Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Upton Gardner Siddons Sr., MD

Individual provider Family Medicine Physician · NPI 1871084301

Dr. Upton Gardner Siddons Sr., MD is registered under 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.

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Practice location Address checks out

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

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

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times
Removal or shaving of skin growth 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients290
Services billed 1,556 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $427 20 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Baptist Health - Fort Smith Hospital · Fort Smith, AR · listed as Select Specialty Hospital - Fort Smith Inc
  • Baptist Health Medical Center-Little Rock Hospital · Little Rock, AR · listed as Baptist Health Medical Center
  • Mercy Hospital Fort Smith Hospital · Fort Smith, AR
  • Access Home Health Home health agency · Fort Smith, AR
  • Adoration Home Health Home health agency · Van Buren, AR
  • Elite Home Health Home health agency · Fort Smith, AR
  • Kindred At Home 1 Home health agency · Fort Smith, AR
  • Mercy Hospice Hospice · Fort Smith, AR

Colleagues at University of Arkansas for Medical Sciences

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1144 clinicians in the practice; 12 are shown here.

Other providers in Greenwood