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ALLIE MARLER WILLIAMS MD
NPI 1699353656
Psychiatry & Neurology - Psychiatry in New Orleans, LA

Active since March 31, 2021PECOS EnrolledAccepts Medicare Assignment
2021 PERDIDO ST OFC 6240, NEW ORLEANS, LA 70112(504) 568-7912 Get Directions Write a Review

NPPES record last updated: November 12, 2025. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Nov 12, 2025, May 21, 2025, Mar 31, 2021 (3 updates tracked since 2021).

About Allie Marler Williams Md NPPES

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

ALLIE MARLER WILLIAMS MD (NPI 1699353656) is an individual psychiatry provider in New Orleans, Louisiana, licensed in Louisiana (336549) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS, is affiliated with Ochsner Lafayette General Medical Center, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1699353656
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameALLIE MARLER WILLIAMSCredential: MD
Location Address2021 PERDIDO ST OFC 6240New Orleans, LA 70112-1352
Mailing Address2021 Perdido St Ofc 6240New Orleans, LA 70112-1352
Phone(504) 568-7912
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateMarch 31, 2021
Last NPPES UpdateNovember 12, 20253 updates tracked since enumeration
NPPES CertifiedNovember 12, 2025
✔ NPI 1699353656 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in LA · 336549
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
2021 PERDIDO ST OFC 6240, New Orleans, LA 70112
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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

Allie Marler Williams 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 ID8729488416
PECOS Enrollment IDI20251023002436
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.

Ochsner Lafayette General Medical Center

Acute Care Hospitals · Lafayette, LA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number190002
Location1214 Coolidge AvenueLafayette, LA 70503 · Lafayette County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 70112 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
$170.30 typical visit price
range $55.50 – $170.30
Typical copayment $42.57 (range $13.87 – $42.57)
Most-billed visit code 99205
Established Patient
$69.44 typical visit price
range $17.42 – $138.03
Typical copayment $17.36 (range $4.35 – $34.50)
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.

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 Allie Williams's NPI number?

The NPI number for Allie Williams is 1699353656. It was assigned to this individual provider in the NPPES registry on March 31, 2021.

Where is Allie Williams located?

Allie Williams practices at 2021 Perdido St Ofc 6240, New Orleans, LA 70112. The listed phone number is (504) 568-7912.

What is Allie Williams's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Allie Williams enrolled in Medicare?

Yes. Allie 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.

Is Allie Williams affiliated with any hospitals?

According to CMS data, Allie Williams is affiliated with Ochsner Lafayette General Medical Center.

When was this NPI record last updated?

The NPPES record for Allie Williams was last updated on November 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.