Dr. Daniel Marelli , MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) โข Dover, DE
540 S Governors Ave Ste 101a
Dover, DE 199043530
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Daniel Marelli is listed in NPPES under Thoracic Surgery (Cardiothoracic Vascular Surgery).
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NPI assigned on July 15, 2006; this date does not establish years in practice.
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Published CMS data list 233 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99222 โ Initial hospital care with straightforward or low-level medical decision making: 47 service units.
- 99214 โ Established patient outpatient office visit: 31 service units.
- 99215 โ Established patient outpatient office visit: 29 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 10 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 12 Medicare Part D prescriptions, including refills, in 2018.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2018. Published rows only; this is not a quality measure.
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Published Part D records, 2018:
- Metoprolol Tartrate โ 12 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2018. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Thoracic Surgery (Cardiothoracic Vascular Surgery) in Delaware (2024, 15 clinicians with data). Median for this group: 233. Middle half: 175 to 608.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 436 in 2020 to 233 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
540 S Governors Ave Ste 101a
Dover, DE 199043530
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Bayhealth Medical Center, Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
1986
What Public CMS Data Show
Thoracic Surgery (Cardiothoracic Vascular Surgery): NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
180 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $51,617 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $40,318 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
12 standardized 30-day fills in 2018
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$66 in 2018
The total cost of these prescriptions in 2018, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2018.
Open Payments general payments, program year 2025
All general payments: $1,479.56 across 25 records.
By nature of payment
- Food and Beverage: $869.39 across 21 records.
- Travel and Lodging: $610.17 across 4 records.
Reporting-company totals (3 largest of 8)
- W. L. Gore & Associates, Inc.: $810.13 across 8 records.
- Medtronic, Inc.: $411.76 across 10 records.
- Stryker Corporation: $67.83 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
40 years (graduated 1986)
CMS Doctors and Clinicians data list 1986 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Marelli has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Marelli as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Dover and Delaware
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Thoracic Surgery (Cardiothoracic Vascular Surgery) in Delaware (2024, 15 clinicians with data). Median for this group: 233. Middle half: 175 to 608.
Too few clinicians listed under Thoracic Surgery (Cardiothoracic Vascular Surgery) in Dover have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 70% of clinicians listed under Thoracic Surgery (Cardiothoracic Vascular Surgery) in Delaware (2024, 15 clinicians with data). Median for this group: $75,044. Middle half: $45,377 to $120,735.
Too few clinicians listed under Thoracic Surgery (Cardiothoracic Vascular Surgery) in Dover have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 70% of clinicians listed under Thoracic Surgery (Cardiothoracic Vascular Surgery) in Delaware (2024, 15 clinicians with data). Median for this group: $58,994. Middle half: $35,806 to $93,329.
Too few clinicians listed under Thoracic Surgery (Cardiothoracic Vascular Surgery) in Dover have Medicare Part B data for 2024 to compare.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Marelli are from 2018.
4 active clinicians are listed under Thoracic Surgery (Cardiothoracic Vascular Surgery) with a practice address in Dover, DE (28 in Delaware).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 47% from 436 in 2020 to 233 in 2024.
- 2020: 436
- 2021: 354
- 2022: 197
- 2023: 318
- 2024: 233
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Medicare-allowed amount
Medicare-allowed amount decreased 47% from $96,546 in 2020 to $51,617 in 2024.
- 2020: $96,546
- 2021: $80,008
- 2022: $53,681
- 2023: $81,549
- 2024: $51,617
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Paid by Medicare
Paid by Medicare decreased 47% from $76,469 in 2020 to $40,318 in 2024.
- 2020: $76,469
- 2021: $63,696
- 2022: $42,819
- 2023: $64,526
- 2024: $40,318
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 14 in 2013 to 12 in 2018.
- 2013: 14
- 2014: 11
- 2016: 16
- 2017: 12
- 2018: 12
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30-day fills
30-day fills decreased 60% from 30 in 2013 to 12 in 2018.
- 2013: 30
- 2014: 21
- 2016: 24
- 2017: 14
- 2018: 12
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Part D drug cost
Part D drug cost went from $112 in 2013 to $66 in 2018.
- 2013: $112
- 2014: $110
- 2016: $118
- 2017: $34
- 2018: $66
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $182.66 in 2021 to $1,479.56 in 2025.
- 2021: $182.66
- 2022: $459.35
- 2023: $64.40
- 2024: $1,406.13
- 2025: $1,479.56
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2018), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): 25 records totaling $1,479.56.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| W. L. Gore & Associates, Inc. |
Travel and Lodging
In-kind items and services
|
GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis | General | $256.50 |
| W. L. Gore & Associates, Inc. |
Travel and Lodging
In-kind items and services
|
GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis | General | $238.06 |
| W. L. Gore & Associates, Inc. |
Food and Beverage
In-kind items and services
|
GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis | General | $125.69 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ENDURANT IIS | General | $123.45 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
VALIANT CAPTIVIA | General | $81.05 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
VALIANT CAPTIVIA | General | $75.65 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
NA | General | $67.83 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
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VALIANT CAPTIVIA | General | $66.02 |
| W. L. Gore & Associates, Inc. |
Travel and Lodging
In-kind items and services
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GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis | General | $60.78 |
| W. L. Gore & Associates, Inc. |
Travel and Lodging
In-kind items and services
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GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis | General | $54.83 |
| Baxter Healthcare |
Food and Beverage
In-kind items and services
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TISSEEL | General | $44.38 |
| ABIOMED |
Food and Beverage
In-kind items and services
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โ | General | $36.72 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
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NAVITOR | General | $33.25 |
| DePuy Synthes Sales Inc. |
Food and Beverage
In-kind items and services
|
ZIPFIX | General | $29.58 |
| W. L. Gore & Associates, Inc. |
Food and Beverage
In-kind items and services
|
GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis | General | $29.48 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
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MITRACLIP | General | $23.46 |
| W. L. Gore & Associates, Inc. |
Food and Beverage
In-kind items and services
|
GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis | General | $23.32 |
| AtriCure, Inc. |
Food and Beverage
In-kind items and services
|
ATRICLIP LAA EXCLUSION SYSTEM | General | $22.45 |
| W. L. Gore & Associates, Inc. |
Food and Beverage
In-kind items and services
|
GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis | General | $21.47 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ENDURANT IIS | General | $18.90 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ENDURANT IIS | General | $17.57 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ENDURANT IIS | General | $13.36 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ENDURANT IIS | General | $8.74 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ENDURANT IIS | General | $5.75 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ENDURANT IIS | General | $1.27 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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47 | 46 | $587.28 | $126.91 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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31 | 23 | $455.81 | $94.57 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
|
29 | 26 | $701.24 | $140.09 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
|
26 | 17 | $263.50 | $76.50 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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23 | 23 | $796.96 | $125.53 |
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33508
Harvest of vein using an endoscope
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18 | 18 | $66.33 | $11.03 |
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33533
Coronary artery bypass using artery graft, 1 graft
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18 | 18 | $8598.11 | $1283.99 |
|
99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
|
15 | 14 | $147.73 | $48.04 |
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99221
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes
|
14 | 14 | $352.71 | $80.49 |
|
33361
Replacement of aortic valve through the skin and femoral artery
|
12 | 12 | $4529.33 | $718.65 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2018.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Metoprolol Tartrate | Metoprolol Tartrate | 12 | 360 | $65.60 | โ |
Source: CMS Part D by Provider and Drug, 2018; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-09-14NUCC Taxonomy Code: 208G00000X
A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - CARDIAC SURGERY
I20080703000107
DE
9234121716
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Bayhealth Medical Center, Inc
640 S State St, Dover, DE 199013530
Phone: 3027444700
Bayhealth Medical Center, Inc
100 Wellness Way, Milford, DE 199634364
Phone: 3027447113
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery - Vascular Surgery
Doctor of Medicine (M.D.)
Surgery - Vascular Surgery
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Nurse Practitioner
Nurse Practitioner
Physician Assistant
Physician Assistant
Physician Assistant
Physician Assistant
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 640 S. STATE STREET, MAIL CODE 3055, DOVER, DE 199013530 (Tel: 3024801688)
NPI status registered as active in NPPES database
Registered at 540 S GOVERNORS AVE STE 101A, DOVER, DE 199043530 (Tel: 3027447980)
Registered at 640 S. STATE STREET, POB 3RD FLOOR, DOVER, DE 19901 (Tel: 3024801688)
Recorded as DANIEL MARELLI, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) (license number reported to NPPES: PA MD423331)
NPI status registered as active in NPPES database
Registered at 540 S GOVERNORS AVENUE, DOVER, DE 19904 (Tel: 3027447980)
Registered at 540 S GOVERNORS AVENUE, DOVER, DE 19904 (Tel: 3027447980)
Recorded as DANIEL MARELLI, M.D.
Surgery (license number reported to NPPES: PA MD423331)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Thoracic Surgery (Cardiothoracic Vascular Surgery)s in Dover
Healthcare providers in DoverMailing Address
640 S. State Street, Mail Code 3055
Dover, DE 199013530
Phone: 3024801688