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DR. CASSANDRA MABEL ARMSTEAD-WILLIAMS M.D.
NPI 1295021996
Anesthesiology - Pediatric Anesthesiology in Memphis, TN

Active since June 22, 2011PECOS EnrolledAccepts Medicare Assignment
50 N DUNLAP ST, MEMPHIS, TN 38103(901) 287-6060(091) 287-5102 Get Directions Write a Review

NPPES record last updated: May 1, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 1, 2023, Sep 25, 2022, Aug 27, 2018 and 1 more (4 updates tracked since 2015).

About Dr. Cassandra Mabel Armstead-williams M.d. NPPES

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

DR. CASSANDRA MABEL ARMSTEAD-WILLIAMS M.D. (NPI 1295021996) is an individual pediatric anesthesiology provider in Memphis, Tennessee, licensed in Tennessee (64723) and active in the NPI registry since June 2011. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2010).

NPPES Registry Identity

NPI1295021996
Entity TypeIndividualFemale
Primary Taxonomy207LP3000X
Provider Legal NameDR. CASSANDRA MABEL ARMSTEAD-WILLIAMSCredential: M.D.
Location Address50 N DUNLAP STMemphis, TN 38103-2800
Mailing Address50 N Dunlap StMemphis, TN 38103-2800 · (901) 287-6060 · Fax (091) 287-5102
Phone(901) 287-6060
Fax(091) 287-5102
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateJune 22, 2011
Last NPPES UpdateMay 1, 20234 updates tracked since enumeration
NPPES CertifiedMay 1, 2023
✔ NPI 1295021996 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiology · Pediatric AnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207LP3000X
Licenses✔ Licensed in TN · 64723✔ Licensed in MS · 23994
Definition
An anesthesiologist who has had additional skill and experience in and is primarily concerned with the anesthesia, sedation, and pain management needs of infants and children. A pediatric anesthesiologist generally provides services including the evaluation of complex medical problems in infants and children when surgery is necessary, planning and care for children before and after surgery, pain control, anesthesia and sedation for any procedures out of the operating room such as MRI, CT scan, and radiation therapy.
Also ListedAnesthesiologyTaxonomy 207L00000X · License MD.207894 (LA)
50 N DUNLAP ST, Memphis, TN 38103
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Other Names 1

Other Name (5)Cassie Armstead-williams M.d.

Secondary Practice Locations 2

Location 1University Medical Center, 2000 Canal StNew Orleans, LA 70112 · Phone (504) 702-3000
Location 22500 North State St, UMMC, Department of AnesthesiologyJackson, MS 39216 · Phone (601) 984-5900

Other Identifiers 1

Medicaid04633792MS

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. Cassandra Mabel Armstead-williams 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 ID9032334412
PECOS Enrollment IDI20221214002692
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

2

Medicare enrollment records show Cassandra Armstead-williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Pediatric Anesthesiologists P A
Same address
Anesthesiology
50 N DUNLAP ST
Memphis, TN 38103
  • Reassigned Medicare billing, Tennessee enrollment
  • 50 clinicians in this Medicare group
NPI 1720087802 (901) 572-3060
Ut Lebonheur Pediatric Specialists, Inc.
Same address
Pediatrics
848 ADAMS AVE.
Memphis, TN 38103
  • Reassigned Medicare billing, Tennessee enrollment
  • 582 clinicians in this Medicare group
NPI 1093024101 (901) 287-7337

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 38103 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
$66.01 typical visit price
range $16.72 – $131.41
Typical copayment $16.50 (range $4.18 – $32.85)
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.

REMI T PARKER MD
Student in an Organized Health Care Education/Training Program
50 N DUNLAP ST
MEMPHIS, TN 38103
Shelby County (901) 205-7618
SARAH J JONES C.R.N.A., D.N.P.
Nurse Anesthetist, Certified Registered
50 N DUNLAP ST, 2ND FLOOR CHILDREN'S RESEARCH FOUNDATION TOWER
MEMPHIS, TN 38103
Shelby County (901) 287-6060
DALE A VIOX CRNA
Nurse Anesthetist, Certified Registered
50 N DUNLAP ST
MEMPHIS, TN 38103
Shelby County (901) 287-6060
MEGHAN VOGT BURKLEY M.D.
Anesthesiology (Pediatric Anesthesiology)
50 N DUNLAP ST
MEMPHIS, TN 38103
Shelby County (901) 287-6060
DR. KENNETH MURRAY BUSBY III D.O.
Pediatrics (Pediatric Hematology-Oncology)
50 N DUNLAP ST
MEMPHIS, TN 38103
Shelby County (901) 287-5986
DR. LUIS A BARRANCO MD
Anesthesiology
50 N DUNLAP ST
MEMPHIS, TN 38103
Shelby County (901) 572-3060
DR. WEBB A SMITH PHD
Clinical Exercise Physiologist
50 N DUNLAP ST, CFRI ROOM 308R
MEMPHIS, TN 38103
Shelby County (901) 287-5358
MALLORI CHANNING ROBERTS RD
Dietitian, Registered (Nutrition, Pediatric)
50 N DUNLAP ST
MEMPHIS, TN 38103
Shelby County (901) 287-5948

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 Cassandra Armstead-williams's NPI number?

The NPI number for Cassandra Armstead-williams is 1295021996. It was assigned to this individual provider in the NPPES registry on June 22, 2011. The provider is also known as Cassie Armstead-Williams M.D..

Where is Cassandra Armstead-williams located?

Cassandra Armstead-williams practices at 50 N Dunlap St, Memphis, TN 38103. The listed phone number is (901) 287-6060.

What is Cassandra Armstead-williams's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pediatric Anesthesiology, with taxonomy code 207LP3000X.

Is Cassandra Armstead-williams enrolled in Medicare?

Yes. Cassandra Armstead-williams 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 Cassandra Armstead-williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cassandra Armstead-williams reassigns Medicare benefits to 2 organizations: Pediatric Anesthesiologists P A (Memphis, TN) and Ut Lebonheur Pediatric Specialists, Inc. (Memphis, TN). 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 Cassandra Armstead-williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Cassandra Armstead-williams was last updated on May 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.