Dr. Mary Tilak PC
NPI 1356525133 · Obesity Medicine (Internal Medicine) Physician · Merrillville, IN
Dr. Mary Tilak PC is a Obesity Medicine (Internal Medicine) Physician organization in Merrillville, IN (NPI 1356525133).
Provider details
- NPI number
- 1356525133
- Entity type
- Organization
- Primary specialty
- Obesity Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mary Tilak, President(219) 922-8051
- License
- 01054662A (IN)
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
18 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
- 2007-12-28
- Last updated
- 2007-12-28
Frequently asked questions
- What is Dr. Mary Tilak PC's NPI number?
- Dr. Mary Tilak PC's National Provider Identifier (NPI) is 1356525133, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Dr. Mary Tilak PC?
- Dr. Mary Tilak PC is classified in the NPPES registry as Obesity Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Dr. Mary Tilak PC located?
- Dr. Mary Tilak PC's practice location on file with NPPES is 209 East 86th Avenue, Merrillville, IN 46322-2601.
- What is Dr. Mary Tilak PC's phone number?
- The practice phone number listed in the NPPES registry for Dr. Mary Tilak PC is (219) 922-8051.
- Who is the authorized official for Dr. Mary Tilak PC?
- The authorized official listed on Dr. Mary Tilak PC's NPPES record is Mary Tilak, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Dr. Mary Tilak PC's NPI active?
- Yes — Dr. Mary Tilak PC's NPI (1356525133) is active in the NPPES registry as of the last update on 2007-12-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.