WILLIAM HAYWOOD MAYS III M.D.
NPI 1265690580
Psychiatry & Neurology - Neurology in Memphis, TN

Q: What is William Mays's NPI number?

The NPI number for William Mays is 1265690580. It was assigned to this individual provider in the NPPES registry on May 23, 2008.

Q: What is William Mays'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 Mays was last updated on June 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since May 23, 2008PECOS Enrolled

1265 UNION AVE, MEMPHIS, TN 38104(901) 516-2312(901) 516-7395 Get Directions Write a Review

NPPES record last updated: June 27, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 27, 2021, Apr 13, 2020, Jan 15, 2020 and 2 more (5 updates tracked since 2015).

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About William Haywood Mays Iii M.d. NPPES

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

WILLIAM HAYWOOD MAYS III M.D. (NPI 1265690580) is an individual neurology provider in Memphis, Tennessee, licensed in Tennessee (57627) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1265690580

Entity TypeIndividualMale

Primary Taxonomy2084N0400X

Provider Legal NameWILLIAM HAYWOOD MAYS IIICredential: M.D.

Location Address1265 UNION AVEMemphis, TN 38104-3415

Mailing Address4174 Minden RdMemphis, TN 38117-1606 · (901) 647-5394

Phone(901) 516-2312

Fax(901) 516-7395

Sole ProprietorNo

Enumeration DateMay 23, 2008

Last NPPES UpdateJune 27, 20215 updates tracked since enumeration

NPPES CertifiedJune 27, 2021

✔ NPI 1265690580 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0400X

License✔ Licensed in TN · 57627

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 ListedEmergency MedicineTaxonomy 207P00000X · License 57627 (TN), E-12952 (AR)

Also ListedSurgeryTaxonomy 208600000X · License 0101251924 (VA)

1265 UNION AVE, Memphis, TN 38104

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BlueCross BlueShield of Tennessee, Cigna Healthcare, Oscar Health Plan, Inc. 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 Haywood Mays Iii M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

Lauderdale Community Hospital LLC

50 mi

Critical Access

340 ASBURY AVE
Ripley, TN 38063

Reassigned Medicare billing, Tennessee enrollment
33 clinicians in this Medicare group

NPI 1376175687 (731) 221-2200

T M Carr MD PC

72 mi

Emergency Medicine

400 E TICKLE ST
Dyersburg, TN 38024

Reassigned Medicare billing, Tennessee enrollment
256 clinicians in this Medicare group

NPI 1992706097 (731) 285-2410

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.

Emergency department visit with high level of medical decision making 99285

An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.

27 services27 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

21 services21 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.

16 services12 patients

Emergency department visit with moderate level of medical decision making 99284

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 38104 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

$121.80 typical visit price

range $52.64 – $160.89

Typical copayment $30.45 (range $13.16 – $40.22)

Most-billed visit code 99204

Established Patient

$93.60 typical visit price

range $16.72 – $131.41

Typical copayment $23.40 (range $4.18 – $32.85)

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 20

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

MICHAEL FISHER CRNA

Nurse Anesthetist, Certified Registered