Ryan Mitacek, MD
NPI 1639674211 · Pediatric Rheumatology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Mitacek, MD is a Pediatric Rheumatology Physician provider in Chicago, IL (NPI 1639674211).
Provider details
- NPI number
- 1639674211
- Entity type
- Individual
- Primary specialty
- Pediatric Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301511663 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 3901 Beaubien StDetroit, MI 48201-2119Phone: (313) 745-5870
Registry dates
- Enumerated
- 2018-03-27
- Last updated
- 2024-04-12
- Certified
- 2024-04-12
Frequently asked questions
- What is Ryan Mitacek's NPI number?
- Ryan Mitacek's National Provider Identifier (NPI) is 1639674211, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Mitacek's specialty?
- Ryan Mitacek is listed in the NPPES registry with a primary specialty of Pediatric Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Mitacek located?
- Ryan Mitacek's practice location on file with NPPES is 5841 S Maryland Ave # Mc5044, Chicago, IL 60637-1443.
- What is Ryan Mitacek's phone number?
- The practice phone number listed in the NPPES registry for Ryan Mitacek is (773) 702-1000.
- Does Ryan Mitacek accept Medicare?
- Ryan Mitacek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Mitacek's NPI active?
- Yes — Ryan Mitacek's NPI (1639674211) is active in the NPPES registry as of the last update on 2024-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.