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

Martin M Nielsen MD a Med Corp

Organization Pulmonary Disease Physician · NPI 1205860491

Martin M Nielsen MD a Med Corp provides Pulmonary Disease Physician services 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 Not confirmed with CMS for 11 years — call before visiting
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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