Active NPI 1124054457 Individual Practitioner Female Practitioner

Dr. Mary Louise Sebastian , MD

Surgery • Arlington, VA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Mary Sebastian, MD is a certified Surgery practicing in Arlington, VA. With approximately 26 years of clinical experience since graduating from University Of Virginia School Of Medicine in 2000, Dr. Sebastian delivers high-quality medical care to the local community at 1851 N GEORGE MASON DR STE 5D.

Dr. Sebastian is affiliated with Virginia Hospital Center Physician Group Llc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, limited ultrasound scan of 1 breast, partial removal of breast. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1851 N George Mason Dr Ste 5d

Arlington, VA 222071953

Telephone 7037174217

Fax 7037174218

Associated Practice Facility / Clinic

🏢 Virginia Hospital Center Physician Group, Llc Facility NPI 1952743031

Medicare Profile & Education

Medical School

University Of Virginia School Of Medicine

Graduation Year

2000

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Arlington, VA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

26 Yrs +2.3 yrs vs City Avg

City Avg: 23.7 Yrs

State Avg: 24.6 Yrs

Regional Practice Density

12 Specialists

Practicing in Arlington, VA (909 Statewide)

Telehealth Adoption Rate

41.7% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

67.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Sebastian (26 Years) 26 Yrs

Arlington Specialty Average (23.7 Years) 23.7 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	78	73	$290.47	$141.02
76642 Limited ultrasound scan of 1 breast	45	42	$195.61	$94.76
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	45	37	$401.27	$191.30
19301 Partial removal of breast	31	24	$1635.80	$579.43
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	29	29	$492.43	$235.74
0546T Radiofrequency spectroscopy evaluation of surgical margins during partial mastectomy, with report	23	23	$1784.00	$80.75
38900 Lymph node imaging during surgery	22	21	$312.90	$151.76
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	22	21	$1037.09	$251.53
G2212 Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or	20	17	$70.03	$35.18
14301 Repair of wound by transferring skin, 30.1-60.0 sq cm	20	16	$1994.57	$891.67
19285 Placement of locating device in breast using ultrasound guidance, first growth	17	17	$178.54	$44.43
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$360.40	$184.67

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	151	146	$277.16	$144.40
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	89	72	$387.29	$202.60
76642 Limited ultrasound scan of 1 breast	63	57	$198.09	$102.01
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	50	50	$474.98	$248.47
19301 Partial removal of breast	35	29	$1447.53	$573.54
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	31	29	$971.04	$294.84
38900 Lymph node imaging during surgery	29	27	$293.30	$153.19
19285 Placement of locating device in breast using ultrasound guidance, first growth	25	25	$656.02	$48.57
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	24	24	$360.40	$188.65
99213 Established patient office or other outpatient visit, typically 15 minutes	23	23	$196.32	$102.88
0546T Radiofrequency spectroscopy evaluation of surgical margins during partial mastectomy, with report	21	21	$1784.00	$82.79
14301 Repair of wound by transferring skin, 30.1-60.0 sq cm	20	20	$2283.70	$942.30
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	13	13	$124.43	$65.07

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	113	104	$268.93	$148.55
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	65	54	$375.02	$208.81
76642 Limited ultrasound scan of 1 breast	44	38	$199.63	$104.62
99213 Established patient office or other outpatient visit, typically 15 minutes	38	37	$189.75	$105.04
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	34	34	$457.39	$255.97
14301 Repair of wound by transferring skin, 30.1-60.0 sq cm	26	24	$2399.04	$904.27
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	26	26	$346.94	$193.97
19301 Partial removal of breast	26	22	$1445.22	$517.87
38900 Lymph node imaging during surgery	22	22	$324.46	$163.55
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	21	21	$1045.34	$318.19
0546T Radiofrequency spectroscopy evaluation of surgical margins during partial mastectomy, with report	18	18	$1784.00	$83.19
19285 Placement of locating device in breast using ultrasound guidance, first growth	16	16	$1196.11	$47.91

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	122	111	$268.65	$151.80
76642 Limited ultrasound scan of 1 breast	63	55	$199.63	$107.78
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	39	32	$375.02	$202.14
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	37	37	$457.15	$258.42
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	36	36	$346.94	$195.91
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	30	30	$975.65	$299.42
38900 Lymph node imaging during surgery	30	30	$303.75	$161.79
19301 Partial removal of breast	24	23	$1575.29	$606.14
14301 Repair of wound by transferring skin, 30.1-60.0 sq cm	23	22	$2399.04	$869.57
19285 Placement of locating device in breast using ultrasound guidance, first growth	16	16	$1196.11	$51.59
0546T Radiofrequency spectroscopy evaluation of surgical margins during partial mastectomy, with report	15	14	$1784.00	$189.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	99	88	$234.54	$126.80
76642 Limited ultrasound scan of 1 breast	50	49	$206.53	$105.06
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	28	21	$317.53	$169.68
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	27	27	$357.11	$190.41
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	26	26	$448.59	$240.60
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	23	23	$975.65	$286.32
38900 Lymph node imaging during surgery	22	22	$303.75	$164.57
19301 Partial removal of breast	19	17	$1445.22	$497.56
14301 Repair of wound by transferring skin, 30.1-60.0 sq cm	17	17	$2399.04	$976.74
19285 Placement of locating device in breast using ultrasound guidance, first growth	16	16	$1196.11	$50.08

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	80	76	$234.54	$121.87
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	48	35	$315.40	$165.98
19301 Partial removal of breast	39	31	$1445.22	$509.66
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	36	36	$448.59	$234.72
76642 Limited ultrasound scan of 1 breast	36	34	$199.63	$103.31
38900 Lymph node imaging during surgery	33	32	$317.56	$162.70
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	33	33	$1020.00	$296.10
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	31	31	$357.50	$187.26
14301 Repair of wound by transferring skin, 30.1-60.0 sq cm	30	29	$2399.04	$958.10
19285 Placement of locating device in breast using ultrasound guidance, first growth	27	27	$1196.11	$49.50
99354 Prolonged office or other outpatient service first hour	14	12	$279.24	$146.09
19499 Breast procedure	12	12	$1784.00	$134.96
19125 Removal of breast growth, open procedure	12	12	$1225.23	$493.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	84	78	$233.88	$120.54
99213 Established patient office or other outpatient visit, typically 15 minutes	31	30	$159.29	$82.72
19301 Partial removal of breast	30	25	$1446.98	$552.22
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	26	26	$447.79	$224.56
14301 Repair of wound by transferring skin, 30.1-60.0 sq cm	25	24	$2396.22	$821.30
76642 Limited ultrasound scan of 1 breast	24	23	$199.42	$105.60
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	23	22	$314.67	$163.34
38900 Lymph node imaging during surgery	16	15	$303.75	$162.23
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	15	14	$975.65	$303.17
78195 Imaging of lymphatic tissue and lymph node	14	14	$787.98	$64.62
19296 Insertion of catheter into breast for radiation therapy using imaging guidance	13	13	$9241.29	$4811.36
38740 Removal of underarm lymph nodes	13	13	$1548.00	$523.77
38790 Injection procedure for x-ray imaging of the lymphatic system	12	12	$185.00	$47.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	109	98	$234.30	$120.21
99213 Established patient office or other outpatient visit, typically 15 minutes	77	65	$160.23	$81.83
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	54	40	$314.71	$162.32
76642 Limited ultrasound scan of 1 breast	36	34	$199.00	$103.22
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	32	32	$357.00	$179.74
78195 Imaging of lymphatic tissue and lymph node	27	27	$763.94	$65.00
38790 Injection procedure for x-ray imaging of the lymphatic system	27	27	$191.33	$47.74
38740 Removal of underarm lymph nodes	27	27	$1595.63	$563.42
19301 Partial removal of breast	26	23	$1535.56	$475.63
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	26	26	$451.12	$231.20
14301 Repair of wound by transferring skin, 30.1-60.0 sq cm	16	15	$2436.03	$890.10
19296 Insertion of catheter into breast for radiation therapy using imaging guidance	15	14	$9345.66	$4745.74
19285 Placement of locating device in breast using ultrasound guidance, first growth	15	15	$1119.67	$48.89
19125 Removal of breast growth, open procedure	12	12	$1222.00	$491.69

Medical Specialties & State Licenses

CMS Verified: 2026-02-23

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License VA 0101233396

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.

Hospital & Practice Group Affiliations

Virginia Hospital Center Physician Group Llc

1625 N George Mason Dr, Arlington, VA 222053690

Phone: 7037174217

Secondary Practice Locations

1760 Old Meadow Rd Ste 210

Mc Lean, VA 221024330

Phone: 7037177775

1625 N George Mason Dr Ste 315

Arlington, VA 222053690

Phone: 7037174217

Practice Associates & Co-Workers

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

2 Associated Practitioners

Dr. Alison Goldenberg , MD

Surgery

NPI 1407233836

Doctor of Medicine (M.D.)

Dr. Marilyn Nguyen , MD

Plastic Surgery

NPI 1760623342

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

11 Historical Events

📍

Updated Practice Location February 23, 2026

Registered at 1851 N GEORGE MASON DR STE 5D, ARLINGTON, VA 222071953 (Tel: 7037174217)

📍

Updated Business Mailing Address February 23, 2026

Registered at 1851 N GEORGE MASON DR STE 5D, ARLINGTON, VA 222071953 (Tel: 7037174217)

📍

Updated Practice Location January 20, 2022

Registered at 1625 N GEORGE MASON DR STE 315, ARLINGTON, VA 222053690 (Tel: 7037174217)

📍

Updated Business Mailing Address January 20, 2022

Registered at 1625 N GEORGE MASON DR STE 315, ARLINGTON, VA 222053690 (Tel: 7037174217)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 20, 2022

Surgery (License #0101233396 in VA)

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 600 N WOLFE ST, BALTIMORE, MD 212870005 (Tel: 4109555662)

📍

Updated Business Mailing Address July 08, 2007

Registered at PO BOX 64563, BALTIMORE, MD 212644563

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as MARY SEBASTIAN, M.D.

🎓

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

Surgery (License #D64710 in MD)

🟢

Initial NPI Registration & Enumeration June 26, 2006

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: 1124054457

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: June 26, 2006

Last Update: February 23, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1851 N George Mason Dr Ste 5d

Arlington, VA 222071953

Phone: 7037174217

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.