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

John J. O'Connor MD PC

Organization Surgery Physician · NPI 1265603021

John J. O'Connor MD PC is a Surgery Physician in Rockville, 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

11125 Rockville Pike Ste 308
Rockville, MD 20852-3142
Phone: (301) 881-5167
Fax: (301) 881-3473
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence D0009499 (MD)

Record details

NPI number1265603021
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official John O'Connor — President · (301) 881-5167
NPI enumeratedMarch 19, 2008
Last updated in NPPESMarch 19, 2008
Mailing addressPo Box 341589, Bethesda, MD 20827-1589

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