Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Michael Guerena, MD
Specialist in Oceanside, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1841222171
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Registry record
Entity type Individual (Type 1)
Name Michael Guerena
Credential MD
Sex Male
Practice address 3609 Vista Way, Oceanside, CA, 92056
Phone (760) 637-2500
Fax (760) 637-2501
Enumeration date Jul 7, 2006
Last updated in NPPES May 1, 2017
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00G809260 | Medicaid | CA | - |
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.
Frequently asked questions
Where does Michael Guerena practice?
The practice location on file with NPPES is in Oceanside, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michael Guerena?
The National Provider Identifier (NPI) for Michael Guerena is 1841222171, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Robert Shapiro Urology Physician · Oceanside, CA NPI 1033198320 North Coast Urology Medical Associates Inc Specialist · Oceanside, CA NPI 1548292881 Bradley Frasier Specialist · Oceanside, CA NPI 1013932045 Caroline Vilchis Urology Physician · Oceanside, CA NPI 1083810410 Sjc Medical Corporation Family Medicine Physician · Oceanside, CA NPI 1437466521
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-05-01.