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Neurosurgery

Timothy Chryssikos, MD

Works at hospitals in Berlin, MD · Baltimore, MD · Maryland

Summary

Dr. Timothy Chryssikos, MD is a neurosurgeon at 22 S Green St, Baltimore, MD 21201. Phone: (410) 328-6704. Accepts Medicare assignment. In 2024, Timothy Chryssikos had 123 Original Medicare patients and 440 services. NPI 1841673332. 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 Timothy Chryssikos, 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 Timothy Chryssikos accept Medicare assignment?
Yes. Medicare's clinician data says Timothy Chryssikos 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 Timothy Chryssikos see?
In 2024, CMS data shows 123 Original Medicare patients and 440 services for Timothy Chryssikos. This counts Original Medicare only and measures volume, not quality.
What is Timothy Chryssikos's NPI number?
1841673332. 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 Timothy Chryssikos, 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 patients123
Services billed to Medicare440
Different services or procedures78
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Fusion of additional segment of spine (22614)71 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)71 services
  3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)24 services
  4. Placement of stabilizing device to back, 3-6 spine bone segments (22842)19 services
  5. Fusion of spine in neck by posterior approach (22600)18 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%
  • Arthritis75%
  • Diabetes42%
  • Depression39%
  • Anxiety38%

Hospitals where Timothy Chryssikos works

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

Group practices

Medicare enrollment lists Timothy Chryssikos as a member of these groups (CMS data updated October 2, 2026).

  • Shock Trauma Associates PA261 clinicians in the group
  • University of Maryland Neurosurgery Associates P A25 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 Shock Trauma Associates PA

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

Clinician information

CredentialMD
Medical schoolUniversity Of Maryland School Of Medicine
Graduation year2015 (11 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1841673332
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