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

Dr. Don Cassidy Arnold II, MD

Individual provider Urology Physician · NPI 1457501926

Dr. Don Cassidy Arnold II, MD is an Urology in Herrin, Illinois. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 2005, 21 years ago. Practices with Southern Illinois Medical Services Nfp, a 332-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
21
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
IL
In the registry since
2008
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

220 S Park Ave Fl 2
Herrin, IL 62948
Phone: (618) 988-6240
Fax: (618) 351-4814
Show map & directions

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

Additional practice locations (2)

  • 2601 W Main St, Carbondale, IL 62901-1031 — (618) 351-7300
  • 117 E Clark St, Harrisburg, IL 62946-2702 — (618) 252-8625

Specialties & licences

Urology Physician (primary) Taxonomy 208800000X · Licence 036.131997 (IL)

Record details

NPI number1457501926
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 22, 2008
Last updated in NPPESSeptember 10, 2021
Certification dateSeptember 10, 2021

Medicare enrollment

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

Medicare specialtyUROLOGY
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 2005 (21 years in practice)
Group practice Southern Illinois Medical Services Nfp — 332 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations6 on file with Medicare