Joshua Esinwoke Nnanji, MD
Psychiatry Physician · Mason, MI
Joshua Esinwoke Nnanji, MD is a psychiatry physician with a practice address in Mason, Michigan, and NPI 1821291550, issued on Jun 8, 2007. Check the license (Michigan 4301091517, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Joshua Esinwoke Nnanji
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 4301091517 MI
Self-reported in NPPES; status is on the state search - Practice location
- 585 Jewett RD, Mason, MI 48854
- Phone
- (517) 676-5405
- Enumerated
- Jun 8, 2007
- Record last updated
- Feb 11, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (517) 676-5460
- Medicaid ID
- 064004 IA
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,729 in Michigan → Look up another NPI →
Also registered at 585 Jewett RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erica Adams, BA, QIDPCase Manager/Care Coordinator1871126748
- Nicole AdeAttendant Care Provider1104381185
- Brenda AustinAttendant Care Provider1740846088
- Vanity BronsonAttendant Care Provider1265064018
- Makayla BrowerAttendant Care Provider1972092542
- Alphonso BurchPersonal Care Attendant1033625132
Verify Joshua Esinwoke Nnanji in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301091517Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average psychiatry physician in 2024
807 Medicare Part D claims for 84 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Quetiapine Fumarate75 claims
- Trazodone Hcl46 claims
- Aripiprazole37 claims
- Bupropion Xl35 claims
- Benztropine Mesylate33 claims
- Clonazepam32 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.
Joshua Esinwoke Nnanji among 1,729 psychiatry physician records in Michigan
Joshua Esinwoke Nnanji, MD is one of 1,729 psychiatry physician records with a practice address in Michigan. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 37% of them.
- NPI issued2007 · 37% of these records are older, 49% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 48% of these records are
- Record last updated2011 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 psychiatry physician records list a practice address in Mason
They are 4 of the 341 NPPES records with a practice address in Mason, and 1,729 psychiatry physician records in Michigan.
All 1,729 in Michigan → Every provider in Mason → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Sin Chu, M.D.Mason, MI 488541912387770
- Robert Dempsey, D.O.Mason, MI 488541942271390
- David Picone, D.O.Mason, MI 488541568575579
- Kenneth Beroza, MDMt Pleasant, MI 488581760539803
- Kelly Ketchum, MDMt Pleasant, MI 488581942739842
- Mitchel Osman, MDMt Pleasant, MI 488581073696167
- Angela Pinheiro, MDMount Pleasant, MI 488581114983475
- Kaitlyn Shirely, MDMount Pleasant, MI 488581760049928
Common questions
What is Joshua Esinwoke Nnanji, MD's NPI number?
Joshua Esinwoke Nnanji, MD's National Provider Identifier (NPI) is 1821291550, issued on Jun 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joshua Esinwoke Nnanji, MD located?
The NPPES record lists a practice address at 585 Jewett RD, Mason, MI, 48854. Phone: (517) 676-5405. Providers update this record themselves, so call before visiting.
How can I verify Joshua Esinwoke Nnanji, MD's license?
NPPES lists Michigan license number 4301091517, 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 Joshua Esinwoke Nnanji, MD prescribe under Medicare Part D?
In 2024, Joshua Esinwoke Nnanji, MD had 807 Medicare Part D claims for 84 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.