Cassandra Diaz De Leon, DNP, PMHNP-BC
NPI 1275036584 · Psychiatric/Mental Health Nurse Practitioner · Glendale, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cassandra Diaz De Leon, DNP, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner provider in Glendale, AZ (NPI 1275036584).
Provider details
- NPI number
- 1275036584
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, PMHNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- AP11155 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
157 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 89 | $109 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 47 | $61 |
| Psychiatric Services Complicated By Communication Factor90785 | 21 | $13 |
Typical Medicare-allowed amounts for these services range $13–$109 (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 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 122 | 20 |
| Trazodone Hcl | 115 | 26 |
| Quetiapine Fumarate | 111 | 14 |
| Duloxetine Hcl | 105 | 20 |
| Aripiprazole | 90 | 18 |
| Escitalopram Oxalate | 78 | 20 |
| Lamotrigine | 74 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,767 across 124 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
Additional practice locations (1)
- 6677 W Thunderbird Rd Ste I164Glendale, AZ 85306-3762Phone: (623) 878-2100
Registry dates
- Enumerated
- 2018-03-13
- Last updated
- 2026-04-22
- Certified
- 2026-04-22
Frequently asked questions
- What is Cassandra Diaz De Leon's NPI number?
- Cassandra Diaz De Leon's National Provider Identifier (NPI) is 1275036584, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cassandra Diaz De Leon's specialty?
- Cassandra Diaz De Leon is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Cassandra Diaz De Leon located?
- Cassandra Diaz De Leon's practice location on file with NPPES is 5720 W Peoria Ave Ste 101, Glendale, AZ 85302-1420.
- What is Cassandra Diaz De Leon's phone number?
- The practice phone number listed in the NPPES registry for Cassandra Diaz De Leon is (623) 878-2100.
- Does Cassandra Diaz De Leon accept Medicare?
- Cassandra Diaz De Leon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cassandra Diaz De Leon's NPI active?
- Yes — Cassandra Diaz De Leon's NPI (1275036584) is active in the NPPES registry as of the last update on 2026-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.