Marissa Guerrero, MSN, FNP-BC
NPI 1548746548 · Family Nurse Practitioner · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Guerrero, MSN, FNP-BC is a Family Nurse Practitioner provider in Oak Lawn, IL (NPI 1548746548).
Provider details
- NPI number
- 1548746548
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 209017789 (IL)
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
7 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 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 154 | 52 |
| Amlodipine Besylate | 70 | 30 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 53 | 33 |
| Losartan Potassium | 51 | 20 |
| Metformin Hcl | 43 | 15 |
| Metoprolol Succinate | 41 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$824 across 43 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
- 2018-07-13
- Last updated
- 2018-07-13
Frequently asked questions
- What is Marissa Guerrero's NPI number?
- Marissa Guerrero's National Provider Identifier (NPI) is 1548746548, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Guerrero's specialty?
- Marissa Guerrero is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marissa Guerrero located?
- Marissa Guerrero's practice location on file with NPPES is 10837 S Cicero Ave Ste 320, Oak Lawn, IL 60453-6459.
- What is Marissa Guerrero's phone number?
- The practice phone number listed in the NPPES registry for Marissa Guerrero is (708) 636-1601.
- Does Marissa Guerrero accept Medicare?
- Marissa Guerrero is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Guerrero's NPI active?
- Yes — Marissa Guerrero's NPI (1548746548) is active in the NPPES registry as of the last update on 2018-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.