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Neurology

Mahmood G. Alnahass, MD

Works at hospitals in Crown Point, IN · Michigan City, IN · Gary, IN … · Indiana

Summary

Dr. Mahmood G. Alnahass, MD is a neurologist at 1551 Sturdy Rd, Valparaiso, IN 46383. Phone: (219) 531-6571. Accepts Medicare assignment. In 2024, Mahmood G. Alnahass had 636 Original Medicare patients and 1,537 services. NPI 1497756720. 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 Mahmood G. Alnahass, 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 Mahmood G. Alnahass accept Medicare assignment?
Yes. Medicare's clinician data says Mahmood G. Alnahass 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 Mahmood G. Alnahass see?
In 2024, CMS data shows 636 Original Medicare patients and 1,537 services for Mahmood G. Alnahass. This counts Original Medicare only and measures volume, not quality.
What is Mahmood G. Alnahass's NPI number?
1497756720. 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 Mahmood G. Alnahass, 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 patients636
Services billed to Medicare1,537
Different services or procedures24
Participating Medicare providerYes
Average age of these patients73

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)826 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)374 services
  3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)128 services
  4. Measurement of brain wave activity (eeg), awake and drowsy (95816)54 services
  5. Measurement of brain wave activity (eeg), awake and asleep (95819)37 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%
  • Arthritis47%
  • Diabetes33%
  • Anxiety33%
  • Ischemic heart disease32%

Hospitals where Mahmood G. Alnahass works

Medicare's Facility Affiliation Data lists Mahmood G. Alnahass 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.

Practice locations

Addresses where Mahmood G. Alnahass is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Neurology doctors in Indiana →

Other neurologists in Valparaiso

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

All neurologists in Valparaiso →

Clinician information

CredentialMD
Graduation year1989 (37 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1497756720
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