NPPES file of Aug 9, 2026

Crystal Renee Gardner-Martin, MD

Nephrology Physician · Livonia, MI

Crystal Renee Gardner-Martin, MD is a nephrology physician with a practice address in Livonia, Michigan, and NPI 1447244280, issued on Sep 8, 2005. Check the license (Michigan 4301073171, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1447244280
Name
Crystal Renee Gardner-Martin
Credential
MD
Primary taxonomy
Nephrology Physician 207RN0300X
License number
4301073171 MI
Self-reported in NPPES; status is on the state search
Practice location
18302 Middlebelt RD, Livonia, MI 48152
Phone
(248) 478-1500
Enumerated
Sep 8, 2005
Record last updated
Sep 9, 2022
Fax
(248) 478-2798
Medicaid IDs
10-42053230 MI
1447244280 MI
Medicare enrollment
Enrolled (PECOS I20050412001320); accepts Medicare assignment
Medical or professional school
University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1995
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 18302 Middlebelt RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Alison Allor, PA-CPhysician Assistant1184811036
  2. Jason Biederman, DONephrology Physician1750374229
  3. Michael Collier, DONephrology Physician1215920798
  4. Jagjot Dhingra, DOInternal Medicine Physician1629869821
  5. Jane Elias, NPFamily Nurse Practitioner1457886350
  6. Victoria Golas, DONephrology Physician1740677038

Verify Crystal Renee Gardner-Martin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301073171
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

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2.3 times the Medicare Part D claims of the average nephrology physician in 2024

3,346 Medicare Part D claims for 364 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims. 34 claims were for opioids.

  1. Crystal Gardner-Martin3,346
  2. Specialty average1,465

Most prescribed

  1. Furosemide277 claims
  2. Farxiga195 claims
  3. Amlodipine-Olmesartan147 claims
  4. Ozempic144 claims
  5. Losartan Potassium133 claims
  6. Amlodipine Besylate131 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $4,130.01

75 payments; by number, the most common kind was food and beverage; the largest payer was Travere Therapeutics, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Crystal Gardner-Martin$4,130.01
  2. Specialty average$3,091.37

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Hypertension Nephrology Associates PCLivonia, MI
  2. Sciometrix LLCRoyal Oak, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Crystal Renee Gardner-Martin among 376 nephrology physician records in Michigan

Crystal Renee Gardner-Martin, MD is one of 376 nephrology physician records with a practice address in Michigan. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 88% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated1995 · median 2001 among the 279 with a school on file
  • Record last updated2022 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nephrology Physician providers in Michigan

There are 376 nephrology physician records in Michigan.

The 8 nephrology physician records with the nearest ZIP codes

  1. Jason Biederman, DOLivonia, MI 481521750374229
  2. Michael Collier, DOLivonia, MI 481521215920798
  3. Victoria Golas, DOLivonia, MI 481521740677038
  4. Khaled Ismail, M.D.Livonia, MI 481521467674895
  5. Michael Keefe, DOLivonia, MI 481521952393985
  6. Stacy Ker, DOLivonia, MI 481521841404217
  7. Mark Marrone, MDLivonia, MI 481521003809575
  8. Kelly Mercier, DOLivonia, MI 481521154554749

Common questions

What is Crystal Renee Gardner-Martin, MD's NPI number?

Crystal Renee Gardner-Martin, MD's National Provider Identifier (NPI) is 1447244280, issued on Sep 8, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Crystal Renee Gardner-Martin, MD located?

The NPPES record lists a practice address at 18302 Middlebelt RD, Livonia, MI, 48152. Phone: (248) 478-1500. Providers update this record themselves, so call before visiting.

How can I verify Crystal Renee Gardner-Martin, MD's license?

NPPES lists Michigan license number 4301073171, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Crystal Renee Gardner-Martin, MD prescribe under Medicare Part D?

In 2024, Crystal Renee Gardner-Martin, MD had 3,346 Medicare Part D claims for 364 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.