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Active NPI 1780685677 Individual Practitioner Male Practitioner

Dr. John Dana Mannion , MD

Thoracic Surgery (Cardiothoracic Vascular Surgery) • Dover, DE

Professional Overview & Biography Verified Profile Summary

Dr. John Mannion, MD is a registered healthcare professional specializing in Thoracic Surgery (Cardiothoracic Vascular Surgery) in Dover, DE. Practice services are available at 540 S GOVERNORS AVE under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

540 S Governors Ave
Suite 101a

Dover, DE 199043530

Telephone 3027447980
Associated Practice Facility / Clinic
🏢 Bayhealth Neurosurgery Facility NPI 1093106478

Specialty Benchmarks & Practice Insights

Comparative analytics for Thoracic Surgery (Cardiothoracic Vascular Surgery) in Dover, DE

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 37.3 Yrs
State Avg: 30.7 Yrs
Regional Practice Density
4 Specialists

Practicing in Dover, DE (30 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary Specialty

NUCC Taxonomy Code: 208G00000X

State License DE C1-0007255

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
1000032313 (DE)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

16 Associated Practitioners
Dr. Luiz Araujo , MD

Surgery - Vascular Surgery

NPI 1053743724

Doctor of Medicine (M.D.)

Dr. Gary Szydlowski , MD

Thoracic Surgery (Cardiothoracic Vascular Surgery)

NPI 1164473070

Doctor of Medicine (M.D.)

Dr. Kaitlyn Melnick , MD

Neurological Surgery

NPI 1366975187

Doctor of Medicine (M.D.)

John Winstead , PA-C

Physician Assistant

NPI 1407023492

Physician Assistant (Certified)

NPI 1407196447

Adult-Gerontology Acute Care Nurse Practitioner (Board Certified)

Dr. Daniel Swink , MD

Surgery - Vascular Surgery

NPI 1437653466

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events
NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 540 S GOVERNORS AVE, SUITE 101A, DOVER, DE 199043530 (Tel: 3027447980)

📍
Updated Business Mailing Address July 08, 2007

Registered at 704 GREEN WINGED TRL, CAMDEN WYOMING, DE 199349530 (Tel: 3026971377)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as JOHN MANNION, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Thoracic Surgery (Cardiothoracic Vascular Surgery) (License #C1-0007255 in DE)

🟢
Initial NPI Registration & Enumeration August 02, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1780685677
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 02, 2005
Last Update: July 13, 2026
Sole Proprietor: No

Mailing Address

704 Green Winged Trl

Camden Wyoming, DE 199349530

Phone: 3026971377

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.