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Dr. Gary L. Baker, MD

Rheumatology (Rheumatology Physician)

  • Medicare participating

At a glance

Years since graduation
48
In the NPI registry since
2006
Medicare patients seen, 2024
256

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 1978Medical school: University of Nebraska College of Medicine
  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Rheumatology Physician primary
    MN license 25221

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Rheumatology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
256
Services billed
8,369
Patients’ average age
72
Most frequent Medicare services, 2023
ServiceTimesPatients
Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)2,12511
Insertion of needle into vein for collection of blood sample184127
Established patient office or other outpatient visit, 30-39 minutes168123
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count165110
Established patient office or other outpatient visit, 20-29 minutes154120
Liver enzyme (sgpt), level14598
Liver enzyme (sgot), level14296
Blood creatinine level5850
Red blood cell sedimentation rate, to detect inflammation, automated4739
New patient office or other outpatient visit, 45-59 minutes4141

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Other Rheumatology clinicians in Saint Paul

Sources

NPI registry (CMS NPPES, November 2026; record last updated November 4, 2020), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1932168036. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.