Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John Alfred Cowan Jr., MD

Individual provider Neurological Surgery Physician · NPI 1588786669

John Alfred Cowan Jr., MD practises Neurosurgery in Rome, Georgia. Graduated from Johns Hopkins University School of Medicine in 2001, 25 years ago. Practices with Adventist Health System Georgia Inc, a 244-clinician group and accepts Medicare assignment. Licensed in Georgia.

Years since qualifying
25
Trained at
Johns Hopkins University School of Medicine
Licensed in
GA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

15 John Maddox Dr NW
Rome, GA 30165-1413
Phone: (706) 368-8550
Fax: (706) 236-7473
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurological Surgery Physician (primary) Taxonomy 207T00000X · Licence 060167 (GA)

Record details

NPI number1588786669
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 6, 2007
Last updated in NPPESSeptember 5, 2023
Certification dateSeptember 5, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEUROSURGERY
Medical schoolJOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2001 (25 years in practice)
Group practice Adventist Health System Georgia Inc — 244 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Spinal fusion 387 times · 97th percentile
Laminectomy or laminotomy (partial removal of spine bones) 108 times · 95th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients205
Services billed 891 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Royalty or License $608,672 17 payments · paid for the use of something the clinician owns or invented, such as a patent; not a fee for care or for time
Food and Beverage $10 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Adventhealth Gordon Hospital · Calhoun, GA
  • Adventhealth Redmond Hospital · Rome, GA
  • Atrium Health Floyd Medical Center Hospital · Rome, GA
  • Coosa Valley Home Health, An Amedisys Home health agency · Rome, GA

Also affiliated with 1 long-term care hospital, which CMS identifies by certification number only.

Colleagues at Adventist Health System Georgia Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 244 clinicians in the practice; 12 are shown here.

Other providers in Rome