Margaret Guerrero, NP
NPI 1790856680 · Nurse Practitioner · Anaheim, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Guerrero, NP is a Nurse Practitioner provider in Anaheim, CA (NPI 1790856680).
Provider details
- NPI number
- 1790856680
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- NP11576 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 454 | 74 |
| Pen Needle, Diabeticbrand: Nano 2nd Gen Pen Needle | 277 | 118 |
| Insulin Lisprobrand: Humalog Kwikpen U-100 | 256 | 99 |
| Insulin Glargine-Yfgn | 226 | 96 |
| Insulin Lisprobrand: Humalog | 222 | 77 |
| Insulin Regular, Humanbrand: Humulin R | 116 | 47 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$99 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-13
- Last updated
- 2021-12-16
- Certified
- 2021-12-16
Frequently asked questions
- What is Margaret Guerrero's NPI number?
- Margaret Guerrero's National Provider Identifier (NPI) is 1790856680, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Guerrero's specialty?
- Margaret Guerrero is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margaret Guerrero located?
- Margaret Guerrero's practice location on file with NPPES is 1188 N Euclid St, Anaheim, CA 92801-1900.
- What is Margaret Guerrero's phone number?
- The practice phone number listed in the NPPES registry for Margaret Guerrero is (888) 988-2800.
- Does Margaret Guerrero accept Medicare?
- Margaret Guerrero is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Guerrero's NPI active?
- Yes — Margaret Guerrero's NPI (1790856680) is active in the NPPES registry as of the last update on 2021-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.