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Rheumatology

Erika J. Kalash, DO

Sees patients in Calabasas, CA · California

Summary

Dr. Erika J. Kalash, DO is a rheumatologist at 23500 Park Sorrento, Unit A2, Calabasas, CA 91302. Phone: (818) 661-0939. Accepts Medicare assignment. In 2024, Erika J. Kalash had 33 Original Medicare patients and 286 services. NPI 1003251471. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Rheumatologist (Medicare lists Rheumatology)
  • Address: 23500 Park Sorrento, Unit A2, Calabasas, CA 91302 · Directions
  • Phone: (818) 661‑0939
  • Medicare: Accepts Medicare assignment
  • Group practice: Oxygenwell Hyperbaric and Regenerative Medicine Corp
  • Medical school: Lake Erie College Of Osteopathic Medicine, Erie · graduated 2013 (13 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Erika J. Kalash, 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 Erika J. Kalash accept Medicare assignment?
Yes. Medicare's clinician data says Erika J. Kalash 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 Erika J. Kalash see?
In 2024, CMS data shows 33 Original Medicare patients and 286 services for Erika J. Kalash. This counts Original Medicare only and measures volume, not quality.
What is Erika J. Kalash's NPI number?
1003251471. 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 Erika J. Kalash, 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 patients33
Services billed to Medicare286
Different services or procedures23
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)49 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 cholesterol64%
  • High blood pressure61%
  • Arthritis52%
  • Diabetes36%

Practice locations

Addresses where Erika J. Kalash is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Erika J. Kalash as a member of this group (CMS data updated October 2, 2026).

  • Oxygenwell Hyperbaric and Regenerative Medicine Corp3 clinicians in the group

Specialties

Find other Rheumatology doctors in California →

Other rheumatologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All rheumatologists in California →

Other clinicians in Oxygenwell Hyperbaric and Regenerative Medicine Corp

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

Clinician information

CredentialDO
Medical schoolLake Erie College Of Osteopathic Medicine, Erie
Graduation year2013 (13 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1003251471
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians