Mark Sullivan, M.D.
NPI 1346669660 · Internal Medicine Physician · Arlington, VA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Sullivan, M.D. is a Internal Medicine Physician provider in Arlington, VA (NPI 1346669660).
Provider details
- NPI number
- 1346669660
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 291511-1 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
902 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 221 | $136 |
| 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'SG2211 | 160 | $18 |
| Assessment of Emotional Or Behavioral Problems96127 | 58 | $5 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 40 | $98 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 37 | $138 |
| Blood Test, Lipids (cholesterol and Triglycerides) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 165 | 68 |
| Rosuvastatin Calcium | 127 | 53 |
| Metformin Hcl | 114 | 50 |
| Losartan Potassium | 107 | 43 |
| Levothyroxine Sodium | 99 | 43 |
| Amlodipine Besylate | 95 | 38 |
| Tamsulosin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$851 across 42 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- Dept of MedicineHsc Level 16, Suny Stony BrookStony Brook, NY 11794-7097Phone: (631) 444-7411Fax: (631) 444-2493
- Hsc T16-020Stony Brook, NY 11794-8160Phone: (631) 444-8478Fax: (631) 444-7546
Registry dates
- Enumerated
- 2014-04-15
- Last updated
- 2025-03-06
- Certified
- 2025-03-06
Frequently asked questions
- What is Mark Sullivan's NPI number?
- Mark Sullivan's National Provider Identifier (NPI) is 1346669660, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Sullivan's specialty?
- Mark Sullivan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Sullivan located?
- Mark Sullivan's practice location on file with NPPES is 2445 Army Navy Dr Ste 400, Arlington, VA 22206-2988.
- What is Mark Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Mark Sullivan is (703) 379-8879.
- Does Mark Sullivan accept Medicare?
- Mark Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Sullivan's NPI active?
- Yes — Mark Sullivan's NPI (1346669660) is active in the NPPES registry as of the last update on 2025-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.