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DR. WILLIAM PATRICK ZELEZNAK MD
NPI 1184111759
Anesthesiology in Fort Worth, TX

Active since April 18, 2018PECOS EnrolledAccepts Medicare Assignment
900 8TH AVE, FORT WORTH, TX 76104(817) 336-2100 Get Directions Write a Review

NPPES record last updated: March 11, 2025. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Mar 11, 2025, Apr 18, 2018 (2 updates tracked since 2018).

About Dr. William Patrick Zeleznak Md NPPES

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

DR. WILLIAM PATRICK ZELEZNAK MD (NPI 1184111759) is an individual anesthesiology provider in Fort Worth, Texas, licensed in Texas (V5857) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with Medical City Fort Worth, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1184111759
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. WILLIAM PATRICK ZELEZNAKCredential: MD
Location Address900 8TH AVEFort Worth, TX 76104-3902
Mailing Address900 8th AveFt Worth, TX 76104-3902
Phone(817) 336-2100
Sole ProprietorYes
Medical School CMSOtherGraduated 2018
Enumeration DateApril 18, 2018
Last NPPES UpdateMarch 11, 20252 updates tracked since enumeration
NPPES CertifiedMarch 11, 2025
✔ NPI 1184111759 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in TX · V5857
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
900 8TH AVE, Fort Worth, TX 76104
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.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

Dr. William Patrick Zeleznak 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 ID244612281
PECOS Enrollment IDI20250402002825
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.

Medical City Fort Worth

Acute Care Hospitals · Fort Worth, TX
2/5 CMS rating
OwnershipProprietary
CMS Certification Number450672
Location900 Eighth AvenueFort Worth, TX 76104 · Tarrant County
Emergency services

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.

RANDY NGUYEN DO
Internal Medicine
900 8TH AVE
FORT WORTH, TX 76104
Tarrant County (817) 347-1140
JEREMY DEMITCHELL FNP-C
Nurse Practitioner (Family)
900 8TH AVE
FORT WORTH, TX 76104
Tarrant County (817) 336-2100
ABIGAIL LEONARDO ABBAS DO
Student in an Organized Health Care Education/Training Program
900 8TH AVE
FORT WORTH, TX 76104
Tarrant County (817) 347-1140
DAVID DANIEL TOLEDO BARRIOS DO
Student in an Organized Health Care Education/Training Program
900 8TH AVE
FORT WORTH, TX 76104
Tarrant County (817) 347-1140
NGOZI LYNDA UMEZURIKE RN BSN
Nurse Practitioner (Adult Health)
900 8TH AVE
FORT WORTH, TX 76104
Tarrant County (817) 834-8500
CAMILLA CANTUSIO MONTEIRO D.O.
Hospitalist
900 8TH AVE
FORT WORTH, TX 76104
Tarrant County (817) 347-5887
HEMA PANDYA BOHRA D.O.
Internal Medicine
900 8TH AVE
FORT WORTH, TX 76104
Tarrant County (817) 877-5292
TANNER LEN CLIMER
Nurse Anesthetist, Certified Registered
900 8TH AVE
FORT WORTH, TX 76104
Tarrant County (817) 336-2100

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 Zeleznak's NPI number?

The NPI number for William Zeleznak is 1184111759. It was assigned to this individual provider in the NPPES registry on April 18, 2018.

Where is William Zeleznak located?

William Zeleznak practices at 900 8th Ave, Fort Worth, TX 76104. The listed phone number is (817) 336-2100.

What is William Zeleznak's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is William Zeleznak enrolled in Medicare?

Yes. William Zeleznak 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 Zeleznak accept?

Health plans from Blue Cross and Blue Shield of Texas list William Zeleznak 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 Zeleznak affiliated with any hospitals?

According to CMS data, William Zeleznak is affiliated with Medical City Fort Worth.

When was this NPI record last updated?

The NPPES record for William Zeleznak was last updated on March 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.