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

Internal Medicine

James R. Gittzus, MD

Works at hospitals in Pittsfield, MA · Great Barrington, MA · North Adams, MA · Massachusetts

Summary

Dr. James R. Gittzus, MD is an internal medicine doctor at 188 E St, Suite 102, Pittsfield, MA 01201. Phone: (413) 499-2921. Accepts Medicare assignment. In 2024, James R. Gittzus had 671 Original Medicare patients and 5,359 services. NPI 1649359845. 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 James R. Gittzus, 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 James R. Gittzus accept Medicare assignment?
Yes. Medicare's clinician data says James R. Gittzus 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 James R. Gittzus see?
In 2024, CMS data shows 671 Original Medicare patients and 5,359 services for James R. Gittzus. This counts Original Medicare only and measures volume, not quality.
What is James R. Gittzus's NPI number?
1649359845. 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 James R. Gittzus, 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 patients671
Services billed to Medicare5,359
Different services or procedures44
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,006 services
  2. Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)718 services
  3. Telephone medical discussion with physician, 11-20 minutes (99442)449 services
  4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)363 services
  5. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)351 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%
  • Arthritis44%
  • Diabetes37%
  • Anxiety29%
  • Ischemic heart disease26%

Hospitals where James R. Gittzus works

Medicare's Facility Affiliation Data lists James R. Gittzus 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.

  • Berkshire Medical CenterPittsfield, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220046
  • Fairview HospitalGreat Barrington, MA · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 221302
  • North Adams Regional Hospital CorporationNorth Adams, MA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 221304

Practice locations

Addresses where James R. Gittzus is enrolled with Medicare (CMS data updated October 2, 2026).

  • 188 E St, Suite 102Pittsfield, MA 01201 (413) 499‑2921
  • 2600 Compass RdGlenview, IL 60026

Group practices

Medicare enrollment lists James R. Gittzus as a member of this group (CMS data updated October 2, 2026).

  • Select Rehabilitation, LLC2,046 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Pittsfield

Clinicians with the same Medicare primary specialty in Pittsfield, MA — not a recommendation.

All internal medicine doctors in Pittsfield →

Other clinicians in Select Rehabilitation, LLC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Massachusetts Medical School
Graduation year1979 (47 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1649359845
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