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

Mark E Bernthal, OD

Individual provider Optometrist · NPI 1811991391

Mark E Bernthal, OD is an Optometry in St Clair Shores, Michigan. Graduated from Illinois College of Optometry at Chicago in 1979, 47 years ago. Practices with Richard C Mertz Jr MD PC, a 5-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
47
Trained at
Illinois College of Optometry at Chicago
Licensed in
MI
In the registry since
2005
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

21711 Greater Mack Ave
St Clair Shores, MI 48080-2418
Phone: (586) 774-0393
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 4901002685 (MI)

Record details

NPI number1811991391
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedJune 13, 2005
Last updated in NPPESJune 11, 2008
Mailing address21711 Greater Mack Ave, St Clair Shores, MI 48080-2418

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolILLINOIS COLLEGE OF OPTOMETRY AT CHICAGO
Graduated 1979 (47 years in practice)
Group practice Richard C Mertz Jr Md Pc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in St Clair Shores