Mark E. Tiritilli
Internal Medicine Physician · Indianapolis, IN
Mark E. Tiritilli is an internal medicine physician with a practice address in Indianapolis, Indiana, and NPI 1538119953, issued on May 10, 2006. Check the license (Indiana 01043935A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Mark E. Tiritilli
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 01043935A IN
Self-reported in NPPES; status is on the state search - Practice location
- 9443 E 38TH St, Indianapolis, IN 46235
- Phone
- (317) 890-2100
- Enumerated
- May 10, 2006
- Record last updated
- Oct 2, 2025
- Fax
- (317) 890-2171
- Medicaid ID
- 100200080 IN
- Medicare enrollment
- Enrolled (PECOS I20100426000418); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Also registered at 9443 E 38TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jama Agresta, FNPFamily Nurse Practitioner1134041973
- Kathi Bledsoe, MSW, LCSWClinical Social Worker1568882702
- Sarah Carpenter, MDObstetrics & Gynecology Physician1902076300
- Rebecca Cook, LDHDental Hygienist1740507748
- Mary Elmasry, DDSDentist1477286193
- Marie Fox, LDHDental Hygienist1275613911
Verify Mark E. Tiritilli in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01043935ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average internal medicine physician in 2024
7,367 Medicare Part D claims for 286 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 542 claims were for opioids.
Most prescribed
- Atorvastatin Calcium349 claims
- Albuterol Sulfate Hfa333 claims
- Amlodipine Besylate296 claims
- Oxycodone-Acetaminophen262 claims
- Hydrocodone-Acetaminophen204 claims
- Gabapentin177 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 91.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- The Health And Hospital Corporation OF Marion CountyIndianapolis, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark E. Tiritilli among 2,109 internal medicine physician records in Indiana
Mark E. Tiritilli 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
- Graduated1991 · median 2005 among the 1,448 with a school on file
- Record last updated2025 · 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).
699 internal medicine physician records list a practice address in Indianapolis
They are 699 of the 30,493 NPPES records with a practice address in Indianapolis, and 2,109 internal medicine physician records in Indiana.
All 2,109 in Indiana → Every provider in Indianapolis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Coby Richeson, MDIndianapolis, IN 462341700835204
- Louis Wright, M.D.Indianapolis, IN 462361386641074
- Stanley Adkins, MDIndianapolis, IN 462371972609493
- Anthony Dowell, MDIndianapolis, IN 462371922046150
- Sumayya Fatima, MDIndianapolis, IN 462371346275666
Common questions
What is Mark E. Tiritilli's NPI number?
Mark E. Tiritilli's National Provider Identifier (NPI) is 1538119953, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark E. Tiritilli located?
The NPPES record lists a practice address at 9443 E 38TH St, Indianapolis, IN, 46235. Phone: (317) 890-2100. Providers update this record themselves, so call before visiting.
How can I verify Mark E. Tiritilli's license?
NPPES lists Indiana license number 01043935A, 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 Mark E. Tiritilli prescribe under Medicare Part D?
In 2024, Mark E. Tiritilli had 7,367 Medicare Part D claims for 286 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mark E. Tiritilli's MIPS final score?
The 2023 MIPS final score is 91.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.