Medicare Enrolled
Dr. Shahin Shirzadi, M.D.
Neurology · Houston, TX
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Shirzadi from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Shirzadi
Dr. Shahin Shirzadi is a neurology specialist in Houston, TX, with 21 years of NPI registration. Based on federal Medicare data, Dr. Shirzadi performed 906 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Shirzadi received a total of $25,432 from 79 pharmaceutical and/or device companies across 1340 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Shirzadi is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 21 years of NPI registration
▲ Top 34% volume in TX
$25,432 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗906
Medicare services
Top 34% in TX for neurology
Not available
Unique patients (not deduplicated)
$118
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
328 | $114 | $300 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
169 | $108 | $279 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
116 | $86 | $250 |
| EEG, extended monitoring A test that records electrical activity in the brain while the patient is both awake and asleep. |
82 | $326 | $1,000 |
| Electromyography of arm or leg muscles A test that measures the electrical activity in the muscles of the arm or leg using a needle electrode. It helps evaluate the health of muscles and the nerve cells that control them. |
67 | $73 | $346 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
67 | $56 | $200 |
| Nerve conduction studies, 5-6 tests A series of 5 to 6 tests that measure how well nerves send electrical signals. The procedure evaluates nerve function and helps identify damage or dysfunction. |
31 | $98 | $600 |
| Complex chronic care management, first 60 minutes This service involves clinical staff time directed by a healthcare professional to manage two or more chronic conditions over a calendar month. It covers the first 60 minutes of this coordinated care effort. |
23 | $101 | $196 |
| Additional chronic care management time, 60 minutes This service covers an additional 60 minutes of clinical staff time directed by a healthcare professional for managing two or more chronic conditions, billed per calendar month. |
23 | $54 | $104 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
Industry Payment Transparency
Open Payments through 2024 ↗$25,432
Total received (2018-2024)
Avg $3,633/year across 7 years
Top 14% in TX for neurology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
79
Companies
1,340
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,567
2023
$2,797
2022
$3,463
2021
$3,729
2020
$3,507
2019
$4,550
2018
$3,819
Payments by company (2024)
ABBVIE INC.
$756
Eisai Inc.
$320
UCB, Inc.
$305
Lilly USA, LLC
$221
Neurocrine Biosciences, Inc.
$218
Teva Pharmaceuticals USA, Inc.
$185
TG Therapeutics, Inc.
$172
PFIZER INC.
$150
SK Life Science, Inc.
$134
Neurelis, Inc.
$93
Novartis Pharmaceuticals Corporation
$87
Abbott Laboratories
$86
Otsuka America Pharmaceutical, Inc.
$84
Merz Pharmaceuticals, LLC
$79
Alexion Pharmaceuticals, Inc.
$72
Sumitomo Pharma America, Inc.
$67
ACADIA Pharmaceuticals Inc
$63
ARGENX US, INC.
$58
EMD Serono, Inc.
$58
CATALYST PHARMACEUTICALS, INC.
$52
MDD US Operations, LLC
$39
LivaNova USA, Inc.
$38
Azurity Pharmaceuticals, Inc.
$36
JAZZ PHARMACEUTICALS INC.
$31
Alnylam Pharmaceuticals Inc.
$30
Aucta Pharmaceuticals, Inc.
$24
Supernus Pharmaceuticals, Inc.
$24
Grifols USA, LLC
$22
Genentech USA, Inc.
$21
Acorda Therapeutics, Inc
$21
InSightec,Inc
$18
Top 3 companies account for 38.7% of 2024 payments
All-time payments by company (2018-2024) ›
Teva Pharmaceuticals USA, Inc.
$2,206
UCB, Inc.
$1,701
ACADIA Pharmaceuticals Inc
$1,243
ABBVIE INC.
$1,079
Novartis Pharmaceuticals Corporation
$1,077
US WorldMeds, LLC
$984
AbbVie Inc.
$920
GENZYME CORPORATION
$892
SK Life Science, Inc.
$881
Allergan, Inc.
$867
Lilly USA, LLC
$790
Abbott Laboratories
$741
Alexion Pharmaceuticals, Inc.
$624
Biogen, Inc.
$610
Genentech USA, Inc.
$598
Neurocrine Biosciences, Inc.
$560
Acorda Therapeutics, Inc
$547
Sunovion Pharmaceuticals Inc.
$546
Eisai Inc.
$533
Adamas Pharmaceuticals, Inc.
$532
Amgen Inc.
$449
Allergan Inc.
$372
Corium, LLC
$366
Amneal Pharmaceuticals LLC
$350
PFIZER INC.
$335
EMD Serono, Inc.
$335
Avanir Pharmaceuticals, Inc.
$333
Biohaven Pharmaceutical Holding Company Ltd.
$315
Supernus Pharmaceuticals, Inc.
$303
Kyowa Kirin, Inc.
$285
Grifols USA, LLC
$279
Lundbeck LLC
$266
Boston Scientific Corporation
$257
Biohaven Pharmaceuticals, Inc.
$200
Upsher-Smith Laboratories LLC
$197
TG Therapeutics, Inc.
$172
Medtronic USA, Inc.
$154
Amylyx Pharmaceuticals, Inc.
$153
Promius Pharma LLC
$152
Sumitomo Pharma America, Inc.
$150
E.R. Squibb & Sons, L.L.C.
$118
ARGENX US, INC.
$117
BOSTON SCIENTIFIC CORPORATION
$105
EISAI INC.
$98
Neurelis, Inc.
$93
GE HEALTHCARE
$90
Vertiflex, Inc.
$85
Otsuka America Pharmaceutical, Inc.
$84
ARBOR PHARMACEUTICALS, INC.
$81
Merz Pharmaceuticals, LLC
$79
CSL Behring
$72
Avion Pharmaceuticals
$69
Arbor Pharmaceuticals, Inc.
$59
BANNER LIFE SCIENCES, LLC
$59
Merz North America, Inc.
$59
MDD US Operations, LLC
$59
AQUESTIVE THERAPEUTICS, INC.
$56
CATALYST PHARMACEUTICALS, INC.
$52
Mitsubishi Tanabe Pharma America, Inc.
$51
ASSERTIO THERAPEUTICS, Inc.
$46
Bausch Health US, LLC
$45
Mallinckrodt LLC
$42
LivaNova USA, Inc.
$38
Celgene Corporation
$37
Horizon Therapeutics plc
$37
Medtronic, Inc.
$36
Azurity Pharmaceuticals, Inc.
$36
AstraZeneca Pharmaceuticals LP
$36
Banner Life Sciences, LLC
$33
JAZZ PHARMACEUTICALS INC.
$31
Alnylam Pharmaceuticals Inc.
$30
Impax Laboratories, Inc.
$25
Aucta Pharmaceuticals, Inc.
$24
Zyla Life Sciences
$19
InSightec,Inc
$18
Aziyo Biologics, Inc.
$18
Vertical Pharmaceuticals, LLC
$15
SCILEX PHARMACEUTICALS INC.
$14
MITSUBISHI TANABE PHARMA AMERICA, INC.
$12
Top 3 companies account for 20.3% of all-time payments
Associated products mentioned in payments ›
ACTHAR · ACTIVA · ACTIVA PC · ADLARITY · ADUHELM · AGAMREE · AJOVY · AMPYRA · AMYVID · APOKYN · APTIOM · AUBAGIO · AUSTEDO · AVONEX · Adlarity · Aimovig · Apokyn · Austedo XR · BAFIERTAM · BOTOX · BOTOX THERAPEUTIC · BRILINTA · BRIUMVI · Briviact · COMIRNATY · COPAXONE · Cambia · Cenobamate · DUOPA · Dayvigo · Dhivy · ECM Patch · EMGALITY · EPIDIOLEX · Exablate · FYCOMPA · Fycompa · GENERAL DBS · GENERAL - DBS · GILENYA · GOCOVRI · Gamunex-C · HORIZANT · Hizentra · Horizant · INBRIJA · INFINITY · INGREZZA · Infinity DBS Pulse Generators · KESIMPTA · KISUNLA · KYNMOBI · LEMTRADA · LYRICA · Leqembi · MAYZENT · MIGRANAL · MYOBLOC · Mavenclad · Motpoly XR · NAMZARIC · NORTHERA · NOURIANZ · NUEDEXTA · NUPLAZID · NURTEC ODT · Nayzilam · Neupro · Nourianz · Nuedexta · OCREVUS · ONFI · ONPATTRO · OSMOLEX ER · Ocrevus · Ocrevus Zunovo · Ongentys · Pouch · QUDEXY XR Topiramate Extended Release Capsules · QULIPTA · Qelbree · RADICAVA · RELYVRIO · REXULTI · RYTARY · Radicava · Rebif · SOLIRIS · SPRIX · SYMPAZAN · Soliris · Superion ISS · TECFIDERA · TOSYMRA SUMATRIPTAN NASAL SPRAY · TROKENDI XR · TYSABRI · UBRELVY · ULTOMIRIS · UPLIZNA · VALTOCO · VERCISE · VNS THERAPY SENTIVA MODEL 1000 GENERATOR · VRAYLAR · VYEPTI · VYVGART · VYVGART HYTRULO · Vercise · Vimpat · XCOPRI · XEOMIN · Xadago · Xeomin · ZEMBRACE SYMTOUCH · ZEPOSIA · ZOMIG · ZTLido · Zembrace
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Neurologists in nearby ZIP areas
366
County median income
$73,104
Nearest hospital to ZIP centroid (approximate)
WEST OAKS HOSPITAL
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Shirzadi is a clinical cardiology specialist, with moderate Medicare volume, with 21 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Shirzadi experienced with office visit, established patient, complex (40-54 min)?
Based on Medicare claims data, Dr. Shirzadi performed 328 office visit, established patient, complex (40-54 min) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Shirzadi receive payments from pharmaceutical companies?
Yes. Dr. Shirzadi received a total of $25,432 from 79 companies across 1,340 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Shirzadi's costs compare to other neurologists in Houston?
Dr. Shirzadi's average Medicare payment per service is $118. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Shirzadi) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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