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Active NPI 1932195914 Individual Practitioner Male Practitioner

Dr. John J. Moynihan , MD

Surgery • Fairfax, VA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. John Moynihan, MD is a certified Surgery practicing in Fairfax, VA. With approximately 46 years of clinical experience since graduating from Georgetown University School Of Medicine in 1980, Dr. Moynihan delivers high-quality medical care to the local community at 3620 JOSEPH SIEWICK DR.

Dr. Moynihan is affiliated with Inova Health Care Services and accepts Medicare assignment.

Frequently performed procedures and clinical services include new patient outpatient office visit, established patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

3620 Joseph Siewick Dr
Suite 406

Fairfax, VA 220331756

Telephone 7033598640
Fax 7035916105
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Georgetown University School Of Medicine

Graduation Year

1980

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Fairfax, VA

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
46 Yrs +20.6 yrs vs City Avg
City Avg: 25.4 Yrs
State Avg: 24.6 Yrs
Regional Practice Density
45 Specialists

Practicing in Fairfax, VA (909 Statewide)

Telehealth Adoption Rate
22.2% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
57.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Moynihan (46 Years) 46 Yrs
Fairfax Specialty Average (25.4 Years) 25.4 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
17 17 $293.00 $123.74

Medical Specialties & State Licenses

CMS Verified: 2020-10-21
Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License VA 0101033952

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
7374101 (VA)

Hospital & Practice Group Affiliations

Inova Health Care Services

8221 Willow Oaks Corporate Dr, Fairfax, VA 220314512

Phone: 7032373446

Inova Health Care Services

3300 Gallows Rd, Falls Church, VA 220423307

Practice Associates & Co-Workers

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

28 Associated Practitioners
NPI 1003802208

Doctor of Medicine (M.D.)

NPI 1033613021

Doctor of Medicine (M.D.)

Danielle Eganhouse , PA-C

Physician Assistant

NPI 1053764811

Physician Assistant (Certified)

Christine Gilloon , RD

Dietitian, Registered

NPI 1073097952

Registered Dietitian

Dr. Paul Savoca , MD

Colon & Rectal Surgery

NPI 1104817857

Doctor of Medicine (M.D.)

Han Nguyen , NP

Nurse Practitioner - Family

NPI 1164938247

Nurse Practitioner

Career & Practice History Timeline

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

6 Historical Events
NPI Profile Active August 02, 2010

NPI status registered as active in NPPES database

📍
Updated Practice Location August 02, 2010

Registered at 3620 JOSEPH SIEWICK DR, SUITE 406, FAIRFAX, VA 220331756 (Tel: 7033598640)

📍
Updated Business Mailing Address August 02, 2010

Registered at 3620 JOSEPH SIEWICK DR, SUITE 406, FAIRFAX, VA 220331756 (Tel: 7033598640)

👤
Provider Name / Credentials Updated August 02, 2010

Recorded as JOHN MOYNIHAN, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 02, 2010

Surgery (License #0101033952 in VA)

🟢
Initial NPI Registration & Enumeration September 23, 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: 1932195914
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: September 23, 2005
Last Update: November 27, 2023
Sole Proprietor: No

Mailing Address

3620 Joseph Siewick Dr, Suite 406

Fairfax, VA 220331756

Phone: 7033598640

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.