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

Emergency Medicine

Steven P. Grahek, MD

Sees patients in Lancaster, CA · California

Summary

Steven P. Grahek, MD (Emergency Medicine) is enrolled with Medicare at 1 practice location in Lancaster, CA. NPI 1801963772. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Steven P. Grahek, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
48Years since medical school (graduated 1978)
Temple University School Of MedicineMedical school
MaleGender (as listed)
High Desert Medical CorporationGroup practice

Quick answers

Where does Steven P. Grahek see patients?
Medicare's clinician data lists 1 practice location in Lancaster, CA. Call before your visit to confirm the address.
What is Steven P. Grahek's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Steven P. Grahek accept Medicare assignment?
Yes. Medicare's clinician data says Steven P. Grahek accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Steven P. Grahek?
(661) 945-5984, as listed in official Medicare / NPI Registry data.
What is Steven P. Grahek's NPI number?
1801963772. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Steven P. Grahek is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Steven P. Grahek as a member of this group (CMS data updated 2026-10-02).

  • High Desert Medical Corporation54 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Lancaster

Clinicians with the same Medicare primary specialty in Lancaster, CA — not a recommendation.

All emergency medicine doctors in Lancaster →

Clinician information

CredentialMD
Medical schoolTemple University School Of Medicine
Graduation year1978
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1801963772
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 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians