Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Shaun S. Mehdi, DO

Works at hospitals in Gary, IN · Valparaiso, IN · Hobart, IN · Indiana

Summary

Dr. Shaun S. Mehdi, DO is an internal medicine doctor at 1300 Lincolnway, Valparaiso, IN 46383. Phone: (219) 762-1040. Accepts Medicare assignment. In 2024, Shaun S. Mehdi had 322 Original Medicare patients and 1,370 services. NPI 1851812572. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Shaun S. Mehdi, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Shaun S. Mehdi accept Medicare assignment?
Yes. Medicare's clinician data says Shaun S. Mehdi accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Shaun S. Mehdi see?
In 2024, CMS data shows 322 Original Medicare patients and 1,370 services for Shaun S. Mehdi. This counts Original Medicare only and measures volume, not quality.
What is Shaun S. Mehdi's NPI number?
1851812572. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Shaun S. Mehdi, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients322
Services billed to Medicare1,370
Different services or procedures23
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)735 services
  2. Hemoglobin a1c level (83036)230 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)187 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)29 services
  5. Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit (G0438)21 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis45%
  • Diabetes35%
  • Anxiety27%
  • Ischemic heart disease24%

Hospitals where Shaun S. Mehdi works

Medicare's Facility Affiliation Data lists Shaun S. Mehdi at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Methodist Hospitals IncGary, IN · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 150002
  • Northwest Health - PorterValparaiso, IN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 150035
  • St Mary Medical Center IncHobart, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150034

Practice locations

Addresses where Shaun S. Mehdi is enrolled with Medicare (CMS data updated October 2, 2026).

  • 1300 LincolnwayValparaiso, IN 46383
  • 425 Sand Creek Dr, Suite CChesterton, IN 46304
  • 6200 Central AvePortage, IN 46368 (219) 762‑1040
  • 650 Dickinson RdChesterton, IN 46304

Group practices

Medicare enrollment lists Shaun S. Mehdi as a member of these groups (CMS data updated October 2, 2026).

  • Rci (WRS) LLC360 clinicians in the group
  • Chesterton Physical Therapy Inc186 clinicians in the group
  • Porter Physician Services LLC99 clinicians in the group

Specialties

Find other Internal Medicine doctors in Indiana →

Other internal medicine doctors in Valparaiso

Clinicians with the same Medicare primary specialty in Valparaiso, IN — not a recommendation.

All internal medicine doctors in Valparaiso →

Other clinicians in Rci (WRS) LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Graduation year2017 (9 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1851812572
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians