Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Brian Patrick Flanagan, MD

Individual provider Adult Reconstructive Orthopaedic Surgery Physician · NPI 1336428010

Brian Patrick Flanagan, MD is an Orthopedic Surgery in Crystal Lake, Illinois. Graduated from R Franklin University of Med & SCI/Chicago Medical School in 2011, 15 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
15
Trained at
R Franklin University of Med & SCI/Chicago Medical School
Licensed in
IL
In the registry since
2011
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

420 N Il Route 31
Crystal Lake, IL 60012
Phone: (815) 356-5200
Fax: (815) 356-5262
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 10370 Haligus Rd Ste 201, Huntley, IL 60142-9582 — (815) 356-5200

Specialties & licences

Adult Reconstructive Orthopaedic Surgery Physician (primary) Taxonomy 207XS0114X · Licence 036-142459 (IL)

Record details

NPI number1336428010
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 11, 2011
Last updated in NPPESOctober 19, 2018
Mailing address420 N Il Route 31, Crystal Lake, IL 60012-3709

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolR FRANKLIN UNIVERSITY OF MED & SCI/CHICAGO MEDICAL SCHOOL
Graduated 2011 (15 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations15 on file with Medicare