Ian Hagemann, MD
NPI 1275795569 · Anatomic Pathology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ian Hagemann, MD is a Anatomic Pathology Physician provider in Saint Louis, MO (NPI 1275795569).
Provider details
- NPI number
- 1275795569
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2011001458 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
650 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 162 | $35 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 134 | $76 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 102 | $26 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 99 | $39 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 78 | $33 |
| Pathology Examination of Tissue Using a Microscope, High Complexity88309 | 55 | $134 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,865 across 2 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
Registry dates
- Enumerated
- 2008-06-27
- Last updated
- 2025-04-17
Frequently asked questions
- What is Ian Hagemann's NPI number?
- Ian Hagemann's National Provider Identifier (NPI) is 1275795569, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ian Hagemann's specialty?
- Ian Hagemann is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Ian Hagemann located?
- Ian Hagemann's practice location on file with NPPES is 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110-1003.
- What is Ian Hagemann's phone number?
- The practice phone number listed in the NPPES registry for Ian Hagemann is (314) 362-5641.
- Does Ian Hagemann accept Medicare?
- Ian Hagemann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ian Hagemann's NPI active?
- Yes — Ian Hagemann's NPI (1275795569) is active in the NPPES registry as of the last update on 2025-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.