Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

John Kimy Demian Guirguis, MD

Individual provider Hepatology Physician · NPI 1972922466

John Kimy Demian Guirguis, MD practises Nephrology in Mobile, Alabama. Qualified in 2002, 24 years ago. Practices with Nephrology Associates of Mobile, PA, a 41-clinician group and accepts Medicare assignment. Licensed in Alabama, Kentucky and Ohio.

Years since qualifying
24
Licensed in
AL, KY, OH
In the registry since
2014
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

124 S University Blvd Ste A
Mobile, AL 36608-3078
Phone: (251) 343-5004
Fax: (251) 343-8383
Show map & directions

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

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 48579 (AL)
Hepatology Physician Taxonomy 207RI0008X · Licence 57.024042 (OH)
Nephrology Physician Taxonomy 207RN0300X · Licence 55563 (KY)

Record details

NPI number1972922466
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 10, 2014
Last updated in NPPESDecember 9, 2024
Certification dateDecember 9, 2024

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Nephrology Associates Of Mobile, P.A. — 41 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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 patients416
Services billed 1,641 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Food and Beverage $241 10 payments · 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. Those with a page here are linked.

Colleagues at Nephrology Associates of Mobile, PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 41 clinicians in the practice; 12 are shown here.

Other providers in Mobile