WILLIAM EDWARD GREER IV PA-C
NPI 1336397355
Physician Assistant in Springfield, IL

Q: What is William Greer's NPI number?

The NPI number for William Greer is 1336397355. It was assigned to this individual provider in the NPPES registry on September 3, 2008.

Q: What is William Greer's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Q: When was this NPI record last updated?

The NPPES record for William Greer was last updated on March 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 03, 2008PECOS EnrolledAccepts Medicare Assignment

1025 S 6TH ST, SPRINGFIELD, IL 62703(217) 528-7541(217) 525-7616 Get Directions Write a Review

NPPES record last updated: March 3, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 3, 2026, Aug 23, 2022, Apr 23, 2021 (3 updates tracked since 2021).

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About William Edward Greer Iv Pa-c NPPES

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

WILLIAM EDWARD GREER IV PA-C (NPI 1336397355) is an individual physician assistant in Springfield, Illinois, licensed in Illinois (085003277) and active in the NPI registry since September 2008. He is enrolled in Medicare PECOS, is affiliated with Memorial Medical Center, and is a graduate of Southern Illinois University School Of Medicine (2008).

NPPES Registry Identity

NPI1336397355

Entity TypeIndividualMale

Primary Taxonomy363A00000X

Provider Legal NameWILLIAM EDWARD GREER IVCredential: PA-C

Location Address1025 S 6TH STSpringfield, IL 62703-2403

Mailing Address1025 S 6th StSpringfield, IL 62703-2403 · (217) 528-7541 · Fax (217) 525-7616

Phone(217) 528-7541

Fax(217) 525-7616

Sole ProprietorNo

Medical School CMSSouthern Illinois University School Of MedicineGraduated 2008

Enumeration DateSeptember 3, 2008

Last NPPES UpdateMarch 3, 20263 updates tracked since enumeration

NPPES CertifiedMarch 3, 2026

✔ NPI 1336397355 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363A00000X

License✔ Licensed in IL · 085003277

Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Also ListedPhysician Assistant · SurgicalTaxonomy 363AS0400X · License 085003277 (IL)

1025 S 6TH ST, Springfield, IL 62703

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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

William Edward Greer Iv Pa-c 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 ID3678640992

PECOS Enrollment IDI20080927000258

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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Memorial Medical Center

Acute Care Hospitals · Springfield, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140148

Location701 N First StSpringfield, IL 62702 · Sangamon County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62703 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

$85.71 typical visit price

range $54.80 – $168.44

Typical copayment $21.42 (range $13.70 – $42.11)

Most-billed visit code 99203

Established Patient

$68.64 typical visit price

range $17.16 – $136.56

Typical copayment $17.16 (range $4.29 – $34.14)

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.

JEREMY ELLIOTT

Nurse Practitioner (Family)