Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr Mary Tilak PC

Organization Obesity Medicine (Internal Medicine) Physician · NPI 1003096900

Dr Mary Tilak PC is an Obesity Medicine (Internal Medicine) Physician in Munster, Indiana. Works from 3 locations. Registered with an NPI since 2007.

In the registry since
2007
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

9410 Calumet Ave Ste 101
Munster, IN 46321-2812
Phone: (219) 922-8051
Fax: (219) 922-8608
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 6625 W Lincoln Hwy, Crown Point, IN 46307-9678 — (219) 922-8051
  • 1275 E North St Ste 102, Crown Point, IN 46307-3541 — (219) 922-8051

Specialties & licences

Obesity Medicine (Internal Medicine) Physician (primary) Taxonomy 207RB0002X

Record details

NPI number1003096900
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mary Tilak — President · (219) 922-8051
NPI enumeratedNovember 7, 2007
Last updated in NPPESApril 24, 2026
Certification dateApril 24, 2026
Mailing addressPo Box 736895, Chicago, IL 60673-6895

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