Quick answers
- Does Maria Zarina Diao accept Medicare assignment?
- Yes. Medicare's clinician data says Maria Zarina Diao accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Maria Zarina Diao see?
- In 2024, CMS data shows 273 Original Medicare patients and 1,352 services for Maria Zarina Diao. This counts Original Medicare only and measures volume, not quality.
- What is Maria Zarina Diao's NPI number?
- 1861732976. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Maria Zarina Diao, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 273 |
|---|---|
| Services billed to Medicare | 1,352 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 63 |
Most frequent services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)402 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)312 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)260 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)180 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)126 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- Anxiety70%
- Depression68%
- High cholesterol67%
- Arthritis49%
- Diabetes41%
Hospitals where Maria Zarina Diao works
Medicare's Facility Affiliation Data lists Maria Zarina Diao at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Sunrise Hospital and Medical CenterLas Vegas, NV · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 290003
- University Medical CenterLas Vegas, NV · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 290007
Practice locations
Addresses where Maria Zarina Diao is enrolled with Medicare (CMS data updated October 2, 2026).
- 10401 W Charleston BlvdLas Vegas, NV 89135 (702) 960‑4312
- 3247 S Maryland PkwyLas Vegas, NV 89109 (702) 852‑6633
- 601 S Rancho Dr, Suite D34Las Vegas, NV 89106
Group practices
Medicare enrollment lists Maria Zarina Diao as a member of these groups (CMS data updated October 2, 2026).
- Behavioral Health Institute Inc (Singh) PC13 clinicians in the group
- Geriatric Medical Associates of Nevada LLC3 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Las Vegas
Clinicians with the same Medicare primary specialty in Las Vegas, NV — not a recommendation.
Other clinicians in Behavioral Health Institute Inc (Singh) PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861732976 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians