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Internal Medicine

Alina B. Elperin, MD

Works at hospitals in Evanston, IL · Lake Forest, IL · Winfield, IL … · Illinois

Summary

Dr. Alina B. Elperin, MD is an internal medicine doctor at 990 S Waukegan Rd, Suite 200, Lake Forest, IL 60045. Phone: (847) 234-8100. Accepts Medicare assignment. In 2024, Alina B. Elperin had 295 Original Medicare patients and 668 services. NPI 1477831931. 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 Alina B. Elperin, 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 Alina B. Elperin accept Medicare assignment?
Yes. Medicare's clinician data says Alina B. Elperin 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 Alina B. Elperin see?
In 2024, CMS data shows 295 Original Medicare patients and 668 services for Alina B. Elperin. This counts Original Medicare only and measures volume, not quality.
What is Alina B. Elperin's NPI number?
1477831931. 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 Alina B. Elperin, 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 patients295
Services billed to Medicare668
Different services or procedures21
Participating Medicare providerYes
Average age of these patients75

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)266 services
  2. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)174 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)50 services
  4. Face-to-face behavioral counseling for obesity, 15 minutes (G0447)47 services
  5. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)41 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 cholesterol75%
  • High blood pressure66%
  • Arthritis54%
  • Diabetes28%
  • Ischemic heart disease24%
  • Depression24%

Hospitals where Alina B. Elperin works

Medicare's Facility Affiliation Data lists Alina B. Elperin 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 Alina B. Elperin is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Alina B. Elperin as a member of this group (CMS data updated October 2, 2026).

  • Forward Focus Medical Care LLC9 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Lake Forest

Clinicians with the same Medicare primary specialty in Lake Forest, IL — not a recommendation.

All internal medicine doctors in Lake Forest →

Other clinicians in Forward Focus Medical Care LLC

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

Clinician information

CredentialMD
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1477831931
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