NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael John Rensink, MD

Otolaryngology Physician in Chula Vista, CA · enumerated 2006.

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

National Provider Identifier

1629001177

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Michael John Rensink
Credential MD
Sex Male
Practice address 752 Medical Center Ct, Suite 101, Chula Vista, CA, 91911
Phone (619) 482-0565
Fax (619) 482-2775
Enumeration date Jul 8, 2006
Last updated in NPPES Apr 15, 2013

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License G20200 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Where does Michael Rensink practice?
The practice location on file with NPPES is in Chula Vista, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michael Rensink?
The National Provider Identifier (NPI) for Michael Rensink is 1629001177, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-15.