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

Martin M Nielsen MD a Med Corp

Organization Pulmonary Disease Physician · NPI 1205860491

Martin M Nielsen MD a Med Corp is a Pulmonary Disease Physician in Oceanside, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
Corp — Corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

3231 Waring Ct Ste L
Oceanside, CA 92056-4510
Phone: (760) 758-7474
Fax: (760) 758-7362
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence G25528 (CA)

Record details

NPI number1205860491
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Martin Nielsen — President · (760) 758-7474
NPI enumeratedJuly 11, 2006
Last updated in NPPESSeptember 4, 2015
Mailing address3231 Waring Ct Ste L, Oceanside, CA 92056-4510

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