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

William Greenfield, MD

Individual provider Gynecology Physician · NPI 1124118617

William Greenfield, MD practises Obstetrics/Gynecology in Little Rock, Arkansas. Graduated from Meharry Medical College School of Medicine in 1999, 27 years ago. Practices with University of Arkansas for Medical Sciences, a 1,144-clinician group. Licensed in Arkansas.

Years since qualifying
27
Trained at
Meharry Medical College School of Medicine
Licensed in
AR
In the registry since
2006
Specialties on file
2
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

4301 W Markham St # 783
Little Rock, AR 72205-7101 Not confirmed with CMS for 19 years — call before visiting
Phone: (501) 686-8000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gynecology Physician (primary) Taxonomy 207VG0400X · Licence E-4083 (AR)
Obstetrics Physician Taxonomy 207VX0000X · Licence E-4083 (AR)

Record details

NPI number1124118617
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 13, 2006
Last updated in NPPESJuly 31, 2007

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolMEHARRY MEDICAL COLLEGE SCHOOL OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice University Of Arkansas For Medical Sciences — 1144 clinicians
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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 patients62
Services billed 5,509 a service is one billed item, such as a visit, a test or a procedure
Average patient age48

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 $80 2 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.

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 Little Rock