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

Dr. Upton Gardner Siddons Sr., MD

Individual provider Family Medicine Physician · NPI 1871084301

Dr. Upton Gardner Siddons Sr., MD is a Family Practice in Greenwood, Arkansas. Qualified in 2021, 5 years ago. Practices with University of Arkansas for Medical Sciences, a 1,144-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arkansas.

Years since qualifying
5
Licensed in
AR
In the registry since
2018
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

1480 W Center St
Greenwood, AR 72936-3449
Phone: (479) 996-5585
Show map & directions

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

Additional practice locations (1)

  • Uams - West, Fort Smith, AR 72901 — (479) 785-2431

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence E-12892 (AR)

Record details

NPI number1871084301
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 21, 2018
Last updated in NPPESMay 10, 2022
Certification dateMay 10, 2022
Mailing address11001 Executive Center Dr Ste 200, Little Rock, AR 72211-4393

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice University Of Arkansas For Medical Sciences — 1144 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Greenwood