Medicare Enrolled

Dr. Marissa Nunes, AGACNP-BC

Acute Care Nurse Practitioner · Citrus Heights, CA
Practice pattern: Clinical Cardiology — Primarily office-based clinical cardiology
Low-engagement
7115 GREENBACK LN, Citrus Heights, CA 95621
9167333460
In practice since 2019 (6 years)
NPI: 1700423936 verify on NPPES ↗
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. Nunes 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. Nunes

Dr. Marissa Nunes is an acute care nurse practitioner in Citrus Heights, CA, with 6 years of NPI registration. Based on federal Medicare data, Dr. Nunes performed 1,920 Medicare services across 490 unique beneficiaries.

Between the years covered by Open Payments, Dr. Nunes received a total of $169 from 3 pharmaceutical and/or device companies across 3 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in acute care nurse practitioner. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Nunes 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.

✓ 6 years in practice ▲ Top 3% volume in CA $169 industry payments

Medicare Practice Summary

Medicare Utilization ↗
1,920
Medicare services
Top 3% in CA for acute care nurse practitioner
490
Unique beneficiaries
$25
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~320 Medicare services per year of practice

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
Prothrombin time test (blood clotting)
A laboratory test that measures how long it takes for blood to clot. This procedure evaluates the body's coagulation process.
 807 $4 $9
Office visit, established patient (10-19 min)
An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition.
 753 $35 $126
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.
 180 $87 $280
Exercise or drug-induced heart stress test with ECG
A heart stress test performed using exercise or medication while an electrocardiogram is monitored under physician supervision.
 74 $13 $49
Exercise or drug-induced heart stress test with ECG
A test that monitors the heart's electrical activity while the patient exercises or receives medication to increase heart rate.
 71 $22 $130
Electrocardiogram (EKG), 12-lead
A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report.
 35 $10 $46
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. A higher procedure volume generally indicates more experience with that procedure.

Industry Payment Transparency

Open Payments through 2024 ↗
$169
Total received (2022-2024)
Avg $56/year across 3 years
Bottom 39% in CA for acute care nurse practitioner
3
Companies
3
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →

Payment profile

Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.

Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$169 (100.0%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$27
2023
$109
2022
$33

Payments by company (2024)

Consulting
Speaking
Meals & Travel
Research
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$27
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2022-2024) ›
AstraZeneca Pharmaceuticals LP
$109
Boehringer Ingelheim Pharmaceuticals, Inc.
$33
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$27
Top 3 companies account for 100.0% of all-time payments
Associated products mentioned in payments ›
FARXIGA · JARDIANCE · LifeVest
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. 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 →

Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.

Looking for an acute care nurse practitioner in Citrus Heights?
Compare acute care nurse practitioners in the Citrus Heights area by procedure volume, costs, and industry payment transparency.
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Geographic Context

Acute care nurse practitioners within 10 mi
107
Per 100K population
6.8
County median income
$88,724
Nearest hospital
HERITAGE OAKS HOSPITAL
3.2 mi

Data Sources

Provider Registry ✓ NPPES Weekly updates
Medicare Enrollment ✓ PECOS Monthly updates
Practice Data ✓ Medicare Util. Annual (CY lag)
Industry Payments ✓ Open Payments CY 2024
Disciplinary History — Not public 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. Nunes is a clinical cardiology specialist, with above-average Medicare volume (top 3% in CA), with low-engagement industry engagement.

This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →

Frequently Asked Questions

Is Dr. Nunes experienced with prothrombin time test (blood clotting)?
Based on Medicare claims data, Dr. Nunes performed 807 prothrombin time test (blood clotting) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Nunes receive payments from pharmaceutical companies?
Yes. Dr. Nunes received a total of $169 from 3 companies across 3 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. 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. Nunes's costs compare to other acute care nurse practitioners in Citrus Heights?
Dr. Nunes's average Medicare payment per service is $25. 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. Nunes) 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 a long track record of practice, Medicare participation, and industry disclosure. 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?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →

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About this page

All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): 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.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →