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

Dr. John Douglas Coalter, OD

Individual provider Optometrist · NPI 1942306311

Dr. John Douglas Coalter, OD is an Optometry in Michigan City, Indiana. Qualified in 1986, 40 years ago. Practices with Boling Vision Center LLC, a 12-clinician group and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
40
Licensed in
IN
In the registry since
2006
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

3701 Franklin St
Michigan City, IN 46360-7310
Phone: (219) 872-8844
Fax: (219) 874-2872
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 18002563A 18002563B (IN)

Record details

NPI number1942306311
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedSeptember 15, 2006
Last updated in NPPESOctober 25, 2021
Certification dateOctober 25, 2021

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolOTHER
Graduated 1986 (40 years in practice)
Group practice Boling Vision Center Llc — 12 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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