Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. WILLIAM J EVANS MD
NPI 1619913761
Psychiatry & Neurology - Neurology in Ocean Springs, MS

Q: What is William Evans's NPI number?

The NPI number for William Evans is 1619913761. It was assigned to this individual provider in the NPPES registry on June 20, 2006.

Q: What is William Evans's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Q: When was this NPI record last updated?

The NPPES record for William Evans was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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 June 20, 2006PECOS EnrolledAccepts Medicare Assignment

3631 BIENVILLE BLVD, SUITE A, OCEAN SPRINGS, MS 39564(228) 818-9620(228) 818-9750 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 29, 2026, May 2, 2022 (2 updates tracked since 2022).

On this page

About Dr. William J Evans Md NPPES

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

DR. WILLIAM J EVANS MD (NPI 1619913761) is an individual neurology provider in Ocean Springs, Mississippi, licensed in Mississippi (18874) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Singing River Health System, and is a graduate of Tulane University School Of Medicine (2001).

NPPES Registry Identity

NPI1619913761

Entity TypeIndividualMale

Primary Taxonomy2084N0400X

Provider Legal NameDR. WILLIAM J EVANSCredential: MD

Location Address3631 BIENVILLE BLVD, SUITE AOcean Springs, MS 39564-5702

Mailing Address3631 Bienville Blvd, Suite AOcean Springs, MS 39564-5702 · (228) 818-9620 · Fax (228) 818-9750

Phone(228) 818-9620

Fax(228) 818-9750

Sole ProprietorNo

Medical School CMSTulane University School Of MedicineGraduated 2001

Enumeration DateJune 20, 2006

Last NPPES UpdateSeptember 29, 20262 updates tracked since enumeration

NPPES CertifiedMay 2, 2022

✔ NPI 1619913761 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0400X

License✔ Licensed in MS · 18874

Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

Also ListedPsychiatry & Neurology · Clinical NeurophysiologyTaxonomy 2084N0600X · License 18874 (MS)

3631 BIENVILLE BLVD, Ocean Springs, MS 39564

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Other Identifiers 4

Other646000515Department Of Labor

OtherP00389398Railroad Medicare

Other646000515Commercial

Medicaid01257147MS

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 Health 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 and accepts Medicare assignment

Dr. William J Evans Md 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 ID648274639

PECOS Enrollment IDI20060906000057

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 Evans reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Singing River Health System

0.7 mi

Internal Medicine

3109 BIENVILLE BLVD
Ocean Springs, MS 39564

Reassigned Medicare billing, Mississippi enrollment
450 clinicians in this Medicare group

NPI 1053528109 (228) 818-1111

Singing River Gulfport

19 mi

Multi-Specialty

15190 COMMUNITY RD
Gulfport, MS 39503

Reassigned Medicare billing, Mississippi enrollment
298 clinicians in this Medicare group

NPI 1861010159 (228) 575-7975

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 20

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.

Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle 95874

This procedure involves a needle that measures the electrical activity in your muscles. A chemical is then injected to temporarily paralyze the nerve muscle. This helps in diagnosing and treating certain muscle or nerve conditions.

212 services67 patients

Needle measurement of electrical activity in arm or leg muscles, complete study 95886

This procedure, known as an electromyography (EMG), involves inserting a small needle into your arm or leg muscles to measure their electrical activity. This complete study helps diagnose issues with nerves or muscles, providing valuable data for your treatment plan.

198 services130 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

128 services119 patients

Injection of chemical for paralysis of nerve muscles on side of neck excluding voice box 64616

This procedure involves injecting a chemical into specific neck muscles, causing temporary paralysis. It's designed to alleviate symptoms related to nerve disorders. The voice box isn't affected, ensuring normal speech post-procedure.

116 services37 patients

Injection of chemical for paralysis of nerve muscles on arm or leg, 5 or more muscles, first extremity 64644

This procedure involves injecting a chemical into specific muscles in an arm or leg to temporarily paralyze them. It's typically used to manage muscular disorders or reduce muscle activity. The process targets 5 or more muscles in the first extremity.

85 services26 patients

Injection of chemical for paralysis of nerve muscles on arm or leg, 1-4 muscles, each additional extremity 64643

This procedure involves injecting a special chemical into 1-4 muscles in an arm or leg to temporarily paralyze them. This can help manage pain or muscle disorders. If needed, the process can be repeated on an additional limb.

76 services25 patients

Nerve conduction, 9-10 studies 95911

Nerve conduction studies involve sending small electrical shocks through the skin to measure how quickly nerves transmit signals. This helps detect nerve damage. 9-10 studies mean this process will be repeated on different nerves to gather comprehensive data.

59 services59 patients

Nerve conduction, 7-8 studies 95910

Nerve conduction studies involve testing the speed and strength of signals traveling through your nerves. This helps doctors identify nerve damage. In a 7-8 study procedure, 7-8 specific nerves are tested. You may feel a mild, brief tingling or shock during the test.

51 services51 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.

43 services43 patients

Injection of chemical for paralysis of nerve muscles on side of face 64612

This procedure involves injecting a chemical into specific facial nerves, causing temporary muscle paralysis. It's used to treat conditions like facial spasms or wrinkles. The effects are usually temporary, requiring repeat treatments.

42 services13 patients

Injection of chemical for paralysis of nerve muscles on arm or leg, 1-4 muscles, first extremity 64642

This procedure involves injecting a chemical into specific muscles in your arm or leg, causing temporary paralysis. It targets 1-4 muscles in the first extremity. It's often used to manage conditions that cause muscle spasms or overactivity.

42 services15 patients

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.

39 services27 patients

Injection of chemical for paralysis of facial and neck nerve muscles on both sides of face 64615

This procedure involves injecting a chemical into specific facial and neck muscles, causing temporary paralysis. This helps reduce muscle activity and can alleviate certain medical conditions. Both sides of the face are treated for a balanced result.

36 services12 patients

Nerve conduction, 11-12 studies 95912

Nerve conduction studies are tests that measure how well your nerves are working. In 11-12 studies, small electrodes are placed on your skin to send and receive electrical signals. These signals show how quickly and effectively your nerves are transmitting signals, helping to identify any nerve damage or dysfunction.

31 services31 patients

Needle measurement of electrical activity in arm or leg muscles, limited study 95885

This procedure, known as an electromyography (EMG), involves placing tiny needles into your arm or leg muscles to measure their electrical activity. It's a limited study, meaning only specific muscles are tested. This helps identify any muscle or nerve dysfunction.

28 services16 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

28 services26 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

23 services23 patients

Measurement of brain wave activity (eeg), awake and asleep 95819

The measurement of brain wave activity, known as an EEG, records the brain's electrical signals. It's performed when you're awake and asleep to monitor your brain's functioning. It helps in diagnosing conditions like epilepsy, sleep disorders, and other neurological issues.

21 services21 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.

15 services11 patients

Measurement of brain wave activity (eeg), awake and drowsy 95816

Measurement of brain wave activity, also known as an EEG, is a non-invasive test that records electrical patterns in your brain. This procedure is done when you're awake and drowsy to understand how your brain functions during different states of consciousness.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Singing River Health System

Acute Care Hospitals · Pascagoula, MS

2/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number250040

Location2809 Denny AvenuePascagoula, MS 39581 · Jackson County

Emergency services Birthing friendly

Singing River Gulfport

Acute Care Hospitals · Gulfport, MS

1/5 CMS rating

OwnershipProprietary

CMS Certification Number250123

Location15200 Community RoadGulfport, MS 39503 · Harrison County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 39564 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

$120.41 typical visit price

range $51.65 – $159.18

Typical copayment $30.10 (range $12.91 – $39.79)

Most-billed visit code 99204

Established Patient

$92.20 typical visit price

range $16.15 – $129.61

Typical copayment $23.05 (range $4.03 – $32.40)

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.

Other Providers at the Same Location NPPES 12

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

MISSISSIPPI EYE ASSOCIATES

Ophthalmology

3631 BIENVILLE BLVD
OCEAN SPRINGS, MS 39564

Jackson County (228) 875-2020

BENJAMIN WALKER APPELO MD

Ophthalmology

3631 BIENVILLE BLVD
OCEAN SPRINGS, MS 39564

Jackson County (228) 875-2020

DR. WILLIAM VAN WURM MD

Pediatrics

3631 BIENVILLE BLVD
OCEAN SPRINGS, MS 39564

Jackson County (228) 818-0585

AUBREY PHILLIPS

Nurse Practitioner (Family)

3631 BIENVILLE BLVD
OCEAN SPRINGS, MS 39564

Jackson County (228) 818-0585

MR. JAMES DAVID SUTTON M.D.

Ophthalmology

3631 BIENVILLE BLVD
OCEAN SPRINGS, MS 39564

Jackson County (228) 875-2020

HEATHER RHODEN, MD, PLLC

Pediatrics

3631 BIENVILLE BLVD, SUITE A
OCEAN SPRINGS, MS 39564

Jackson County (228) 818-0585

VAN WURM MD,PLLC

Pediatrics

3631 BIENVILLE BLVD, SUITE A
OCEAN SPRINGS, MS 39564

Jackson County (228) 818-0585

ERIN PETERSEN MD

Ophthalmology

3631 BIENVILLE BLVD
OCEAN SPRINGS, MS 39564

Jackson County (228) 875-2020

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 Evans's NPI number?

The NPI number for William Evans is 1619913761. It was assigned to this individual provider in the NPPES registry on June 20, 2006.

Where is William Evans located?

William Evans practices at 3631 Bienville Blvd Suite A, Ocean Springs, MS 39564. The listed phone number is (228) 818-9620.

What is William Evans's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is William Evans enrolled in Medicare?

Yes. William Evans 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.

Which organizations bill Medicare for William Evans's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Evans reassigns Medicare benefits to 2 organizations: Singing River Health System (Ocean Springs, MS) and Singing River Gulfport (Gulfport, MS). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Evans's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Evans accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 4 other insurers list William Evans 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 Evans affiliated with any hospitals?

According to CMS data, William Evans is affiliated with Singing River Health System and Singing River Gulfport.

When was this NPI record last updated?

The NPPES record for William Evans was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.