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Dr. John Baker, MD

Cardiology (Cardiovascular Disease Physician)

  • Medicare participating

At a glance

Years since graduation
36
In the NPI registry since
2005
Medicare patients seen, 2024
928

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

  • 1990Medical school: University of Tennessee, Hsc, College of Medicine
  • 2005Registered 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

  • Cardiovascular Disease Physician primary
    TN license 28097

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

Map: Cardiology 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
928
Services billed
2,340
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only372316
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report273213
Established patient office or other outpatient visit, 20-29 minutes269189
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes222108
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function216210
Established patient office or other outpatient visit, 30-39 minutes158131
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes9083
New patient office or other outpatient visit, 45-59 minutes6464
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician6363
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician6161

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.

Payments from drug and device companies

In 2025, 9 companies reported 39 payments worth $1,459 in total to this clinician.

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Nov 13, 2025Abiomed
Nov 13, 2025
Travel and Lodging
travel to Tampa, FL · in-kind
$325
Nov 21, 2025Abiomed
Nov 21, 2025
Travel and Lodging
travel to Tampa, FL · in-kind
$68.87
Nov 21, 2025Abiomed
Nov 21, 2025
Travel and Lodging
travel to Tampa, FL · in-kind
$62.61

Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Tennessee →

Other Cardiology clinicians in Jackson

Sources

NPI registry (CMS NPPES, November 2026; record last updated June 7, 2022), 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 1003801796. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.