Brennan William Essex, PHARMD, MD
General Practice Physician · Royal Oak, MI
Brennan William Essex, PHARMD, MD is a general practice physician with a practice address in Royal Oak, Michigan, and NPI 1508239112, issued on Nov 4, 2015. Check the license (Michigan 4351048582, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Brennan William Essex
- Credential
- PHARMD, MD
- Primary taxonomy
- General Practice Physician 208D00000X
- License numbers
- 4351048582 MI
5302045831 MI
03334968 OH
Self-reported in NPPES; status is on the state search - Practice location
- 3601 W 13 Mile RD, Royal Oak, MI 48073
- Phone
- (248) 898-5000
- Enumerated
- Nov 4, 2015
- Record last updated
- Jun 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 369 in Michigan → Look up another NPI →
Also registered at 3601 W 13 Mile RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brennan William Essex in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4351048582Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average general practice physician in 2024
436 Medicare Part D claims for 215 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. 48 claims were for opioids.
Most prescribed
- Methocarbamol44 claims
- Ibuprofen41 claims
- Meloxicam32 claims
- Ondansetron Odt32 claims
- Sulfamethoxazole-Trimethoprim29 claims
- Prednisone28 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: $22.85
1 payment: food and beverage; the largest payer was Inari Medical, Inc. The 4,259 providers of this specialty with any payment received $1,273.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Brennan William Essex among 369 general practice physician records in Michigan
Brennan William Essex, PHARMD, MD is one of 369 general practice physician records with a practice address in Michigan. 49% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 72% of them.
- NPI issued2015 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 49% of these records are
- In the CMS Doctors and Clinicians fileNo · 27% of these records are
- Record last updated2021 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in Michigan
There are 369 general practice physician records in Michigan.
All 369 in Michigan → Every provider in Royal Oak → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Howard Korman, MDRoyal Oak, MI 480731467433599
- Michael Levin, M.D.Royal Oak, MI 480731285922187
- Zaid Mohsen, MDRoyal Oak, MI 480731396438990
- Masoud AhmadmehrabiSouthfield, MI 480751669595641
- Salam Brikho, M.D., M.S.Southfield, MI 480751437612579
- Daphine Brown, M.D.Southfield, MI 480751538246087
- Yelena Faynzilbert, DOMadison Hts, MI 480711063670750
- Elizer Garcia, M.D.Southfield, MI 480751174993174
Common questions
What is Brennan William Essex, PHARMD, MD's NPI number?
Brennan William Essex, PHARMD, MD's National Provider Identifier (NPI) is 1508239112, issued on Nov 4, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Brennan William Essex, PHARMD, MD located?
The NPPES record lists a practice address at 3601 W 13 Mile RD, Royal Oak, MI, 48073. Phone: (248) 898-5000. Providers update this record themselves, so call before visiting.
How can I verify Brennan William Essex, PHARMD, MD's license?
NPPES lists Michigan license number 4351048582, 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 Brennan William Essex, PHARMD, MD prescribe under Medicare Part D?
In 2024, Brennan William Essex, PHARMD, MD had 436 Medicare Part D claims for 215 beneficiaries; the average among general practice physician prescribers was 3,030. 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.