DR. ALLISON ERIN LOWE GUIMERA M.D.
NPI 1841518990
Pediatrics in Porter Ranch, CA
About Dr. Allison Erin Lowe Guimera M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALLISON ERIN LOWE GUIMERA M.D. (NPI 1841518990) is an individual pediatrics provider in Porter Ranch, California, licensed in California (A120463) and active in the NPI registry since May 2010. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Allison Erin Lowe Guimera M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Allison Guimera reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90095
- Reassigned Medicare billing, California enrollment
- 1,766 clinicians in this Medicare group
Los Angeles, CA 90095
- Reassigned Medicare billing, California enrollment
- 323 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91326 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.
PORTER RANCH, CA 91326
PORTER RANCH, CA 91326
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 Allison Guimera's NPI number?
The NPI number for Allison Guimera is 1841518990. It was assigned to this individual provider in the NPPES registry on May 13, 2010. The provider is also known as Allison Erin Lowe.
Where is Allison Guimera located?
Allison Guimera practices at 19950 Rinaldi St Suite 300, Porter Ranch, CA 91326. The listed phone number is (818) 271-2400.
What is Allison Guimera's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Allison Guimera enrolled in Medicare?
Yes. Allison Guimera is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Allison Guimera's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allison Guimera reassigns Medicare benefits to 2 organizations: The Regents Of The University Of California (Los Angeles, CA) and Uc Regents (Los Angeles, 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 Allison Guimera'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 Allison Guimera was last updated on June 1, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Dr. Allison Erin Lowe Guimera, M.D. · NPI 1841518990
Pediatrics physician in Porter Ranch, California. Individual provider, active in the CMS NPPES registry since May 13, 2010.
## Identity
- **NPI:** 1841518990 (Entity type: Individual)
- **Enumerated:** May 13, 2010
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A120463 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 19950 RINALDI ST, SUITE 300, Porter Ranch, CA 91326-4141
- **Phone:** (818) 271-2400
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The Regents Of The University Of California (NPI 1235107566, Los Angeles, CA); Uc Regents (NPI 1982667663, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 1, 2016
---
Source: [NPI Profile](https://npiprofile.com/npi/1841518990) · Data from the CMS NPPES public registry.