Stephen Irwin, MD
NPI 1891371423 · Child & Adolescent Psychiatry Physician · Saint Louis, MO
Enrolled with Medicare as Order and Referring Only - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Irwin, MD is a Child & Adolescent Psychiatry Physician provider in Saint Louis, MO (NPI 1891371423).
Provider details
- NPI number
- 1891371423
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
5 yrs in NPPES registry
- Profile completeness33% of score
83% 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 75 | 17 |
| Sertraline Hcl | 47 | — |
| Mirtazapine | 41 | — |
| Clonazepam | 33 | — |
| Duloxetine Hcl | 33 | — |
| Fluoxetine Hcl | 32 | — |
| Prazosin Hcl | 28 | — |
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)
- 1 Childrens PlSaint Louis, MO 63110-1002Phone: (314) 286-1700
Registry dates
- Enumerated
- 2021-03-23
- Last updated
- 2025-08-04
- Certified
- 2025-08-04
Frequently asked questions
- What is Stephen Irwin's NPI number?
- Stephen Irwin's National Provider Identifier (NPI) is 1891371423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Irwin's specialty?
- Stephen Irwin is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Irwin located?
- Stephen Irwin's practice location on file with NPPES is 4444 Forest Park Ave Ste 2600, Saint Louis, MO 63108-2212.
- What is Stephen Irwin's phone number?
- The practice phone number listed in the NPPES registry for Stephen Irwin is (314) 286-1700.
- Does Stephen Irwin accept Medicare?
- Stephen Irwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Irwin's NPI active?
- Yes — Stephen Irwin's NPI (1891371423) is active in the NPPES registry as of the last update on 2025-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.