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

Cook & SIU PC

Organization Internal Medicine Physician · NPI 1780852129

Cook & SIU PC is an Internal Medicine Physician in Waldorf, Maryland. Licensed in Maryland. Registered with an NPI since 2008.

Licensed in
MD
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

3450 Old Washington Rd Ste 103
Waldorf, MD 20602-3249
Phone: (301) 472-4290
Fax: (240) 607-3609
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence D0063483 (MD)

Record details

NPI number1780852129
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Richard Cook — Owner · (301) 472-9240
Other names Richard E Cook, Md
NPI enumeratedFebruary 20, 2008
Last updated in NPPESJuly 13, 2024
Certification dateJuly 13, 2024
Mailing addressPo Box 215, Bryantown, MD 20617-0215

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