Monica Ann Horstman, CRNFA
Registered Nurse First Assistant · Rancho Santa Margarita, CA
Monica Ann Horstman, CRNFA is a registered nurse first assistant with a practice address in Rancho Santa Margarita, California, and NPI 1225164197, issued on Feb 26, 2007. Check the license (California 415769, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Monica Ann Horstman
- Credential
- CRNFA
- Primary taxonomy
- Registered Nurse First Assistant 163WR0006X
- License number
- 415769 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8 Saltillo, Rancho Santa Margarita, CA 92688
- Phone
- (949) 858-1126
- Enumerated
- Feb 26, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest registered nurse first assistant records → All 303 in California → Look up another NPI →
Also registered at 8 Saltillo
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cristina Gamarnik, MA., CCC-SLPSpeech-Language Pathologist1497211916
Verify Monica Ann Horstman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 415769Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Monica Ann Horstman among 303 registered nurse first assistant records in California
Monica Ann Horstman, CRNFA is one of 303 registered nurse first assistant records with a practice address in California. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 10% of them.
- NPI issued2007 · 10% of these records are older, 68% newer
- In a Medicare fileNo · 3% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% of these records are
- Record last updated2007 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 163WR0006X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Registered Nurse First Assistant providers in California
There are 303 registered nurse first assistant records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 303 in California → Every provider in Rancho Santa Margarita → Registered Nurse First Assistant nationwide →
The 8 registered nurse first assistant records with the nearest ZIP codes
- Yuching Ma, RNFAMission Viejo, CA 926911215063540
- Denise Mazzarella, CRNFAMission Viejo, CA 926911114062627
- Christian McIlwainMission Viejo, CA 926911316787690
- Kristi White, RNMission Viejo, CA 926911700073517
- Rene DarlingMission Viejo, CA 926921689841306
- Leslie Jansen, RNFAMission Viejo, CA 926921992726715
- Kimberly Frank, RNFALadera Ranch, CA 926941730499328
- William TeimooriTrabuco Canyon, CA 926791669342093
Common questions
What is Monica Ann Horstman, CRNFA's NPI number?
Monica Ann Horstman, CRNFA's National Provider Identifier (NPI) is 1225164197, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Monica Ann Horstman, CRNFA located?
The NPPES record lists a practice address at 8 Saltillo, Rancho Santa Margarita, CA, 92688. Phone: (949) 858-1126. Providers update this record themselves, so call before visiting.
How can I verify Monica Ann Horstman, CRNFA's license?
NPPES lists California license number 415769, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.