Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Mazen Najjar, MD

Individual provider Internal Medicine Physician · NPI 1245342393

Dr. Mazen Najjar, MD is an Infectious Disease in Grand Blanc, Michigan. Qualified in 1991, 35 years ago. Practices with Najjar Infectious Disease PC, a 2-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Michigan.

Years since qualifying
35
Licensed in
MI
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4644 Genesys Pkwy
Grand Blanc, MI 48439-8067
Phone: (810) 606-7125
Fax: (810) 606-7131
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 4301087544 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4301087544 (MI)

Record details

NPI number1245342393
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 31, 2006
Last updated in NPPESOctober 5, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINFECTIOUS DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Najjar Infectious Disease Pc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Grand Blanc