Gregory Stiener, MD
NPI 1033270459 · Child & Adolescent Psychiatry Physician · Riverside, RI
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Stiener, MD is a Child & Adolescent Psychiatry Physician provider in Riverside, RI (NPI 1033270459).
Provider details
- NPI number
- 1033270459
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD09170 (RI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$460 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 339 Angell StProvidence, RI 02906-3245Phone: (401) 273-5605Fax: (401) 521-3456
Registry dates
- Enumerated
- 2006-12-12
- Last updated
- 2021-08-13
- Certified
- 2021-08-13
Frequently asked questions
- What is Gregory Stiener's NPI number?
- Gregory Stiener's National Provider Identifier (NPI) is 1033270459, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Stiener's specialty?
- Gregory Stiener is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Stiener located?
- Gregory Stiener's practice location on file with NPPES is 1011 Veterans Memorial Pkwy, Riverside, RI 02915-5061.
- What is Gregory Stiener's phone number?
- The practice phone number listed in the NPPES registry for Gregory Stiener is (401) 432-1000.
- Does Gregory Stiener accept Medicare?
- Gregory Stiener is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Stiener's NPI active?
- Yes — Gregory Stiener's NPI (1033270459) is active in the NPPES registry as of the last update on 2021-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.