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DIANA HELEN LOPEZ PMHNP
NPI 1528648284
Nurse Practitioner - Psychiatric/Mental Health in Monrovia, CA

Active since April 08, 2021PECOS Enrolled
50 W LEMON AVE STE 31, MONROVIA, CA 91016(323) 410-0021(323) 410-2001 Get Directions Write a Review

NPPES record last updated: September 13, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 29, 2023, Aug 17, 2022, Aug 12, 2022 and 1 more (4 updates tracked since 2021).

About Diana Helen Lopez Pmhnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DIANA HELEN LOPEZ PMHNP (NPI 1528648284) is an individual psychiatric/mental health provider in Monrovia, California, licensed in California (95022261) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and maintains a secondary practice location in Agoura Hills.

NPPES Registry Identity

NPI1528648284
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameDIANA HELEN LOPEZCredential: PMHNP
Location Address50 W LEMON AVE STE 31Monrovia, CA 91016-6152
Mailing Address50 W Lemon Ave Ste 31Monrovia, CA 91016-6152 · (323) 410-0021
Phone(323) 410-0021
Fax(323) 410-2001
Sole ProprietorYes
Enumeration DateApril 8, 2021
Last NPPES UpdateSeptember 13, 20234 updates tracked since enumeration
NPPES CertifiedSeptember 13, 2023
✔ NPI 1528648284 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in CA · 95022261
50 W LEMON AVE STE 31, Monrovia, CA 91016
Open in Google Maps ↗

Secondary Practice Location 1

Location 130495 Canwood St Ste 101Agoura Hills, CA 91301-4331 · Phone (818) 707-7366

Other Identifiers 1

Other95022261CA · Psychiatric Mental Health Nurse Practitioner

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diana Helen Lopez Pmhnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Diana Lopez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ehab Yacoub MD Inc.
26 mi
Child & Adolescent Psychiatry
1225 W 190TH ST STE 280
Gardena, CA 90248
  • Reassigned Medicare billing, California enrollment
  • 375 clinicians in this Medicare group
NPI 1417373713 (310) 515-8113
Family Psychological Services Inc
45 mi
Psychologist
30495 CANWOOD ST STE 101
Agoura Hills, CA 91301
  • Reassigned Medicare billing, California enrollment
  • 29 clinicians in this Medicare group
NPI 1881746733 (818) 707-7366

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91016 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LOPEZ PSYCHIATRIC SERVICES LLC
Psychiatry & Neurology (Psychiatry)
50 W LEMON AVE STE 31
MONROVIA, CA 91016
Los Angeles County (323) 410-0021

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diana Lopez's NPI number?

The NPI number for Diana Lopez is 1528648284. It was assigned to this individual provider in the NPPES registry on April 8, 2021.

Where is Diana Lopez located?

Diana Lopez practices at 50 W Lemon Ave Ste 31, Monrovia, CA 91016. The listed phone number is (323) 410-0021.

What is Diana Lopez's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Diana Lopez enrolled in Medicare?

Yes. Diana Lopez is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Diana Lopez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Lopez reassigns Medicare benefits to 2 organizations: Ehab Yacoub MD Inc. (Gardena, CA) and Family Psychological Services Inc (Agoura Hills, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Diana Lopez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Diana Lopez was last updated on September 13, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.