Maryann Siu Ornelas, NP
- Hospital affiliations
- 1
- Industry payments
- $415
- Year NPI issued
- 2019
- Practice address
- 5901 E. Seventh Street, Long Beach, CA 90822
- Practice phone
- Call (562) 826-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Maryann Siu Ornelas' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Maryann Siu Ornelas is a primary care nurse practitioner in Long Beach, California
Maryann Siu Ornelas practices at Tibor Rubin VA Medical Center in Long Beach, California, part of Veterans Health Administration.
Maryann Siu Ornelas' NPI, 1205495033, was assigned on June 5, 2019.
- NPI
- 1205495033NPI Registry (opens in a new tab)
- NPI enumeration date
- June 5, 2019
- NPI status
- Active
- Practice phone
- (562) 826-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Maryann Siu Ornelas practices at Tibor Rubin VA Medical Center in Long Beach, California
Maryann Siu Ornelas' primary practice is Tibor Rubin VA Medical Center, at 5901 E. Seventh Street, Long Beach, CA 90822 in Los Angeles County. The practice phone is (562) 826-8000.
- Tibor Rubin VA Medical Center5901 E. Seventh Street, Long Beach, CA 90822 · Los Angeles CountyPhone(562) 826-8000
Source: Dmand AI Affiliation Data
Maryann Siu Ornelas is affiliated with 1 site of care
Maryann Siu Ornelas' primary practice is Tibor Rubin VA Medical Center in Long Beach, California, part of Veterans Health Administration. Maryann Siu Ornelas' employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Maryann Siu Ornelas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Maryann Siu Ornelas practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tibor Rubin VA Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Maryann Siu Ornelas is one of 860 primary care nurse practitioners in California
Primary care is Maryann Siu Ornelas' primary specialty in the NPI Registry, under taxonomy code 363LP2300X.
Specialties and state licenses
- Primary care nurse practitionerPrimary
Primary care nurse practitioners near Maryann Siu Ornelas
Counts of primary care nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Maryann Siu Ornelas' patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Maryann Siu Ornelas' median patient age at 50, with 33% women.
Maryann Siu Ornelas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women33%
- Men67%
Source: Dmand AI Patient Panel Data
Maryann Siu Ornelas received $415 in industry payments in 2025
CMS Open Payments shows 8 general payments to Maryann Siu Ornelas from 2 drug and device companies in 2025. Food and beverage make up the largest share, 68% of the total. Boston Scientific Corporation paid the most, $368.
General payments to Maryann Siu Ornelas by kind, 2025 to 2025
- Food and beverage$28468%
- Travel and lodging$13132%
Companies that paid Maryann Siu Ornelas the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Maryann Siu Ornelas's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Maryann Siu Ornelas
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Maryann Siu Ornelas' NPI number?
Maryann Siu Ornelas' NPI number is 1205495033. It was assigned on June 5, 2019, and it is active in the NPI Registry.
What does Maryann Siu Ornelas specialize in?
Maryann Siu Ornelas is a primary care nurse practitioner in Long Beach, California. The primary specialty in the NPI Registry is Primary Care Nurse Practitioner (taxonomy code 363LP2300X).
Where does Maryann Siu Ornelas practice?
Maryann Siu Ornelas practices at 5901 E. Seventh Street, Long Beach, CA 90822. Maryann Siu Ornelas' primary practice is Tibor Rubin VA Medical Center in Long Beach, California, part of Veterans Health Administration.
What is Maryann Siu Ornelas' office phone number?
The practice phone on file for Maryann Siu Ornelas is (562) 826-8000.
Which hospitals is Maryann Siu Ornelas affiliated with?
Maryann Siu Ornelas practices at Tibor Rubin VA Medical Center in Long Beach, California.
Has Maryann Siu Ornelas received payments from drug or device companies?
CMS Open Payments shows $415 in general payments to Maryann Siu Ornelas from 2 companies from 2025 to 2025. The largest total came from Boston Scientific Corporation.
How long has Maryann Siu Ornelas been practicing?
Maryann Siu Ornelas' NPI was assigned in 2019.
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