Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Crystal Renee Gardner-Martin, MD

Individual provider Nephrology Physician · NPI 1447244280

Crystal Renee Gardner-Martin, MD practises Nephrology in Livonia, Michigan. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1995, 31 years ago. Practices with Hypertension Nephrology Associates PC, a 13-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
31
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
MI
In the registry since
2005
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

18302 Middlebelt Rd
Livonia, MI 48152-5007
Phone: (248) 478-1500
Fax: (248) 478-2798
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 5250 Auto Club Dr Ste 100, Dearborn, MI 48126-2619 — (248) 478-1500
  • 7633 E Jefferson Ave Ste 180, Detroit, MI 48214-3731 — (248) 478-1500

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 4301073171 (MI)

Record details

NPI number1447244280
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 8, 2005
Last updated in NPPESSeptember 9, 2022
Certification dateSeptember 9, 2022

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1995 (31 years in practice)
Group practice Hypertension Nephrology Associates Pc — 13 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients250
Services billed 1,585 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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.

Consulting Fee $2,700 1 payment
Food and Beverage $2,044 76 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $873 3 payments · travel or lodging paid or reimbursed, such as to attend a conference
Education $54 3 payments · educational material or training, 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 Hypertension Nephrology Associates PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Livonia