Mary N. Tilak, MD
Internal Medicine Physician · Munster, IN
Mary N. Tilak, MD is an internal medicine physician with a practice address in Munster, Indiana, and NPI 1518054352, issued on Oct 5, 2006. Check the license (Indiana 01054662A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Mary N. Tilak
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 01054662A IN
Self-reported in NPPES; status is on the state search - Practice location
- 9410 Calumet Ave, Munster, IN 46321
- Phone
- (219) 922-8051
- Enumerated
- Oct 5, 2006
- Record last updated
- Apr 24, 2026
- Fax
- (219) 922-8608
- Medicaid ID
- 200339190 IN
- Medicare enrollment
- Enrolled (PECOS I20041221000867); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Verify Mary N. Tilak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01054662ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% more Medicare Part D claims than the average internal medicine physician in 2024
4,034 Medicare Part D claims for 541 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 44 claims were for opioids.
Most prescribed
- Pantoprazole Sodium202 claims
- Atorvastatin Calcium196 claims
- Metoprolol Succinate169 claims
- Levothyroxine Sodium162 claims
- Amlodipine Besylate129 claims
- Irbesartan108 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Dr Mary Tilak P CCrown Point, IN
- Indigo Partners LLCMunster, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary N. Tilak among 2,109 internal medicine physician records in Indiana
Mary N. Tilak, MD is one of 2,109 internal medicine physician records with a practice address in Indiana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 54% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1996 · median 2005 among the 1,448 with a school on file
- Record last updated2026 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 internal medicine physician records list a practice address in Munster
They are 30 of the 1,515 NPPES records with a practice address in Munster, and 2,109 internal medicine physician records in Indiana.
All 2,109 in Indiana → Every provider in Munster → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Soraj Arora, DOMunster, IN 463211871571208
- Lawrence Bernstein, MDMunster, IN 463211770586661
- Thomas Brubaker, M.D.Munster, IN 463211063451730
- Rebecca Galante, MDMunster, IN 463211437133220
- Kameswari Kalluri, MDMunster, IN 463211700815644
- Mark Kevin, M.D.Munster, IN 463211134161169
- Oh Lee, M.D.Munster, IN 463211144267444
- Xiao Li, M.D.Munster, IN 463211730122748
Common questions
What is Mary N. Tilak, MD's NPI number?
Mary N. Tilak, MD's National Provider Identifier (NPI) is 1518054352, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary N. Tilak, MD located?
The NPPES record lists a practice address at 9410 Calumet Ave, Munster, IN, 46321. Phone: (219) 922-8051. Providers update this record themselves, so call before visiting.
How can I verify Mary N. Tilak, MD's license?
NPPES lists Indiana license number 01054662A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary N. Tilak, MD prescribe under Medicare Part D?
In 2024, Mary N. Tilak, MD had 4,034 Medicare Part D claims for 541 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.