NPI registry status
Active
2026 NPPES data Specialist NPI 1598745259 MD
Verify on CMS → Humberto Maldonado, MD
Specialist in Austin, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 69,658 in Specialist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
6K
Medicare Part D claims · 443 beneficiaries · Specialist avg: 1K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$756.54
45 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Humberto Maldonado, MD filed 5,560 Medicare Part D claims in 2023 as a Specialist in Austin, Texas, prescribing 86% generic.
- 6K
- Part D claims, 2023
- 86%
- generic prescribing
- $756.54
- industry payments (Sunshine Act)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Humberto Maldonado, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
5,560 Top 5% higher than 95% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Humberto Maldonado, MD?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
5,560 277% vs specialty avg
Specialty distribution in Texas
How Specialist compares to other specialties among Texas providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Specialist. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Humberto Maldonado, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 1004 W 32ND ST STE 400, Austin, TX, 78705, with a listed phone of (512) 454-5171. NPI 1598745259 was issued on 01/19/2006.
Medicare Part D records for calendar year 2023 show 5,560 prescription claims written by this provider, covering 443 Medicare beneficiaries and totaling roughly $618K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 0.4%.
Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1598745259 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 01/19/2006 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Humberto Maldonado, MD. Source: openpaymentsdata.cms.gov.
Total received
$757
Largest payer
GlaxoSmithKline, LLC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Texas TMB 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 - they are NOT specific to Humberto Maldonado, MD. To verify Humberto Maldonado, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Humberto Maldonado, MD - brand share 14.0%
Specialist average
14% brand-name claims vs 86% generic, on 5,560 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
5,560
Total Claims
$618K
Total Drug Cost
443
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 13,086
- Total Day Supply
- 385,513
- Brand vs Generic
- 14% brand / 86% generic
- Brand Drug Cost
- $510K
- Generic Drug Cost
- $107K
- Opioid Claims
- 25 (0.4% rate)
- Antibiotic Claims
- 82
Patient Demographics
- Average Patient Age
- 76.0 years
- Avg HCC Risk Score
- 0.93
- Gender Split
- 48% female / 52% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Humberto Maldonado, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Rosuvastatin Calcium
Rosuvastatin Calcium
365 claims
- Atorvastatin Calcium
Atorvastatin Calcium
358 claims
- Levothyroxine Sodium
Levothyroxine Sodium
271 claims
- Amlodipine Besylate
Amlodipine Besylate
245 claims
- Losartan Potassium
Losartan Potassium
234 claims
- Pravastatin Sodium
Pravastatin Sodium
158 claims
- Ezetimibe
Ezetimibe
151 claims
- Metformin Hcl Er 136
Metformin Hcl Er
136 claims
| Drug | Claims |
|---|---|
| Rosuvastatin Calcium | 365 |
| Atorvastatin Calcium | 358 |
| Levothyroxine Sodium | 271 |
| Amlodipine Besylate | 245 |
| Losartan Potassium | 234 |
| Pravastatin Sodium | 158 |
| Ezetimibe | 151 |
| Metformin Hcl Er Metformin Hcl | 136 |
| Simvastatin | 134 |
| Lisinopril | 113 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Humberto Maldonado, MD fits within the Specialist landscape nationally.
69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Humberto Maldonado, MD's 5,560 claims are above the specialty average of 1,474.
Nearby Specialist Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Maldonado.
Beverly Abbott
Longview, TX
Dr. Magdy Abdelsayed
M.D.
Baytown, TX
Dr. Robin Abels
OTR
Carrollton, TX
Dr. Amr Abouleish
M.D.
Galveston, TX
Dr. Paul Abrell
ATC, L
El Paso, TX
Compare Specialist nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Texas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Specialist peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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How to Find a Doctor
Step-by-step guide to choosing a provider
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
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Frequently Asked Questions
What is Humberto Maldonado, MD's specialty? ▼
Humberto Maldonado, MD specializes in Specialist and practices in Austin, Texas. Credentials: MD.
How much does Humberto Maldonado, MD prescribe under Medicare Part D? ▼
In 2023, Humberto Maldonado, MD wrote 5,560 Medicare Part D claims totaling $618K in drug costs for 443 beneficiaries.
Where is Humberto Maldonado, MD located? ▼
Humberto Maldonado, MD is located at 1004 W 32ND ST STE 400, Austin, TX, 78705. Phone: (512) 454-5171.
What is Humberto Maldonado, MD's NPI number? ▼
Humberto Maldonado, MD's National Provider Identifier (NPI) is 1598745259, issued on 01/19/2006.
Does Humberto Maldonado, MD prescribe more brand-name or generic drugs? ▼
Humberto Maldonado, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $510K in brand drug costs.
Does Humberto Maldonado, MD prescribe opioids? ▼
Yes, Humberto Maldonado, MD had 25 opioid claims in 2023 with an opioid prescribing rate of 0.4%.
How many Specialist providers are there in the US? ▼
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Humberto Maldonado, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Humberto Maldonado, MD's most frequently prescribed drugs include Rosuvastatin Calcium, Atorvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Humberto Maldonado, MD accept Medicare? ▼
Humberto Maldonado, MD appears in CMS Medicare data with 5,560 Part D claims and 443 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Humberto Maldonado, MD's credentials? ▼
Humberto Maldonado, MD's NPI is 1598745259 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.