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

Mark R Northfield, MD

Organization Specialist · NPI 1609051572

Mark R Northfield, MD is a Specialist in Petaluma, California. Licensed in California. Registered with an NPI since 2008.

Licensed in
CA
In the registry since
2008

Practice location Address checks out

1496 Professional Dr Ste 601
Petaluma, CA 94954-6698
Phone: (707) 778-1131
Fax: (707) 778-3818
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence G77114 (CA)

Record details

NPI number1609051572
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Lee Brill — Receptionist · (707) 778-1131
NPI enumeratedJanuary 9, 2008
Last updated in NPPESJanuary 9, 2008
Mailing address1496 Professional Dr, Suite 601, Petaluma, CA 94954-6698

Other providers in Petaluma