MARIA ALEJANDRA TOBAR MD
NPI 1669092383
Emergency Medicine in Riverside, CA
About Maria Alejandra Tobar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIA ALEJANDRA TOBAR MD (NPI 1669092383) is an individual emergency medicine provider in Riverside, California, licensed in California (A190162) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Maria Alejandra Tobar Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Maria Tobar reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Riverside, CA 92501
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1740235258 (California)
- 2,323 clinicians in this Medicare group
Porterville, CA 93257
- Reassigned Medicare billing, California enrollment
- 19 clinicians in this Medicare group
Modesto, CA 95354
- Reassigned Medicare billing, California enrollment
- 180 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92501 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
RIVERSIDE, CA 92501
RIVERSIDE, CA 92501
RIVERSIDE, CA 92501
RIVERSIDE, CA 92501
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Maria Tobar's NPI number?
The NPI number for Maria Tobar is 1669092383. It was assigned to this individual provider in the NPPES registry on April 22, 2020.
Where is Maria Tobar located?
Maria Tobar practices at 4445 Magnolia Ave, Riverside, CA 92501. The listed phone number is (951) 788-3536.
What is Maria Tobar's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Maria Tobar enrolled in Medicare?
Yes. Maria Tobar is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Maria Tobar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maria Tobar reassigns Medicare benefits to 3 organizations: Cep America - California (Riverside, CA), Central Valley Emergency Medicine (Porterville, CA) and American Specialty Physicians Group Inc (Modesto, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Maria Tobar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Maria Tobar was last updated on December 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Maria Alejandra Tobar, MD · NPI 1669092383
Emergency Medicine physician in Riverside, California. Individual provider, active in the CMS NPPES registry since April 22, 2020.
## Identity
- **NPI:** 1669092383 (Entity type: Individual)
- **Enumerated:** April 22, 2020
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A190162 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4445 MAGNOLIA AVE, Riverside, CA 92501-4135
- **Phone:** (951) 788-3536
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Cep America - California (NPI 1386750578, Riverside, CA); Central Valley Emergency Medicine (NPI 1336956275, Porterville, CA); American Specialty Physicians Group Inc (NPI 1164363024, Modesto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Diego School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** December 20, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1669092383) · Data from the CMS NPPES public registry.