Mary Sullivan, M.D.
NPI 1437168416 · Internal Medicine Physician · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Sullivan, M.D. is a Internal Medicine Physician provider in Oak Lawn, IL (NPI 1437168416).
Provider details
- NPI number
- 1437168416
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036077688 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-08-07
- Last updated
- 2010-06-21
Frequently asked questions
- What is Mary Sullivan's NPI number?
- Mary Sullivan's National Provider Identifier (NPI) is 1437168416, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Sullivan's specialty?
- Mary Sullivan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Sullivan located?
- Mary Sullivan's practice location on file with NPPES is 5660 W 95th St, Oak Lawn, IL 60453-2380.
- What is Mary Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Mary Sullivan is (708) 499-4190.
- Does Mary Sullivan accept Medicare?
- Mary Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Sullivan's NPI active?
- Yes — Mary Sullivan's NPI (1437168416) is active in the NPPES registry as of the last update on 2010-06-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.