Provider Profile
Maritess M. Zareno, NP
Unclaimed ProfileAbout Maritess Zareno
Listed in the NPI registry as a nurse practitioner, Maritess M. Zareno, NP practices in Valencia, CA. Maritess graduated from University of California, Geffen School of Medicine in 2005. Maritess is also listed as specializing in nurse practitioner — primary care. According to Medicare claims data, Maritess cared for 141 Medicare patients across 157 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, insertion of needle into vein for collection of blood sample, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1588687784 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (661) 222-2605
- Email not available
Practice Locations
26357 MCBEAN PKWY
Valencia, CA 91355
Procedures Most Often Billed to Medicare
157 services · 141 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
47 | As often as other peers in Nurse Practitioner |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
60 | As often as other peers in Nurse Practitioner |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
28 | Less often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
22 | As often as other peers in Nurse Practitioner |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nurse practitioners at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 31 related providers in 4 groups
Other nurse practitioners in Valencia 8
Same specialty, same city.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at University of California, Geffen School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Maritess M. Zareno?
Maritess M. Zareno is a nurse practitioner in Valencia, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Maritess M. Zareno's address?
Maritess M. Zareno is listed at 26357 Mcbean Pkwy, Valencia, CA 91355. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Maritess M. Zareno?
The number on file is (661) 222-2605. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Maritess M. Zareno's NPI number?
Maritess M. Zareno's National Provider Identifier is 1588687784. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Maritess M. Zareno train?
Maritess M. Zareno attended University of California, Geffen School of Medicine, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Maritess M. Zareno been practicing?
Maritess M. Zareno has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What procedures does Maritess M. Zareno perform?
According to Medicare billing data, Maritess M. Zareno performs procedures including insertion of needle into vein for collection of blood sample, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Maritess M. Zareno confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Maritess M. Zareno. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.