Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Martina Andrea Seemann, DDS

Dentist in Atascadero, CA · enumerated 2008 · practices at Advanced Obgyn.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1881871028

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Martina Andrea Seemann

Credential DDS

Sex Female

Practice address Atascadero, CA, 93422

Phone (805) 466-0557

Enumeration date Jan 30, 2008

Last updated in NPPES Jan 30, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

122300000X Dentist Dental Providers · License 45011 (CA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Martina Seemann's NPI record?

Cross-check NPI 1881871028 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1881871028 active?

Yes, as of the latest NPPES snapshot, NPI 1881871028 is active (record last updated 2008-01-30).

Other providers at this practice address

Browse all →

Advanced Obgyn Obstetrics & Gynecology Physician · Atascadero, CA NPI 1699479808

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-30.