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

Mark A. Koenig, DO, PC

Organization Primary Care Clinic/Center · NPI 1265708374

Mark A. Koenig, DO, PC is a Primary Care Clinic/Center in Middle Island, New York. Licensed in New York. Registered with an NPI since 2012.

Licensed in
NY
In the registry since
2012
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

606 Middle Country Rd Ste 1
Middle Island, NY 11953-2556
Phone: (631) 924-5060
Fax: (631) 924-8690
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Primary Care Clinic/Center (primary) Taxonomy 261QP2300X · Licence 174687 (NY)

Record details

NPI number1265708374
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Koenig — President · (631) 924-5060
NPI enumeratedMarch 23, 2012
Last updated in NPPESMarch 23, 2012
Mailing address606 Middle Country Rd, Suite 1, Middle Island, NY 11953-2556

Other providers in Middle Island