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Neurosurgery

Allan J. Belzberg, MD

Works at hospitals in Baltimore, MD · Chapel Hill, NC · Maryland, North Carolina

Summary

Dr. Allan J. Belzberg, MD is a neurosurgeon at 600 N Wolf St, Baltimore, MD 21287. Phone: (410) 955-5000. May accept Medicare assignment. In 2024, Allan J. Belzberg had 165 Original Medicare patients and 346 services. NPI 1124083340. 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 Allan J. Belzberg, 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 Allan J. Belzberg accept Medicare assignment?
Medicare's clinician data says Allan J. Belzberg may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Allan J. Belzberg see?
In 2024, CMS data shows 165 Original Medicare patients and 346 services for Allan J. Belzberg. This counts Original Medicare only and measures volume, not quality.
What is Allan J. Belzberg's NPI number?
1124083340. 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 Allan J. Belzberg, 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 patients165
Services billed to Medicare346
Different services or procedures46
Participating Medicare providerYes
Average age of these patients69

Most frequent services

  1. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)80 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)60 services
  3. Deep biopsy of muscle (20205)23 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)15 services
  5. Placement of stabilizing device to back, 3-6 spine bone segments (22842)11 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%
  • Arthritis72%
  • High blood pressure64%
  • Diabetes29%
  • Anxiety29%
  • Depression27%

Hospitals where Allan J. Belzberg works

Medicare's Facility Affiliation Data lists Allan J. Belzberg 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 Allan J. Belzberg is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Johns Hopkins University2,909 clinicians in the group

Specialties

Find other Neurosurgery doctors in Maryland →

Other neurosurgeons in Baltimore

Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.

All neurosurgeons in Baltimore →

Other clinicians in Johns Hopkins University

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

Clinician information

CredentialMD
Graduation year1982 (44 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1124083340
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