Medicare Enrolled
Dr. Christina Diaz, MD
Neurology · St Petersburg, FL
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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. Diaz 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. Diaz
Dr. Christina Diaz is a neurology specialist in St Petersburg, FL, with 21 years of NPI registration. Based on federal Medicare data, Dr. Diaz performed 11,800 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Diaz received a total of $37,000 from 78 pharmaceutical and/or device companies across 1111 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. Diaz 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 10% volume in FL
$37,000 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗11,800
Medicare services
Top 10% in FL for neurology
Not available
Unique patients (not deduplicated)
$16
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 |
|---|---|---|---|
| Botox injection, per unit An injection of onabotulinumtoxinA, a medication used to temporarily relax muscles or reduce gland activity. The dose is measured in units, with this code representing a single unit administered. |
10,400 | $5 | $8 |
| 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. |
408 | $85 | $200 |
| 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. |
214 | $134 | $292 |
| Additional 30 minutes of psychological or neuropsychological testing This code represents an additional 30-minute increment for administering psychological or neuropsychological tests. It is used to bill for time beyond the initial testing period. |
191 | $30 | $85 |
| Additional hour of neuropsychological test evaluation This code covers the evaluation of neuropsychological testing for each additional hour beyond the initial service. It represents the time spent analyzing and interpreting test results. |
152 | $77 | $202 |
| New patient office visit, complex (60-74 min) | 139 | $163 | $412 |
| EEG, extended monitoring A test that records electrical activity in the brain while the patient is both awake and asleep. |
57 | $323 | $800 |
| Bilateral facial and neck nerve muscle paralysis injection Injection of a chemical agent to paralyze muscles in the face and neck on both sides. |
53 | $125 | $229 |
| Neurobehavioral status exam, first hour A clinical assessment of neurobehavioral status lasting one hour. This evaluation examines mental and behavioral functions. |
41 | $71 | $200 |
| Neuropsychological test evaluation, first hour A professional assessment of cognitive and behavioral functioning using standardized tests. This service covers the initial hour of the evaluation process. |
41 | $100 | $266 |
| 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. |
38 | $75 | $179 |
| Psychological or neuropsychological test, first 30 minutes Administration of psychological or neuropsychological testing for the first 30 minutes. |
34 | $33 | $100 |
| Nerve conduction studies, 7-8 tests A series of 7 to 8 nerve conduction tests to evaluate how well nerves are sending signals to muscles. |
18 | $132 | $330 |
| Prolonged office E/M service, first 15 minutes This code is used for additional time spent by a physician beyond the maximum required time of a primary office or outpatient evaluation and management service. It is billed in 15-minute increments based on total time spent on the date of the primary service. |
14 | $25 | $70 |
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 ↗$37,000
Total received (2018-2024)
Avg $5,286/year across 7 years
Top 10% in FL for neurology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
78
Companies
1,111
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
$3,820
2023
$3,697
2022
$3,791
2021
$3,717
2020
$5,486
2019
$3,477
2018
$13,012
Payments by company (2024)
ABBVIE INC.
$355
PFIZER INC.
$340
Biogen, Inc.
$304
Alexion Pharmaceuticals, Inc.
$273
Lilly USA, LLC
$260
UCB, Inc.
$213
Novartis Pharmaceuticals Corporation
$183
Otsuka America Pharmaceutical, Inc.
$160
Lundbeck LLC
$158
Azurity Pharmaceuticals, Inc.
$129
GE HEALTHCARE
$127
Takeda Pharmaceuticals U.S.A., Inc.
$118
SCILEX PHARMACEUTICALS INC.
$116
Neurocrine Biosciences, Inc.
$111
Kyowa Kirin, Inc.
$106
MITSUBISHI TANABE PHARMA AMERICA, INC.
$105
Celgene Corporation
$102
Merz Pharmaceuticals, LLC
$93
ARGENX US, INC.
$87
Amgen Inc.
$75
Eisai Inc.
$69
Vanda Pharmaceuticals Inc.
$67
EMD Serono, Inc.
$58
Sumitomo Pharma America, Inc.
$46
ACADIA Pharmaceuticals Inc
$45
Amneal Pharmaceuticals LLC
$37
SK Life Science, Inc.
$33
Acorda Therapeutics, Inc
$29
CATALYST PHARMACEUTICALS, INC.
$22
Top 3 companies account for 26.1% of 2024 payments
All-time payments by company (2018-2024) ›
Actelion Pharmaceuticals, Ltd
$8,950
Allergan, Inc.
$6,005
Teva Pharmaceuticals USA, Inc.
$2,132
Biogen, Inc.
$1,308
AbbVie Inc.
$1,240
UCB, Inc.
$1,190
Novartis Pharmaceuticals Corporation
$1,137
GENZYME CORPORATION
$943
Lilly USA, LLC
$805
Amgen Inc.
$723
ABBVIE INC.
$662
ACADIA Pharmaceuticals Inc
$644
EMD Serono, Inc.
$599
PFIZER INC.
$582
Alexion Pharmaceuticals, Inc.
$556
Biohaven Pharmaceuticals, Inc.
$553
Lundbeck LLC
$541
Allergan Inc.
$540
Acorda Therapeutics, Inc
$466
Takeda Pharmaceuticals U.S.A., Inc.
$464
Neurocrine Biosciences, Inc.
$417
Adamas Pharmaceuticals, Inc.
$385
Otsuka America Pharmaceutical, Inc.
$383
ARGENX US, INC.
$373
Kyowa Kirin, Inc.
$284
Avanir Pharmaceuticals, Inc.
$274
Supernus Pharmaceuticals, Inc.
$270
Celgene Corporation
$247
Janssen Pharmaceuticals, Inc
$234
GE HEALTHCARE
$201
Sunovion Pharmaceuticals Inc.
$186
Sumitomo Pharma America, Inc.
$163
Amneal Pharmaceuticals LLC
$161
ARBOR PHARMACEUTICALS, INC.
$158
Biohaven Pharmaceutical Holding Company Ltd.
$155
Bayer HealthCare Pharmaceuticals Inc.
$154
Horizon Therapeutics plc
$154
Genentech USA, Inc.
$153
MDD US Operations, LLC
$151
Azurity Pharmaceuticals, Inc.
$150
US WorldMeds, LLC
$146
MITSUBISHI TANABE PHARMA AMERICA, INC.
$139
Aries Pharmaceuticals, Inc.
$137
GE HealthCare
$126
SCILEX PHARMACEUTICALS INC.
$116
Merz North America, Inc.
$112
Eisai Inc.
$103
BANNER LIFE SCIENCES, LLC
$97
Merz Pharmaceuticals, LLC
$93
Corium, LLC
$84
CATALYST PHARMACEUTICALS, INC.
$79
GE Healthcare
$76
UPSHER-SMITH LABORATORIES LLC
$73
Banner Life Sciences, LLC
$70
Arbor Pharmaceuticals, Inc.
$70
Vanda Pharmaceuticals Inc.
$67
Mitsubishi Tanabe Pharma America, Inc.
$65
SK Life Science, Inc.
$64
Upsher-Smith Laboratories LLC
$64
AbbVie, Inc.
$54
Bausch Health US, LLC
$49
SANOFI-AVENTIS U.S. LLC
$45
Zyla Life Sciences
$44
CSL Behring
$42
TG THERAPEUTICS, INC.
$38
Avion Pharmaceuticals
$30
Collegium Pharmaceutical, Inc.
$28
Grifols USA, LLC
$26
Catalyst Pharmaceuticals, Inc.
$23
Assertio Therapeutics, Inc.
$21
GRT US Holding, Inc.
$19
MERZ NORTH AMERICA, INC.
$18
Scilex Pharmaceuticals Inc.
$17
Abbott Laboratories
$17
Mallinckrodt Enterprises LLC
$16
Vertical Pharmaceuticals, LLC
$15
Medtronic USA, Inc.
$14
Impax Laboratories, Inc.
$11
Top 3 companies account for 46.2% of all-time payments
Associated products mentioned in payments ›
ACTHAR · ADUHELM · AIMOVIG · AJOVY · AMPYRA · AMYVID · APOKYN · APTIOM · AUBAGIO · AUSTEDO · AVONEX · Adlarity · Aimovig · Austedo XR · BAFIERTAM · BOTOX · BOTOX THERAPEUTIC · BRIUMVI · Betaseron · Briviact · COMIRNATY · COPAXONE · CREXONT · DUOPA · Dhivy · Duopa · ELEVIEW · ELYXYB - celecoxib · EMGALITY · FIRDAPSE · FYCOMPA · GAMMAGARD · GILENYA · GOCOVRI · Gamunex-C · Gralise · HORIZANT · HYQVIA · Hizentra · Horizant · INBRIJA · INFINITY · INGREZZA · KESIMPTA · KISUNLA · KYNMOBI · LEMTRADA · LYRICA · Leqembi · MAVENCLAD · MAYZENT · MIGRANAL · MYOBLOC · Mavenclad · NAMZARIC · NORTHERA · NOURIANZ · NUEDEXTA · NUPLAZID · NURTEC ODT · Neupro · Nourianz · Nuedexta · OCREVUS · OCTAGAM IMMUNE GLOBULIN (HUMAN) · OXTELLAR XR · Ongentys · PANZYGA · PAXLOVID · PLEGRIDY · POMPE - DISEASE · PONVORY · Ponvory · QUDEXY XR Topiramate Extended Release Capsules · QULIPTA · Qutenza · RADICAVA · RELEXXII · REXULTI · RYTARY · Radicava · Rebif · Rystiggo · SKYCLARYS · SOLIRIS · SPRIX · Solitaire · TECFIDERA · TOPIRAMATE Extended Release Capsules · TOSYMRA · TROKENDI XR · TYSABRI · UBRELVY · ULTOMIRIS · UPLIZNA · VRAYLAR · VUMERITY · VYALEV · VYEPTI · VYVGART · VYVGART HYTRULO · Vimpat · XADAGO · XCOPRI · XEOMIN · Xadago · Xeomin · ZEMBRACE SYMTOUCH · ZEPOSIA · ZTLido · Zilbrysq · Zinbryta
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
170
County median income
$70,293
Nearest hospital to ZIP centroid (approximate)
ORLANDO HEALTH BAYFRONT 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. Diaz is a mixed practice specialist, with above-average Medicare volume (top 10% in FL), 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. Diaz experienced with botox injection, per unit?
Based on Medicare claims data, Dr. Diaz performed 10,400 botox injection, per unit 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. Diaz receive payments from pharmaceutical companies?
Yes. Dr. Diaz received a total of $37,000 from 78 companies across 1,111 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. Diaz's costs compare to other neurologists in St Petersburg?
Dr. Diaz's average Medicare payment per service is $16. 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. Diaz) 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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