Ryan Mueller, MD
NPI 1912571654 · Radiation Oncology Physician · O Fallon, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Mueller, MD is a Radiation Oncology Physician provider in O Fallon, IL (NPI 1912571654).
Provider details
- NPI number
- 1912571654
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 125077834 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
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.
$512 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 Barnes Jewish Hospital PlzSaint Louis, MO 63110-1003Phone: (314) 362-9700
Registry dates
- Enumerated
- 2021-05-17
- Last updated
- 2026-04-15
- Certified
- 2026-04-15
Frequently asked questions
- What is Ryan Mueller's NPI number?
- Ryan Mueller's National Provider Identifier (NPI) is 1912571654, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Mueller's specialty?
- Ryan Mueller is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Mueller located?
- Ryan Mueller's practice location on file with NPPES is 321 Regency Park Ste 100, O Fallon, IL 62269-1887.
- What is Ryan Mueller's phone number?
- The practice phone number listed in the NPPES registry for Ryan Mueller is (618) 416-7970.
- Does Ryan Mueller accept Medicare?
- Ryan Mueller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Mueller's NPI active?
- Yes — Ryan Mueller's NPI (1912571654) is active in the NPPES registry as of the last update on 2026-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.