Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

John J. O'Connor MD PC

Organization Surgery Physician · NPI 1265603021

John J. O'Connor MD PC provides Surgery Physician services 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 Not confirmed with CMS for 18 years — call before visiting
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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