Charles Ryan, MD
NPI 1639910946 · Student in an Organized Health Care Education/Training Program · Ann Arbor, MI
Enrolled with Medicare as Order and Referring Only - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Ryan, MD is a Student in an Organized Health Care Education/Training Program provider in Ann Arbor, MI (NPI 1639910946).
Provider details
- NPI number
- 1639910946
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4351052300 (MI)
Specialties & taxonomies
- Student in an Organized Health Care Education/Training ProgramPrimary390200000XLicense 4351052300 (MI)
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2024-06-03
- Last updated
- 2024-06-03
- Certified
- 2024-06-03
Frequently asked questions
- What is Charles Ryan's NPI number?
- Charles Ryan's National Provider Identifier (NPI) is 1639910946, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Ryan's specialty?
- Charles Ryan is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Charles Ryan located?
- Charles Ryan's practice location on file with NPPES is 1500 E. Medical Center Dr, Ann Arbor, MI 48109.
- What is Charles Ryan's phone number?
- The practice phone number listed in the NPPES registry for Charles Ryan is (734) 763-7919.
- Does Charles Ryan accept Medicare?
- Charles Ryan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Ryan's NPI active?
- Yes — Charles Ryan's NPI (1639910946) is active in the NPPES registry as of the last update on 2024-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.