Marissa Marzella, FNP
NPI 1811772874 · Family Nurse Practitioner · Phoenix, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Marzella, FNP is a Family Nurse Practitioner provider in Phoenix, AZ (NPI 1811772874).
Provider details
- NPI number
- 1811772874
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 307586 (AZ)
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
2 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 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 144 | 111 |
| Amlodipine Besylate | 111 | 88 |
| Losartan Potassium | 84 | 66 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 64 | 38 |
| Omeprazole | 58 | 41 |
| Levothyroxine Sodium | 53 | 41 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$406 across 9 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
- 2023-08-29
- Last updated
- 2024-12-28
- Certified
- 2024-12-28
Frequently asked questions
- What is Marissa Marzella's NPI number?
- Marissa Marzella's National Provider Identifier (NPI) is 1811772874, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Marzella's specialty?
- Marissa Marzella is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marissa Marzella located?
- Marissa Marzella's practice location on file with NPPES is 8306 N 8th St, Phoenix, AZ 85020-3444.
- What is Marissa Marzella's phone number?
- The practice phone number listed in the NPPES registry for Marissa Marzella is (480) 208-4409.
- Does Marissa Marzella accept Medicare?
- Marissa Marzella is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Marzella's NPI active?
- Yes — Marissa Marzella's NPI (1811772874) is active in the NPPES registry as of the last update on 2024-12-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.