Dr. Mario A. Fierro, MD
- Part D claims, 2024
- 55
- Publications
- 1
- Industry payments
- $401
- Affiliated sites
- 1
- Medical groups
- 2
- Practice address
- 8431 Fredericksburg Rd, San Antonio, TX 78229
- Practice phone
- Call (210) 450-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UT Health San Antonio
San Antonio, Texas
Find Dr. Fierro's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mario A. Fierro is a developmental - behavioral pediatrics physician in San Antonio, Texas
Dr. Fierro practices at UT Health San Antonio in San Antonio, Texas.
Dr. Fierro's NPI, 1033172374, was assigned on April 8, 2006. Dr. Fierro graduated from Harvard Medical School in 1997. Dr. Fierro holds Texas license L5734.
- NPI
- 1033172374NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395923619
- NPI enumeration date
- April 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (210) 450-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mario A. Fierro practices at UT Health San Antonio in San Antonio, Texas
Dr. Fierro's primary practice is UT Health San Antonio, at 8431 Fredericksburg Rd, San Antonio, TX 78229 in Bexar County. The practice phone is (210) 450-9000.
- UT Health San Antonio8431 Fredericksburg Rd, San Antonio, TX 78229 · Bexar CountyPhone(210) 450-9000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mario A. Fierro is affiliated with 2 sites of care and 2 medical groups
Dr. Fierro's primary practice is UT Health San Antonio in San Antonio, Texas. The medical group on file is UT Health Physicians. Dmand AI also links Dr. Fierro to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mario A. Fierro's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fierro practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UT Health San Antonio | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mario A. Fierro is one of 55 developmental - behavioral pediatrics physicians in Texas
Developmental - behavioral pediatrics is Dr. Fierro's primary specialty in the NPI Registry, under taxonomy code 2080P0006X. Dr. Fierro is board certified in developmental-behavioral pediatrics by the American Board of Pediatrics. Dmand AI has Dr. Fierro's licenses on file in 4 states: Texas, Washington, Colorado and Connecticut.
Specialties and state licenses
- Developmental - behavioral pediatrics, TexasPrimary
- Washington license
- Colorado license
- Connecticut license
Developmental - behavioral pediatrics physicians near Dr. Fierro
Counts of developmental - behavioral pediatrics physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mario A. Fierro's patients have a median age of 8
Across all payers, Dmand AI patient panel data puts Dr. Fierro's median patient age at 8, with 26% women.
Dr. Fierro's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 8
Patient panel by sex, all payers
- Women26%
- Men74%
Source: Dmand AI Patient Panel Data
Dr. Mario A. Fierro wrote 55 Medicare Part D claims in 2024
In 2024, Dr. Fierro wrote 55 Medicare Part D claims. 87% of them were for generic drugs. CMS names the drug for 24 of them, across 2 drugs with 11 or more claims each, at $132 in total drug cost. In 2022, CMS named 26 claims across 2 drugs.
Dr. Fierro's Part D claims by kind of drug, 2024
- Generic48 claims87%
- Brand-name and other7 claims13%
Dr. Fierro's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 262024: 248%
Drugs named by CMS: 2 in 2024, 2 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Mario A. Fierro takes part in Medicare
Dr. Fierro accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mario A. Fierro has 1 publication on record
Dmand AI links 1 paper to Dr. Fierro in 2017. Dr. Fierro's most frequent co-authors are Alexander Benjamin Kenton, MD and Frank Xavier Placencia, MD.
Dr. Fierro's most frequent co-authors
Recent publications by Dr. Fierro
See who Dr. Fierro researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fierro works with, so you can find a warm path to the right developmental - behavioral pediatrics physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mario A. Fierro received $401 in industry payments from 2016 to 2023
CMS Open Payments shows 18 general payments to Dr. Fierro from 7 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Tris Pharma Inc paid the most, $152.
General payments to Dr. Fierro by program year, 2016 to 2023
Companies that paid Dr. Fierro the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mario A. Fierro has 1 award and honors on record
Dmand AI lists 1 award for Dr. Fierro.
Awards and honors for Dr. Fierro
- Undated
- AAP Fellow
Source: Dmand AI Professional Profile Data
Dr. Mario A. Fierro graduated from Harvard Medical School
Dr. Fierro graduated from Harvard Medical School in 1997. Dr. Fierro is a member of AAP.
- Medical school
- Board certified in developmental-behavioral pediatrics
Source: Dmand AI Professional Profile Data
Dr. Mario A. Fierro accepts plans from 18 insurance carriers
Dr. Fierro is in network with 18 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Cigna
- Alliant Health Plans
- Aspirus Health Plan
- HCSC
- +10 more carriersWith a free account
Plan types Dr. Fierro accepts, by number of carriers
- HMO12
- PPO9
- POS6
- Medicare5
- EPO4
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Mario A. Fierro's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mario A. Fierro
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mario A. Fierro's NPI number?
Dr. Mario A. Fierro's NPI number is 1033172374. It was assigned on April 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mario A. Fierro?
Dr. Mario A. Fierro is a developmental - behavioral pediatrics physician in San Antonio, Texas. The primary specialty in the NPI Registry is Developmental - Behavioral Pediatrics Physician (taxonomy code 2080P0006X).
Where does Dr. Mario A. Fierro practice?
Dr. Fierro practices at 8431 Fredericksburg Rd, San Antonio, TX 78229. Dr. Fierro's primary practice is UT Health San Antonio in San Antonio, Texas. Dmand AI also links Dr. Fierro to 1 group practice or clinic and 1 medical group.
What is Dr. Mario A. Fierro's office phone number?
The practice phone on file for Dr. Fierro is (210) 450-9000.
What is Dr. Mario A. Fierro's medical license number?
Dr. Fierro holds Texas license L5734, one of the licenses on file in 4 states.
Which states has Dr. Mario A. Fierro been licensed in?
Dmand AI has state licenses on file for Dr. Fierro in Texas (2003 to 2026), Washington (2002 to 2004), Colorado (2000 to 2003) and Connecticut (2002 to 2003).
What medical group is Dr. Mario A. Fierro part of?
Dr. Fierro is linked to UT Health Physicians. Dmand AI links Dr. Fierro to 1 more medical group.
Does Dr. Mario A. Fierro accept Medicare?
Yes. CMS lists Dr. Fierro as accepting Medicare assignment.
Is Dr. Mario A. Fierro board certified?
Yes. Dr. Fierro is board certified in developmental-behavioral pediatrics by the American Board of Pediatrics.
Where did Dr. Mario A. Fierro go to medical school?
Dr. Fierro graduated from Harvard Medical School in 1997.
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What drugs does Dr. Mario A. Fierro prescribe most?
In 2024 Medicare Part D data, Dr. Fierro's most prescribed drugs by claims were Metformin HCl and Pravastatin Sodium.
Has Dr. Mario A. Fierro received payments from drug or device companies?
CMS Open Payments shows $401 in general payments to Dr. Fierro from 7 companies from 2016 to 2023. The largest total came from Tris Pharma Inc.
How long has Dr. Mario A. Fierro been practicing?
Dr. Fierro graduated from medical school in 1997, 29 years ago.
Does Dr. Mario A. Fierro do research?
Dmand AI links 1 publication to Dr. Fierro.
Who does Dr. Mario A. Fierro publish with?
Dr. Fierro's most frequent co-authors are Alexander Benjamin Kenton, MD (1 shared paper) and Frank Xavier Placencia, MD (1 shared paper).
What insurance does Dr. Mario A. Fierro accept?
Dr. Fierro is in network with 18 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.
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