WILLIAM MATTHEW WALKER DO
NPI 1184146078
Hospitalist in Evansville, IN

Active since July 12, 2017PECOS EnrolledAccepts Medicare Assignment
600 MARY STREET, EVANSVILLE, IN 47747(812) 450-3036(812) 450-2193 Get Directions Write a Review

NPPES record last updated: September 16, 2019. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Sep 16, 2019, Jul 9, 2019, Jul 12, 2017 (3 updates tracked since 2017).

About William Matthew Walker Do NPPES

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

WILLIAM MATTHEW WALKER DO (NPI 1184146078) is an individual hospitalist provider in Evansville, Indiana, licensed in Indiana (02005727A) and active in the NPI registry since July 2017. He is enrolled in Medicare PECOS, is affiliated with Ferrell Hospital Community Foundations, and is a graduate of University Of Pikeville, Kentucky College Of Osteopathic Med (2016).

NPPES Registry Identity

NPI1184146078
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameWILLIAM MATTHEW WALKERCredential: DO
Location Address600 MARY STREETEvansville, IN 47747-0001
Mailing Address600 Mary StEvansville, IN 47710-1674 · (812) 450-3036 · Fax (812) 450-2193
Fax(812) 450-2193
Sole ProprietorNo
Medical School CMSUniversity Of Pikeville, Kentucky College Of Osteopathic MedGraduated 2016
Enumeration DateJuly 12, 2017
Last NPPES UpdateSeptember 16, 20193 updates tracked since enumeration
NPI 1184146078 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License Licensed in IN · 02005727A
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedFamily MedicineTaxonomy 207Q00000X · License 02005727A (IN)
600 MARY STREET, Evansville, IN 47747

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

William Matthew Walker Do 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 ID1951677046
PECOS Enrollment IDI20171017002224, I20190719002661
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 6

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
452 services176 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
220 services96 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
133 services133 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
108 services107 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
52 services52 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
13 services13 patients

Hospital Affiliations CMS Care Compare 5

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

Ferrell Hospital Community Foundations

Critical Access Hospitals · Eldorado, IL
OwnershipVoluntary non-profit - Private
CMS Certification Number141324
Location1201 Pine StreetEldorado, IL 62930 · Saline County
Emergency services

Hamilton Memorial Hospital

Critical Access Hospitals · Mcleansboro, IL
2/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number141326
Location611 S Marshall AvenueMcleansboro, IL 62859 · Hamilton County
Emergency services

Good Samaritan Hospital

Acute Care Hospitals · Vincennes, IN
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number150042
Location520 S 7th StVincennes, IN 47591 · Knox County
Emergency services Birthing friendly

Deaconess Hospital Inc

Acute Care Hospitals · Evansville, IN
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150082
Location600 Mary StEvansville, IN 47710 · Vanderburgh County
Emergency services

Deaconess Henderson Hospital

Acute Care Hospitals · Henderson, KY
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number180056
Location1305 N Elm StHenderson, KY 42420 · Henderson County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 47747 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
$122.49 typical visit price
range $53.07 – $161.76
Typical copayment $30.62 (range $13.26 – $40.44)
Most-billed visit code 99204
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
4 suppliers16 claims16 services$18.94 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
4 suppliers11 claims11 services$88.41 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

Nurse Practitioner
600 MARY STREET
EVANSVILLE, IN 47747
Pharmacist
600 MARY STREET, DEACONESS HOSPITAL PHARMACY
EVANSVILLE, IN 47747
Nurse Anesthetist, Certified Registered
600 MARY STREET
EVANSVILLE, IN 47747
Anesthesiology
600 MARY STREET
EVANSVILLE, IN 47747
Registered Nurse (Emergency)
600 MARY STREET
EVANSVILLE, IN 47747
Internal Medicine (Interventional Cardiology)
600 MARY STREET
EVANSVILLE, IN 47747
Hospitalist
600 MARY STREET
EVANSVILLE, IN 47747
Pathology (Anatomic Pathology & Clinical Pathology)
600 MARY STREET
EVANSVILLE, IN 47747

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Walker's NPI number?

The NPI number for William Walker is 1184146078. It was assigned to this individual provider in the NPPES registry on July 12, 2017.

Where is William Walker located?

William Walker practices at 600 Mary Street, Evansville, IN 47747. The listed phone number is (812) 450-3036.

What is William Walker's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is William Walker enrolled in Medicare?

Yes. William Walker is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does William Walker accept?

Health plans from CareSource list William Walker as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Walker affiliated with any hospitals?

According to CMS data, William Walker is affiliated with Ferrell Hospital Community Foundations, Hamilton Memorial Hospital, Good Samaritan Hospital, Deaconess Hospital Inc and Deaconess Henderson Hospital.

When was this NPI record last updated?

The NPPES record for William Walker was last updated on September 16, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.