John S. Zazaian, DO
Internal Medicine Physician · Waterford, MI
John S. Zazaian, DO is an internal medicine physician with a practice address in Waterford, Michigan, and NPI 1871581934, issued on Oct 12, 2005. Check the license (Michigan 5101008304, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- John S. Zazaian
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 5101008304 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1012 W Huron St, Waterford, MI 48328
- Phone
- (248) 681-1880
- Enumerated
- Oct 12, 2005
- Record last updated
- Aug 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (248) 681-3698
- Medicaid ID
- 165392311 MI
- Medicare enrollment
- Enrolled (PECOS I20040303000023); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 1982
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 1012 W Huron St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelly BackersPhysician Assistant1205204385
- Robert Oshnock, PA-CMedical Physician Assistant1912541681
- Andrew Zazaian, DOInternal Medicine Physician1982692273
Verify John S. Zazaian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101008304Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% more Medicare Part D claims than the average internal medicine physician in 2024
4,622 Medicare Part D claims for 370 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 116 claims were for opioids.
Most prescribed
- Amlodipine Besylate288 claims
- Atorvastatin Calcium285 claims
- Lisinopril201 claims
- Metoprolol Succinate132 claims
- Levothyroxine Sodium128 claims
- Metformin Hcl127 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: $120.51
7 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through 2 group practices
- Apollo Hospitalist GroupGarden City, MI
- Michigan Internal Medicine Associates,p.c.Waterford, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John S. Zazaian among 5,735 internal medicine physician records in Michigan
John S. Zazaian, DO is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% 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, 90% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1982 · median 2006 among the 3,564 with a school on file
- Record last updated2020 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
20 internal medicine physician records list a practice address in Waterford
They are 20 of the 1,086 NPPES records with a practice address in Waterford, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Waterford → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Faris Atchoo, DOWaterford, MI 483281467530428
- Leslie Caren, M.D.Waterford, MI 483281649288960
- Paunel Grivej, MDWaterford, MI 483281215986682
- Mohamad Hatahet, MDWaterford, MI 483281952364242
- Elyse Hewitt, D.O.Waterford, MI 483281083006407
- Nadia Sadik, M.D.Waterford, MI 483281831289743
- Syeda Salari, MDWaterford, MI 483281407506686
- Andrew Zazaian, DOWaterford, MI 483281982692273
Common questions
What is John S. Zazaian, DO's NPI number?
John S. Zazaian, DO's National Provider Identifier (NPI) is 1871581934, issued on Oct 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John S. Zazaian, DO located?
The NPPES record lists a practice address at 1012 W Huron St, Waterford, MI, 48328. Phone: (248) 681-1880. Providers update this record themselves, so call before visiting.
How can I verify John S. Zazaian, DO's license?
NPPES lists Michigan license number 5101008304, 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 John S. Zazaian, DO prescribe under Medicare Part D?
In 2024, John S. Zazaian, DO had 4,622 Medicare Part D claims for 370 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.