Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Mark Ford Sullivan , MD

Internal Medicine โ€ข Arlington, VA

Active NPI 1346669660 Individual Practitioner Male Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

2445 Army Navy Dr Ste 400
Arlington, VA 222062988

Call 7033798879 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

2445 Army Navy Dr Ste 400

Arlington, VA 222062988

Telephone 7033798879
Fax 7039986821
Organization at the Same NPPES Address or Phone
Northern Virginia Family Practice Associates Facility NPI 1992869689

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 2 distinct additional practice-address records in Stony Brook, NY. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 1 group name: Northern Virginia Family Practice Associates. 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

Medical School

University Of Rochester School Of Medicine And Dentistry

Graduation Year

2014

Medicare patients

185 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider, 2024.

Medicare-allowed amount

About $54,839 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.

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 $41,312 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

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

4,495 standardized 30-day fills in 2024

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

$213,778 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

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, 2024.

Open Payments general payments, program year 2025

All general payments: $376.46 across 17 records.

By nature of payment

  • Food and Beverage: $376.46 across 17 records.

Reporting-company totals (3 largest of 10)

  • Novo Nordisk Inc: $93.15 across 4 records.
  • Amgen Inc.: $48.54 across 2 records.
  • ABBVIE INC.: $46.20 across 2 records.

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.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

12 years (graduated 2014)

CMS Doctors and Clinicians data list 2014 as the year this clinician finished professional 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

2014

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.

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, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Sullivan 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.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Sullivan 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.

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.

Guide: What ordering and referring status means

Compared with the same specialty in Arlington and Virginia

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Close to the middle for clinicians listed under Internal Medicine in Arlington, VA (2024, 67 clinicians with data). Median for this group: 862. Middle half: 436 to 1,584.

Close to the middle for clinicians listed under Internal Medicine in Virginia (2024, 2,010 clinicians with data). Median for this group: 748. Middle half: 335 to 1,431.

Medicare-allowed amount

A lower Medicare-allowed amount than 65% of clinicians listed under Internal Medicine in Arlington, VA (2024, 67 clinicians with data). Median for this group: $92,184. Middle half: $43,377 to $146,282.

A lower Medicare-allowed amount than 60% of clinicians listed under Internal Medicine in Virginia (2024, 2,010 clinicians with data). Median for this group: $73,309. Middle half: $32,676 to $134,131.

Paid by Medicare

A lower Medicare payment amount than 65% of clinicians listed under Internal Medicine in Arlington, VA (2024, 67 clinicians with data). Median for this group: $70,275. Middle half: $33,190 to $112,610.

A lower Medicare payment amount than 60% of clinicians listed under Internal Medicine in Virginia (2024, 2,010 clinicians with data). Median for this group: $56,392. Middle half: $24,672 to $102,762.

Medicare Part D prescriptions

More Part D prescriptions than 60% of clinicians listed under Internal Medicine in Arlington, VA (2024, 69 clinicians with data). Median for this group: 973. Middle half: 55 to 2,614.

Close to the middle for clinicians listed under Internal Medicine in Virginia (2024, 2,088 clinicians with data). Median for this group: 684. Middle half: 116 to 4,028.

Part D drug cost

A higher Part D drug cost than 70% of clinicians listed under Internal Medicine in Arlington, VA (2024, 69 clinicians with data). Median for this group: $55,940. Middle half: $701 to $224,924.

A higher Part D drug cost than 65% of clinicians listed under Internal Medicine in Virginia (2024, 2,088 clinicians with data). Median for this group: $49,170. Middle half: $2,703 to $324,085.

122 active clinicians are listed under Internal Medicine with a practice address in Arlington, VA (3,603 in Virginia).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Arlington

31.1% of these 122 clinicians have the CMS telehealth indicator.

68% of these 122 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), 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

Open Payments ยท Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 โ€“ December 31, 2025): 17 records totaling $376.46.

Manufacturer Payment Nature Product Type Amount ($)
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $34.64
Amgen Inc.
Food and Beverage
In-kind items and services
KRYSTEXXA General $29.35
Exact Sciences Corporation
Food and Beverage
In-kind items and services
The Cologuard Plus Collection Kit General $26.94
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Wegovy General $24.84
ABBVIE INC.
Food and Beverage
In-kind items and services
QULIPTA General $24.18
Becton, Dickinson and Company
Food and Beverage
In-kind items and services
BD MAX System, BD MAX Instrument General $24.18
Pfizer Inc.
Food and Beverage
In-kind items and services
PREVNAR 20 General $23.92
ABBVIE INC.
Food and Beverage
In-kind items and services
UBRELVY General $22.02
Eli Lilly and Company
Food and Beverage
In-kind items and services
MOUNJARO General $20.88
Pfizer Inc.
Food and Beverage
In-kind items and services
NURTEC ODT General $20.84
GlaxoSmithKline, LLC.
Food and Beverage
In-kind items and services
AREXVY General $19.25
Eli Lilly and Company
Food and Beverage
In-kind items and services
MOUNJARO General $19.23
Amgen Inc.
Food and Beverage
In-kind items and services
KRYSTEXXA General $19.19
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Wegovy General $18.11
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
AIRSUPRA General $18.05
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Wegovy General $15.56
Esperion Therapeutics, Inc.
Food and Beverage
In-kind items and services
NEXLETOL General $15.28

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B ยท Data Year 2024
Reporting Year:

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2017โ€“2023 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, 2018โ€“2024; 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
221 128 $242.82 $136.22
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
160 105 $37.59 $17.62
96127 Assessment of emotional or behavioral problems
58 49 $16.31 $5.43
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
40 37 $171.00 $98.48
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
37 37 $303.59 $138.27
80061 Blood test, lipids (cholesterol and triglycerides)
33 33 $46.00 $13.12
80053 Blood test, comprehensive group of blood chemicals
32 32 $36.00 $10.35
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
32 32 $27.00 $7.61
84443 Blood test, thyroid stimulating hormone (tsh)
29 29 $57.00 $16.46
84481 Thyroid hormone, t3 measurement, free
29 29 $58.00 $16.60
84439 Thyroxine (thyroid chemical), free
28 28 $31.00 $8.84
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
28 13 $115.00 $68.50
99497 Advance care planning, first 30 minutes
27 27 $239.00 $87.90
83036 Hemoglobin a1c level
26 26 $33.00 $9.52
36415 Insertion of needle into vein for collection of blood sample
25 25 $10.00 $8.65
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
18 18 $72.78 $15.27
G0447 Face-to-face behavioral counseling for obesity, 15 minutes
18 15 $68.44 $27.28
90480 Admn sarscov2 vacc 1 dose
15 13 $68.67 $47.79
91320 Sarscv2 vac 30mcg trs-suc im
14 12 $177.21 $140.80
G0444 Annual depression screening, 5 to 15 minutes
13 13 $29.00 $21.33
81002 Urinalysis, manual test
11 11 $15.55 $3.41
87428 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza
11 11 $130.36 $68.88
93922 Ultrasound study of arm and leg arteries
11 11 $150.00 $95.43

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 2024.

CMS Part D ยท Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 165 14,627 $1,273.48 68
Rosuvastatin Calcium Rosuvastatin Calcium 127 10,969 $1,261.83 53
Metformin Hcl Metformin Hcl 114 10,130 $705.74 50
Losartan Potassium Losartan Potassium 107 8,586 $912.16 43
Levothyroxine Sodium Levothyroxine Sodium 99 8,950 $969.84 43
Amlodipine Besylate Amlodipine Besylate 95 8,046 $511.73 38
Tamsulosin Hcl Tamsulosin Hcl 73 5,890 $594.40 32
Lisinopril Lisinopril 57 5,080 $386.71 28
Omeprazole Omeprazole 48 3,774 $525.77 21
Metoprolol Succinate Metoprolol Succinate 42 3,600 $681.87 16
Metformin Hcl Er Metformin Hcl 36 3,240 $453.63 14
Escitalopram Oxalate Escitalopram Oxalate 34 2,880 $159.44 19
Diclofenac Sodium Diclofenac Sodium 32 832 $798.47 21
Ozempic Semaglutide 32 1,708 $50,919.60 โ€”
Jardiance Empagliflozin 31 2,740 $53,548.41 13
Trazodone Hcl Trazodone Hcl 28 2,160 $187.71 14
Sertraline Hcl Sertraline Hcl 27 1,830 $145.14 13
Furosemide Furosemide 27 1,686 $79.70 โ€”
Farxiga Dapagliflozin Propanediol 27 2,070 $38,471.90 โ€”
Carvedilol Carvedilol 26 2,340 $155.94 12
Simvastatin Simvastatin 24 2,115 $80.77 11
Mounjaro Tirzepatide 23 812 $30,710.45 โ€”
Gabapentin Gabapentin 21 1,244 $358.87 14
Lisinopril-Hydrochlorothiazide Lisinopril/Hydrochlorothiazide 21 1,890 $106.18 โ€”
Hydrochlorothiazide Hydrochlorothiazide 20 1,760 $111.30 โ€”

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-03-06
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES VA 0101264845

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Internal Medicine

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES NY 291511-1

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Student in an Organized Health Care Education/Training Program

NUCC Taxonomy Code: 390200000X

An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Virginia Department of Health Professions.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20200206000882

Enrollment State Jurisdiction

DC

PECOS Control ID

5597024208

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

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

Northern Virginia Family Practice Associates

2311 M St Nw, Washington, DC 200371468

Phone: 2028610111

Northern Virginia Family Practice Associates

2445 Army Navy Dr, Arlington, VA 222062988

Phone: 7033798879

Secondary Practice Locations

Hsc T16-020

Stony Brook, NY 117948160

Phone: 6314448478

Dept Of Medicine, Hsc Level 16, Suny Stony Brook

Stony Brook, NY 117947097

Phone: 6314447411

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

6 listed
NPI 1124287776

Doctor of Medicine (M.D.)

NPI 1386713063

Doctor of Medicine (M.D.)

NPI 1609042134

Doctor of Medicine (M.D.)

NPI 1265589816

Doctor of Medicine (M.D.)

Jessica Ware , PA-C

Physician Assistant - Medical

NPI 1003921008

Physician Assistant (Certified)

Dr. Louis Zweig , MD

Internal Medicine

NPI 1730197591

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

18 Historical Events
๐Ÿ“
Updated Practice Location March 06, 2025

Registered at 2445 ARMY NAVY DR STE 400, ARLINGTON, VA 222062988 (Tel: 7033798879)

๐Ÿ“
Updated Business Mailing Address March 06, 2025

Registered at 2445 ARMY NAVY DR STE 400, ARLINGTON, VA 222062988 (Tel: 7033798879)

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) March 06, 2025

Internal Medicine (license number reported to NPPES: NY 291511-1)

๐Ÿ“
Updated Practice Location January 13, 2020

Registered at 6128 BRANDON AVE STE 201, SPRINGFIELD, VA 221502693 (Tel: 5713594000)

๐Ÿ“
Updated Business Mailing Address January 13, 2020

Registered at 6128 BRANDON AVE STE 201, SPRINGFIELD, VA 221502693 (Tel: 5713594000)

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) January 13, 2020

Internal Medicine (license number reported to NPPES: VA 0101264845)

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) March 17, 2018

Student in an Organized Health Care Education/Training Program

โœ…
NPI Profile Active December 04, 2017

NPI status registered as active in NPPES database

๐Ÿ“
Updated Practice Location December 04, 2017

Registered at HSC T16-020, STONY BROOK, NY 117948160 (Tel: 6314448478)

๐Ÿ“
Updated Business Mailing Address December 04, 2017

Registered at PO BOX 1554, STONY BROOK, NY 117900988 (Tel: 6314440650)

๐Ÿ‘ค
Provider Name / Credentials Updated December 04, 2017

Recorded as MARK SULLIVAN, M.D.

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) December 04, 2017

Internal Medicine (license number reported to NPPES: NY 291511-1)

โœ…
NPI Profile Active April 15, 2014

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) April 15, 2014

Registered at DEPT OF MEDICINE, HSC LEVEL 16, SUNY STONY BROOK, STONY BROOK, NY 117947097 (Tel: 6314447411)

๐Ÿ“
Business Mailing Address (Initial Record) April 15, 2014

Registered at DEPT OF MEDICINE, HSC LEVEL 16, SUNY STONY BROOK, STONY BROOK, NY 117947097 (Tel: 6314447411)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) April 15, 2014

Recorded as MARK SULLIVAN, M.D.

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) April 15, 2014

Student in an Organized Health Care Education/Training Program

๐ŸŸข
Initial NPI Registration & Enumeration April 15, 2014

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1346669660
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: April 15, 2014
Last Update: March 06, 2025
Sole Proprietor: No

Other Internal Medicine Providers in Arlington

All Internal Medicine Providers in Arlington

Mailing Address

2445 Army Navy Dr Ste 400

Arlington, VA 222062988

Phone: 7033798879

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.