Crystal Renee Gardner-Martin, MD
NPI 1447244280ActiveIndividual· Internal Medicine, Nephrology· Livonia, MI
Internal Medicine, Nephrology (MD) in Livonia, Michigan, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $938,914 for 3,346 claims, against $126,103 paid for services in 2024. Travere Therapeutics, Inc. was the largest of 15 companies reporting payments in 2025, $5,671 in all, mostly consulting fees.
Overview
| NPI | 1447244280 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 8, 2005 |
| Last updated in NPPES | Sep 9, 2022 |
| Certified by provider | Sep 9, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 4301073171 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 250 |
|---|---|
| Services billed | 1,585 across 34 procedure codes |
| Paid by Medicare | $126,103 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,346 · 6,286 30-day fills |
|---|---|
| Patients | 364 |
| Total drug cost | $938,914 |
| Generic share | 75% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Nephrology |
Medical group
- Hypertension Nephrology Associates PCLivonia, MI · 13 clinicians
Hospital affiliations
- Beaumont Hospital - DearbornDearborn, MI
- Beaumont Hospital - Farmington HillsFarmington Hills, MI
- Henry Ford Health St John HospitalDetroit, MI
- Huron Valley-Sinai HospitalCommerce Township, MI
- Henry Ford Health Warren HospitalWarren, MI
Other facilities
- Fmc Dialysis - BewickDialysis facility · Detroit, MI
Industry payments (Open Payments)
- 2025$5,671 · 85 payments from 15 companies
- 2024$4,150 · 89 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Travere Therapeutics, Inc. | $4,022 | 17 |
| Astrazeneca Pharmaceuticals LP | $260.42 | 15 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $250.60 | 16 |
| Novartis Pharmaceuticals Corporation | $197.22 | 9 |
| Ardelyx, Inc. | $177.78 | 4 |
What the 2025 payments were for
- Consulting Fee$2,700 · 1 payment
- Food and Beverage$2,044 · 78 payments
- Travel and Lodging$873.31 · 3 payments
- Education$53.80 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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