NPI registry status
Active
2026 NPPES data Adolescent Medicine (Internal Medicine) Physician NPI 1558329979 M.D
Verify on CMS → Shahab Ahmad, M.D
Adolescent Medicine (Internal Medicine) Physician in Richardson, 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 375 in Adolescent Medicine (Internal Medicine) Physician, 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
2K
Medicare Part D claims · 174 beneficiaries · Adolescent Medicine (Internal Medicine) Physician avg: 3K
Generic prescribing
86%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$13.61
1 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
Shahab Ahmad, M.D filed 1,983 Medicare Part D claims in 2023 as a Adolescent Medicine (Internal Medicine) Physician in Richardson, Texas, prescribing 86% generic.
- 2K
- Part D claims, 2023
- 86%
- generic prescribing
- $13.61
- 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.
Shahab Ahmad, M.D's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,983 Top 16% higher than 84% 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
◑
Board-eligible specialty (heuristic, not verified)
Shahab Ahmad, M.D practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Shahab Ahmad, M.D?
Quality data not reportedPrimary specialty
Adolescent Medicine (Internal Medicine) Physician
Medicare Part D claims
1,983 39% vs specialty avg
Specialty distribution in Texas
How Adolescent Medicine (Internal Medicine) Physician 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 Adolescent Medicine (Internal Medicine) Physician. 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).
Shahab Ahmad, M.D appears in the CMS NPPES registry as an Adolescent Medicine (Internal Medicine) Physician provider holding M.D credentials at 2100 N.COLLINS BLVD, Richardson, TX, 75080, with a listed phone of (972) 235-2304. NPI 1558329979 was issued on 05/03/2006.
Medicare Part D records for calendar year 2023 show 1,983 prescription claims written by this provider, covering 174 Medicare beneficiaries and totaling roughly $232K in drug spend, split 12% brand-name and 86% generic by claim count.
Adolescent Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 375 enrolled providers across 46 states and an average of 3,242 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 | 1558329979 |
|---|---|
| Specialty | Adolescent Medicine (Internal Medicine) Physician |
| Credentials | M.D |
| Gender | Male |
| NPI Issued | 05/03/2006 |
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 Shahab Ahmad, M.D. Source: openpaymentsdata.cms.gov.
Total received
$14
Largest payer
ABBVIE INC.
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 Shahab Ahmad, M.D. To verify Shahab Ahmad, M.D'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
Shahab Ahmad, M.D - brand share 12.0%
Adolescent Medicine (Internal Medicine) Physician average
12% brand-name claims vs 86% generic, on 1,983 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.
1,983
Total Claims
$232K
Total Drug Cost
174
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,718
- Total Day Supply
- 138,846
- Brand vs Generic
- 12% brand / 86% generic
- Brand Drug Cost
- $198K
- Generic Drug Cost
- $33K
- Antibiotic Claims
- 66
Patient Demographics
- Average Patient Age
- 74.4 years
- Avg HCC Risk Score
- 1.23
- 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 Shahab Ahmad, M.D prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
162 claims
- Metformin Hcl
Metformin Hcl
117 claims
- Amlodipine Besylate
Amlodipine Besylate
115 claims
- Losartan Potassium
Losartan Potassium
81 claims
- Lisinopril
Lisinopril
80 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
71 claims
- Levothyroxine Sodium
Levothyroxine Sodium
65 claims
- Pravastatin Sodium 64
Pravastatin Sodium
64 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 162 |
| Metformin Hcl | 117 |
| Amlodipine Besylate | 115 |
| Losartan Potassium | 81 |
| Lisinopril | 80 |
| Rosuvastatin Calcium | 71 |
| Levothyroxine Sodium | 65 |
| Pravastatin Sodium | 64 |
| Carvedilol | 54 |
| Gabapentin | 49 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Adolescent Medicine (Internal Medicine) Physician in TX →
All providers in Texas →
Compare specialties →
Adolescent Medicine (Internal Medicine) Physician Overview
How Shahab Ahmad, M.D fits within the Adolescent Medicine (Internal Medicine) Physician landscape nationally.
375
Adolescent Medicine (Internal Medicine) Physician Providers in US
46
States with Adolescent Medicine (Internal Medicine) Physician
3,242
Avg Claims per Provider
Shahab Ahmad, M.D's 1,983 claims are below the specialty average of 3,242.
Nearby Adolescent Medicine (Internal Medicine) Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Ahmad.
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 Adolescent Medicine (Internal Medicine) Physician 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.
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Shahab Ahmad, M.D's specialty? ▼
Shahab Ahmad, M.D specializes in Adolescent Medicine (Internal Medicine) Physician and practices in Richardson, Texas. Credentials: M.D.
How much does Shahab Ahmad, M.D prescribe under Medicare Part D? ▼
In 2023, Shahab Ahmad, M.D wrote 1,983 Medicare Part D claims totaling $232K in drug costs for 174 beneficiaries.
Where is Shahab Ahmad, M.D located? ▼
Shahab Ahmad, M.D is located at 2100 N.COLLINS BLVD, Richardson, TX, 75080. Phone: (972) 235-2304.
What is Shahab Ahmad, M.D's NPI number? ▼
Shahab Ahmad, M.D's National Provider Identifier (NPI) is 1558329979, issued on 05/03/2006.
Does Shahab Ahmad, M.D prescribe more brand-name or generic drugs? ▼
Shahab Ahmad, M.D's prescribing is 12% brand-name and 86% generic drugs by claim count, with $198K in brand drug costs.
How many Adolescent Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 375 Adolescent Medicine (Internal Medicine) Physician providers across 46 states in the US. The average Adolescent Medicine (Internal Medicine) Physician provider writes 3,242 Medicare Part D claims per year.
What drugs does Shahab Ahmad, M.D prescribe most often? ▼
Based on 2023 Medicare Part D data, Shahab Ahmad, M.D's most frequently prescribed drugs include Atorvastatin Calcium, Metformin Hcl, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Shahab Ahmad, M.D accept Medicare? ▼
Shahab Ahmad, M.D appears in CMS Medicare data with 1,983 Part D claims and 174 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Shahab Ahmad, M.D's credentials? ▼
Shahab Ahmad, M.D's NPI is 1558329979 with credentials M.D. 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.