Cynthia Griggs, M.D.
Nephrology Physician · Detroit, MI
Cynthia Griggs, M.D. is a nephrology physician with a practice address in Detroit, Michigan, and NPI 1154421774, issued on Sep 24, 2006. Check the license (Michigan 4301061868, as entered in NPPES) on the Michigan Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Cynthia Griggs
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 4301061868 MI
Self-reported in NPPES; status is on the state search - Practice location
- 18455 James Couzens Fwy, Detroit, MI 48235
- Phone
- (313) 341-7870
- Enumerated
- Sep 24, 2006
- Entity
- Type 1 · individual
Verify Cynthia Griggs in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine
Search for license 4301061868Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
50% fewer Medicare Part D claims than the average nephrology physician in 2024
758 Medicare Part D claims for 67 beneficiaries, against an average of 1,511 among the 8,473 providers of this specialty who prescribed in Part D. 60 claims were for opioids.
Most prescribed
- Amlodipine Besylate70 claims
- Furosemide45 claims
- Prednisone41 claims
- Pantoprazole Sodium29 claims
- Hydrocodone-Acetaminophen26 claims
- Albuterol Sulfate Hfa23 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.
One hospital or facility affiliation
- CC Griggs Holding, Ltd.Detroit, MI
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Nephrology Physician providers in Michigan
There are 269 nephrology physician records in Michigan.
Other nephrology physician records in Michigan
- Mohamed AbdaliDetroit, MI1629852728
- Mohamed Abdalla, M.D.Flint, MI1760797344
- Ameer Abdulrazzak, MDRoseville, MI1104948280
- Hassan Abou-Rass, M.D.Detroit, MI1831596428
- Fadi Abuhmaid, MDAllen Park, MI1396869665
- George Adam, M.D.Battle Creek, MI1316902562
- Shreedhar Adhikari, MDWest Branch, MI1033560057
- Damali Adu, M.D.Westland, MI1356640890
- Muhammad Ahsan, M.D.Southfield, MI1396725305
- Syed Akbar, MDAllen Park, MI1477554699
Common questions
What is Cynthia Griggs, M.D.'s NPI number?
Cynthia Griggs, M.D.'s National Provider Identifier (NPI) is 1154421774, issued on Sep 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia Griggs, M.D. located?
The NPPES record lists a practice address at 18455 James Couzens Fwy, Detroit, MI, 48235. Phone: (313) 341-7870. Providers update this record themselves, so call before visiting.
How can I verify Cynthia Griggs, M.D.'s license?
NPPES lists Michigan license number 4301061868, as entered by the provider. Search the Michigan Board of Medicine at https://www.michigan.gov/lara/bureau-list/bpl/health/hp-lic-health-prof/medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Cynthia Griggs, M.D. prescribe under Medicare Part D?
In 2024, Cynthia Griggs, M.D. had 758 Medicare Part D claims for 67 beneficiaries; the average among nephrology physician prescribers was 1,511. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.