Roy Auer, M.D.
NPI 1700851987 · Diagnostic Radiology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roy Auer, M.D. is a Diagnostic Radiology Physician provider in Saint Louis, MO (NPI 1700851987).
Provider details
- NPI number
- 1700851987
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- R5E23 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
174 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 66 | $8 |
| X-Ray of Chest, 2 Views71046 | 35 | $10 |
| X-Ray of Knee, 4 Or More Views73564 | 24 | $11 |
| X-Ray of Lower and Sacral Spine, 2-3 Views72100 | 18 | $11 |
| X-Ray of Hip, 2-3 Views73502 | 16 | $10 |
| X-Ray of Abdomen, 1 View74018 | 15 | $9 |
Typical Medicare-allowed amounts for these services range $8–$11 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-21
- Last updated
- 2007-08-24
Frequently asked questions
- What is Roy Auer's NPI number?
- Roy Auer's National Provider Identifier (NPI) is 1700851987, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy Auer's specialty?
- Roy Auer is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Roy Auer located?
- Roy Auer's practice location on file with NPPES is 6420 Clayton Rd, Saint Louis, MO 63117-1811.
- What is Roy Auer's phone number?
- The practice phone number listed in the NPPES registry for Roy Auer is (314) 768-8250.
- Does Roy Auer accept Medicare?
- Roy Auer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roy Auer's NPI active?
- Yes — Roy Auer's NPI (1700851987) is active in the NPPES registry as of the last update on 2007-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.