inc. (Providence, RI). 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 Gregory Stiener'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 Gregory Stiener was last updated on August 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Gregory Paul Stiener, MD · NPI 1033270459
Child & Adolescent Psychiatry physician in Riverside, Rhode Island. Individual provider, active in the CMS NPPES registry since December 12, 2006.
## Identity
- **NPI:** 1033270459 (Entity type: Individual)
- **Enumerated:** December 12, 2006
- **Primary specialty:** Psychiatry & Neurology - Child & Adolescent Psychiatry · taxonomy 2084P0804X
- **State license:** MD09170 (Rhode Island)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1011 VETERANS MEMORIAL PKWY, Riverside, RI 02915-5061
- **Phone:** (401) 432-1000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Emma Pendleton Bradley Hospital (NPI 1073705943, Riverside, RI); Lifespan Physician Group, Inc. (NPI 1548506793, Providence, RI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 13, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1033270459) · Data from the CMS NPPES public registry.