IndividualActive
Mark Sullivan, M.D.
NPI 1215036603 · Internal Medicine Physician · Arlington, MA
Mark Sullivan, M.D. is a Internal Medicine Physician provider in Arlington, MA (NPI 1215036603).
Provider details
- NPI number
- 1215036603
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 40783 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
Practice location
37 Broadway
Lahey Arlington
Arlington, MA 02474-5552
Phone: (781) 641-0100
Fax: (781) 744-7132
Street-level locationGet directions
Mailing address
Lahey Clinic
Burlington, MA 01805-0001
Registry dates
- Enumerated
- 2006-09-21
- Last updated
- 2012-12-05
Frequently asked questions
- What is Mark Sullivan's NPI number?
- Mark Sullivan's National Provider Identifier (NPI) is 1215036603, 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 37 Broadway, Arlington, MA 02474-5552.
- What is Mark Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Mark Sullivan is (781) 641-0100.
- Is Mark Sullivan's NPI active?
- Yes — Mark Sullivan's NPI (1215036603) is active in the NPPES registry as of the last update on 2012-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.