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

John M Dalena and Darren R Blumberg MD LLC

Organization Gastroenterology Physician · NPI 1033255096

John M Dalena and Darren R Blumberg MD LLC is a Gastroenterology Physician in Cedar Knolls, New Jersey. Registered with an NPI since 2007.

In the registry since
2007
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

65 Ridgedale Ave
Cedar Knolls, NJ 07927-1313
Phone: (973) 401-0500
Fax: (973) 401-9306
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X

Record details

NPI number1033255096
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Elsie Duque — Office Administrator · (973) 401-0500
NPI enumeratedJanuary 29, 2007
Last updated in NPPESJune 11, 2013
Mailing address65 Ridgedale Ave, Cedar Knolls, NJ 07927-1313