Maritess Zareno, NP
NPI 1588687784 · Primary Care Nurse Practitioner · Valencia, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maritess Zareno, NP is a Primary Care Nurse Practitioner provider in Valencia, CA (NPI 1588687784).
Provider details
- NPI number
- 1588687784
- Entity type
- Individual
- Primary specialty
- Primary Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 15838 (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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
157 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 60 | $81 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 47 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 28 | $118 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 22 | $51 |
Typical Medicare-allowed amounts for these services range $9–$118 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 51 | 29 |
| Amlodipine Besylate | 39 | 18 |
| Omeprazole | 38 | 22 |
| Fluticasone Propionate | 33 | 25 |
| Losartan Potassium | 30 | 18 |
| Levothyroxine Sodium | 28 | 17 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-26
- Last updated
- 2012-10-15
Frequently asked questions
- What is Maritess Zareno's NPI number?
- Maritess Zareno's National Provider Identifier (NPI) is 1588687784, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maritess Zareno's specialty?
- Maritess Zareno is listed in the NPPES registry with a primary specialty of Primary Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maritess Zareno located?
- Maritess Zareno's practice location on file with NPPES is 26357 Mcbean Pkwy, Valencia, CA 91355-4488.
- What is Maritess Zareno's phone number?
- The practice phone number listed in the NPPES registry for Maritess Zareno is (661) 222-2605.
- Does Maritess Zareno accept Medicare?
- Maritess Zareno is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maritess Zareno's NPI active?
- Yes — Maritess Zareno's NPI (1588687784) is active in the NPPES registry as of the last update on 2012-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.