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

McMackin & Zimnoch, PC

Organization Internal Medicine Physician · NPI 1962667048

McMackin & Zimnoch, PC is an Internal Medicine Physician in Washington, District of Columbia. Licensed in District of Columbia. Registered with an NPI since 2008.

Licensed in
DC
In the registry since
2008
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

2311 M St NW Ste 302
Washington, DC 20037-1445
Phone: (202) 296-0043
Fax: (202) 296-1306
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 16615 (DC)

Record details

NPI number1962667048
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Christopher McMackin — President · (202) 296-0043
NPI enumeratedJuly 28, 2008
Last updated in NPPESOctober 15, 2013
Mailing address2311 M St Nw, Suite 302, Washington, DC 20037-1445

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