Matthew Greydanus
NPI 1417693821 · Student in an Organized Health Care Education/Training Program · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Greydanus is a Student in an Organized Health Care Education/Training Program provider in Chicago, IL (NPI 1417693821).
Provider details
- NPI number
- 1417693821
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2022-05-09
- Last updated
- 2022-05-09
- Certified
- 2022-05-09
Frequently asked questions
- What is Matthew Greydanus's NPI number?
- Matthew Greydanus's National Provider Identifier (NPI) is 1417693821, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Greydanus's specialty?
- Matthew Greydanus 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 Matthew Greydanus located?
- Matthew Greydanus's practice location on file with NPPES is 600 S Paulina St Ste 403, Chicago, IL 60612-3806.
- What is Matthew Greydanus's phone number?
- The practice phone number listed in the NPPES registry for Matthew Greydanus is (312) 942-7100.
- Does Matthew Greydanus accept Medicare?
- Matthew Greydanus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Greydanus's NPI active?
- Yes — Matthew Greydanus's NPI (1417693821) is active in the NPPES registry as of the last update on 2022-05-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.