Johana Marielos Tomassian, RN
Critical Care Medicine Registered Nurse · Riverside, CA
Johana Marielos Tomassian, RN is a critical care medicine registered nurse with a practice address in Riverside, California, and NPI 1992376859, issued on Jul 1, 2021. Check the license (California 765641, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Johana Marielos Tomassian
- Credential
- RN
- Primary taxonomy
- Critical Care Medicine Registered Nurse 163WC0200X
- License number
- 765641 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5549 Van Buren Blvd, Riverside, CA 92503
- Phone
- (951) 324-5901
- Enumerated
- Jul 1, 2021
- Record last updated
- Jul 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest critical care medicine registered nurse records → All 405 in California → Look up another NPI →
Also registered at 5549 Van Buren Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathleen Comer, MSN, FNP-BCNurse Practitioner1689778755
- Christine Duong, DNPNurse Practitioner1003350950
- Tedmund Po, M.D.Family Medicine Physician1518042167
- Mindy Richard, LCSWSocial Worker1730229162
Verify Johana Marielos Tomassian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 765641Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $701.61
9 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 91 providers of this specialty with any payment received $827.18 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Johana Marielos Tomassian among 405 critical care medicine registered nurse records in California
Johana Marielos Tomassian, RN is one of 405 critical care medicine registered nurse records with a practice address in California. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 33% of them.
- NPI issued2021 · 33% of these records are older, 63% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 4% of these records are
- Record last updated2021 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 163WC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine Registered Nurse providers in California
There are 405 critical care medicine registered nurse records in California.
All 405 in California → Every provider in Riverside → Critical Care Medicine Registered Nurse nationwide →
The 8 critical care medicine registered nurse records with the nearest ZIP codes
- Jamie Ardon, RNRiverside, CA 925011144103060
- Zachary Palasek, RNRiverside, CA 925011538956339
- Shannon Benson, RNRiverside, CA 925061619594363
- Justin Chao, RNRiverside, CA 925071851246714
- Jacinta Wainaina, RNHemet, CA 925441376057257
- Xavier Jimenez, RN, BSNMoreno Valley, CA 925551114849486
- Lucy Njuguna, RNMoreno Valley, CA 925551326411141
- Youssef Tawfik, RNPerris, CA 925701811858376
Common questions
What is Johana Marielos Tomassian, RN's NPI number?
Johana Marielos Tomassian, RN's National Provider Identifier (NPI) is 1992376859, issued on Jul 1, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Johana Marielos Tomassian, RN located?
The NPPES record lists a practice address at 5549 Van Buren Blvd, Riverside, CA, 92503. Phone: (951) 324-5901. Providers update this record themselves, so call before visiting.
How can I verify Johana Marielos Tomassian, RN's license?
NPPES lists California license number 765641, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.