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

Diagnostic Radiology

Steven H. Kalchman, MD

Sees patients in San Leandro, CA · Horsham, PA · Columbus, OH … · California, Pennsylvania, Ohio

Summary

Dr. Steven H. Kalchman, MD is a radiologist at 10948 Bigge St, Suite A, San Leandro, CA 94577. Phone: (800) 786-8015. Accepts Medicare assignment. In 2024, Steven H. Kalchman had 1,438 Original Medicare patients and 1,687 services. NPI 1255335865. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Radiologist (Medicare lists Diagnostic Radiology)
  • Address: 10948 Bigge St, Suite A, San Leandro, CA 94577 · Directions (4 more locations)
  • Phone: (800) 786‑8015
  • Medicare: Accepts Medicare assignment
  • Group practice: Reono Bertagnolli a Medical Group (+1 more)
  • Medical school: Jefferson Medical College Of Thomas Jefferson University · graduated 1985 (41 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Steven H. Kalchman, 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 Steven H. Kalchman accept Medicare assignment?
Yes. Medicare's clinician data says Steven H. Kalchman 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 Steven H. Kalchman see?
In 2024, CMS data shows 1,438 Original Medicare patients and 1,687 services for Steven H. Kalchman. This counts Original Medicare only and measures volume, not quality.
What is Steven H. Kalchman's NPI number?
1255335865. 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 Steven H. Kalchman, 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 patients1,438
Services billed to Medicare1,687
Different services or procedures76
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. X-ray of chest, 1 view (71045)530 services
  2. X-ray of knee, 1-2 views (73560)88 services
  3. X-ray of abdomen, 1 view (74018)88 services
  4. X-ray of hip, 2-3 views (73502)80 services
  5. X-ray of chest, 2 views (71046)59 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%
  • Arthritis66%
  • Depression57%
  • Diabetes56%
  • Alzheimer's disease or dementia51%

Practice locations

Addresses where Steven H. Kalchman is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Steven H. Kalchman as a member of these groups (CMS data updated October 2, 2026).

  • Reono Bertagnolli a Medical Group47 clinicians in the group
  • Kan-Di-Ki LLC38 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in California →

Other radiologists in San Leandro

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

All radiologists in San Leandro →

Other clinicians in Reono Bertagnolli a Medical Group

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

Clinician information

CredentialMD
Medical schoolJefferson Medical College Of Thomas Jefferson University
Graduation year1985 (41 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1255335865
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