WILLIAM GREENFIELD MD
NPI 1124118617
Obstetrics & Gynecology - Gynecology in Little Rock, AR

Q: What is William Greenfield's NPI number?

The NPI number for William Greenfield is 1124118617. It was assigned to this individual provider in the NPPES registry on October 13, 2006.

Q: What is William Greenfield's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecology, with taxonomy code 207VG0400X.

Active since October 13, 2006PECOS Enrolled

4301 W MARKHAM ST # 783, LITTLE ROCK, AR 72205(501) 686-8000 Get Directions Write a Review

NPPES record last updated: July 31, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About William Greenfield Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM GREENFIELD MD (NPI 1124118617) is an individual gynecology provider in Little Rock, Arkansas, licensed in Arkansas (E-4083) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Meharry Medical College School Of Medicine (1999).

NPPES Registry Identity

NPI1124118617

Entity TypeIndividualMale

Primary Taxonomy207VG0400X

Provider Legal NameWILLIAM GREENFIELDCredential: MD

Location Address4301 W MARKHAM ST # 783Little Rock, AR 72205-7101

Mailing Address4301 W Markham St # 783Little Rock, AR 72205-7101 · (501) 686-8000

Phone(501) 686-8000

Sole ProprietorNo

Medical School CMSMeharry Medical College School Of MedicineGraduated 1999

Enumeration DateOctober 13, 2006

Last NPPES UpdateJuly 31, 2007

✔ NPI 1124118617 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207VG0400X

License✔ Licensed in AR · E-4083

Definition

A physician who specializes in diagnosis, treatment, and management of patients with gynecologic conditions. Source: National Uniform Claim Committee

Also ListedObstetrics & Gynecology · ObstetricsTaxonomy 207VX0000X · License E-4083 (AR)

4301 W MARKHAM ST # 783, Little Rock, AR 72205

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Other Identifiers 2

Medicare PIN5M938

Medicare UPINI07879

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Greenfield Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6608855564

PECOS Enrollment IDI20040715000498

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show William Greenfield reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Arkansas For Medical Sciences

Same address

Advanced Practice Midwife

4301 W MARKHAM ST # 783
Little Rock, AR 72205

Reassigned Medicare billing, Arkansas enrollment
2,038 clinicians in this Medicare group

NPI 1043372220 (501) 686-8000

Arkansas Department Of Health Payroll Office

0.4 mi

Public Health or Welfare

4815 W MARKHAM ST
Little Rock, AR 72205

Reassigned Medicare billing, Arkansas enrollment
34 clinicians in this Medicare group

NPI 1619195906 (501) 280-4813

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, medroxyprogesterone acetate, 1 mg J1050

Medroxyprogesterone acetate is a hormone injection given by a healthcare professional. It helps regulate the body's natural processes. The 1 mg dose refers to the amount of medication in each injection. It's important to follow your doctor's instructions for this treatment.

5,400 services35 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

36 services35 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

20 services15 patients

Urine pregnancy test 81025

A urine pregnancy test is a simple procedure that checks if you might be expecting a baby. It works by detecting a specific hormone in your urine that is only present when a baby is potentially on the way. It's a quick, easy and private method to get early information.

19 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 72205 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$119.36 typical visit price

range $51.36 – $157.74

Typical copayment $29.84 (range $12.84 – $39.43)

Most-billed visit code 99204

Established Patient

$64.56 typical visit price

range $16.16 – $128.77

Typical copayment $16.14 (range $4.04 – $32.19)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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