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DR. MARIO A FIERRO MD
NPI 1033172374
Pediatrics - Developmental - Behavioral Pediatrics in San Antonio, TX

Active since April 08, 2006PECOS EnrolledAccepts Medicare Assignment
10350 BANDERA RD STE 140, SAN ANTONIO, TX 78250(210) 450-7334(210) 450-2124 Get Directions Write a Review

NPPES record last updated: March 22, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 22, 2023, Jan 13, 2023, Jan 3, 2023 and 1 more (4 updates tracked since 2021).

About Dr. Mario A Fierro Md NPPES

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

DR. MARIO A FIERRO MD (NPI 1033172374) is an individual developmental - behavioral pediatrics provider in San Antonio, Texas, licensed in Texas (L5734) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (1997).

NPPES Registry Identity

NPI1033172374
Entity TypeIndividualMale
Primary Taxonomy2080P0006X
Provider Legal NameDR. MARIO A FIERROCredential: MD
Location Address10350 BANDERA RD STE 140San Antonio, TX 78250-5616
Mailing Address10350 Bandera Rd Ste 140San Antonio, TX 78250-5616 · (210) 450-7334 · Fax (210) 450-2124
Phone(210) 450-7334
Fax(210) 450-2124
Sole ProprietorNo
Medical School CMSHarvard Medical SchoolGraduated 1997
Enumeration DateApril 8, 2006
Last NPPES UpdateMarch 22, 20234 updates tracked since enumeration
NPPES CertifiedMarch 22, 2023
✔ NPI 1033172374 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Developmental - Behavioral PediatricsAllopathic & Osteopathic Physicians
Taxonomy Code2080P0006X
License✔ Licensed in TX · L5734
Definition
A developmental-behavioral specialist is a pediatrician with special training and experience who aims to foster understanding and promotion of optimal development of children and families through research, education, clinical care and advocacy efforts. This physician assists in the prevention, diagnosis, and management of developmental difficulties and problematic behaviors in children and in the family dysfunctions that compromise children's development.
Also ListedPediatricsTaxonomy 208000000X · License L5734 (TX)
10350 BANDERA RD STE 140, San Antonio, TX 78250
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Other Identifiers 1

Medicaid157726401TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Cigna Healthcare, Imperial Insurance Companies, 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 and accepts Medicare assignment

Dr. Mario A Fierro 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 ID5395923619
PECOS Enrollment IDI20110708000469
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 Mario Fierro reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The University Of Texas Health Science Center At San Antonio
4.6 mi
General Acute Care Hospital
8311 EWING HALSELL DR
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 2,397 clinicians in this Medicare group
NPI 1326829904 (210) 562-8000
Magella Medical Associates Billing, Inc.
87 mi
Neonatal-Perinatal Medicine
2400 ROUND ROCK AVE
Round Rock, TX 78681
  • Reassigned Medicare billing, Texas enrollment
  • 432 clinicians in this Medicare group
NPI 1083631071 (512) 341-1000

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

Other Providers at the Same Location NPPES 5

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

REBEKAH MOORE FNP-C
Nurse Practitioner (Family)
10350 BANDERA RD STE 140
SAN ANTONIO, TX 78250
Bexar County (210) 450-6530
DR. KENYA SHORT M.D.
Family Medicine
10350 BANDERA RD STE 140
SAN ANTONIO, TX 78250
Bexar County (210) 450-6540
GEORGE T LE MD
Family Medicine
10350 BANDERA RD STE 140
SAN ANTONIO, TX 78250
Bexar County (210) 450-6530
ABIGAIL SEVIGNY
Nurse Practitioner (Pediatrics)
10350 BANDERA RD STE 140
SAN ANTONIO, TX 78250
Bexar County (210) 450-7334
BIJU MATHEW FNP
Nurse Practitioner (Family)
10350 BANDERA RD STE 140
SAN ANTONIO, TX 78250
Bexar County (210) 450-6530

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 Mario Fierro's NPI number?

The NPI number for Mario Fierro is 1033172374. It was assigned to this individual provider in the NPPES registry on April 8, 2006.

Where is Mario Fierro located?

Mario Fierro practices at 10350 Bandera Rd Ste 140, San Antonio, TX 78250. The listed phone number is (210) 450-7334.

What is Mario Fierro's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Developmental - Behavioral Pediatrics, with taxonomy code 2080P0006X.

Is Mario Fierro enrolled in Medicare?

Yes. Mario Fierro 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 Mario Fierro's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mario Fierro reassigns Medicare benefits to 2 organizations: The University Of Texas Health Science Center At San Antonio (San Antonio, TX) and Magella Medical Associates Billing, Inc. (Round Rock, TX). 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 Mario Fierro's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mario Fierro accept?

Health plans from Blue Cross and Blue Shield of Texas, Cigna Healthcare, Imperial Insurance Companies, Inc., Moda Health Plan, Inc. and Oscar Health and 1 other insurer list Mario Fierro 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.

When was this NPI record last updated?

The NPPES record for Mario Fierro was last updated on March 22, 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.