Maria Ruiz, APRN
NPI 1821575929 · Psychiatric/Mental Health Nurse Practitioner · Windsor, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Ruiz, APRN is a Psychiatric/Mental Health Nurse Practitioner provider in Windsor, CT (NPI 1821575929).
Provider details
- NPI number
- 1821575929
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 007529 (CT)
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
7 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
51 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 | 51 | $83 |
Typical Medicare-allowed amounts for these services range $83–$83 (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 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Mirtazapine | 197 | 28 |
| Trazodone Hcl | 190 | 32 |
| Buspirone Hcl | 149 | 28 |
| Clonazepam | 147 | 24 |
| Quetiapine Fumarate | 145 | 23 |
| Sertraline Hcl | 121 | 19 |
| Hydroxyzine Hcl | 90 | 18 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-07-23
- Last updated
- 2026-03-18
- Certified
- 2026-03-18
Frequently asked questions
- What is Maria Ruiz's NPI number?
- Maria Ruiz's National Provider Identifier (NPI) is 1821575929, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Ruiz's specialty?
- Maria Ruiz is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maria Ruiz located?
- Maria Ruiz's practice location on file with NPPES is 378 Windsor Ave, Windsor, CT 06095-4551.
- What is Maria Ruiz's phone number?
- The practice phone number listed in the NPPES registry for Maria Ruiz is (860) 219-2095.
- Does Maria Ruiz accept Medicare?
- Maria Ruiz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Ruiz's NPI active?
- Yes — Maria Ruiz's NPI (1821575929) is active in the NPPES registry as of the last update on 2026-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.