Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

JOHN WINDSOR ESTHER M.D.
NPI 1174056121
Internal Medicine - Hematology & Oncology in Springdale, AR

Active since April 06, 2017PECOS EnrolledAccepts Medicare Assignment
87.7/100
CMS Quality Rating
3901 PARKWAY CIR STE 100, SPRINGDALE, AR 72762(479) 581-7170(479) 587-1366 Get Directions Write a Review

NPPES record last updated: July 6, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jul 6, 2026, Aug 17, 2023, Oct 9, 2018 (3 updates tracked since 2018).

About John Windsor Esther M.d. NPPES

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

JOHN WINDSOR ESTHER M.D. (NPI 1174056121) is an individual hematology & oncology provider in Springdale, Arkansas, licensed in Arkansas (E16209) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of Arkansas College Of Medicine (2017).

NPPES Registry Identity

NPI1174056121
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameJOHN WINDSOR ESTHERCredential: M.D.
Location Address3901 PARKWAY CIR STE 100Springdale, AR 72762-5328
Mailing Address3901 Parkway Cir Ste 100Springdale, AR 72762-5328 · (479) 587-1700 · Fax (479) 587-1366
Fax(479) 587-1366
Sole ProprietorNo
Medical School CMSUniversity Of Arkansas College Of MedicineGraduated 2017
Enumeration DateApril 6, 2017
Last NPPES UpdateJuly 6, 20263 updates tracked since enumeration
NPPES CertifiedJuly 6, 2026
NPI 1174056121 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License Licensed in AR · E16209
Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

3901 PARKWAY CIR STE 100, Springdale, AR 72762

Secondary Practice Locations 3

Location 13232 N Northhills BlvdFayetteville, AR 72703-4005 · Phone (479) 587-1700 · Fax (479) 587-1366
Location 2808 S 52nd StRogers, AR 72758-8602 · Phone (479) 587-1700 · Fax (479) 587-1366
Location 3639 Hospital DrMountain Home, AR 72653-2914 · Phone (479) 587-1700 · Fax (479) 587-1366

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

John Windsor Esther M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9234482878
PECOS Enrollment IDI20230703001332
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.

Areas of Expertise CMS Part B claims 116

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, nivolumab, 1 mg J9299
Nivolumab is a medication given via injection, often used in cancer treatment. It works by helping your immune system fight the cancer cells. The dosage is measured in milligrams (mg), with 1 mg being a common dose.
22,960 services32 patients
Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) Q0138
Ferumoxytol injection is a treatment for iron deficiency anemia, a condition where your body lacks enough iron. It is injected into your vein to increase iron levels, aiding in the production of healthy red blood cells. This treatment is not for ESRD patients.
22,950 services38 patients
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967
Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.
22,323 services193 patients
Injection, pembrolizumab, 1 mg J9271
Pembrolizumab is a medication given via injection to help your body's immune system fight certain types of cancer. It's typically administered in a hospital or clinic by a healthcare professional.
14,800 services30 patients
Injection, gadoterate meglumine, 0.1 ml A9575
Gadoterate meglumine is a contrast agent used in MRI scans to help visualize certain areas of your body more clearly. It's injected into your bloodstream, typically through a vein in your arm, and helps doctors get more detailed images.
13,100 services58 patients
Injection, daratumumab, 10 mg and hyaluronidase-fihj J9144
Daratumumab and hyaluronidase-fihj is an injection administered to treat certain types of blood cancer. The medication works by targeting and killing specific cancer cells. It's often given under the skin to reduce side effects and improve patient comfort.
9,900 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 72762 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
$157.74 typical visit price
range $51.36 – $157.74
Typical copayment $39.43 (range $12.84 – $39.43)
Most-billed visit code 99205
Established Patient
$91.63 typical visit price
range $16.16 – $128.77
Typical copayment $22.90 (range $4.04 – $32.19)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

87.7/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality91.71
Promoting Interoperability93
Improvement Activities40
Cost66.1

Other Providers at the Same Location NPPES 11

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

Massage Therapist
3901 PARKWAY CIR STE 100
SPRINGDALE, AR 72762
Occupational Therapist
3901 PARKWAY CIR STE 100
SPRINGDALE, AR 72762
Nurse Practitioner (Adult Health)
3901 PARKWAY CIR STE 100
SPRINGDALE, AR 72762
Physician Assistant
3901 PARKWAY CIR STE 100
SPRINGDALE, AR 72762
Nurse Practitioner (Family)
3901 PARKWAY CIR STE 100
SPRINGDALE, AR 72762
Family Medicine
3901 PARKWAY CIR STE 100
SPRINGDALE, AR 72762
Internal Medicine (Hospice and Palliative Medicine)
3901 PARKWAY CIR STE 100
SPRINGDALE, AR 72762
Internal Medicine (Hematology & Oncology)
3901 PARKWAY CIR STE 100
SPRINGDALE, AR 72762

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1174056121, enumerated as an "individual" on April 06, 2017.

The provider is located at 3901 PARKWAY CIR STE 100 SPRINGDALE, AR 72762 and the phone number is (479) 581-7170.

Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.

The provider might be accepting Accepts: Ambetter from Arkansas Health & Wellness, Ambetter. Please consult your insurance carrier or call the provider to verify.