SONIA CRISTINA MAYS CNM, WHNP
NPI 1053627778
Midwife in Pasadena, CA
About Sonia Cristina Mays Cnm, Whnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SONIA CRISTINA MAYS CNM, WHNP (NPI 1053627778) is an individual midwife in Pasadena, California, licensed in California (1909) and active in the NPI registry since August 2010. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
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)
Sonia Cristina Mays Cnm, Whnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Sonia Mays reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90041
- Reassigned Medicare billing, California enrollment
- 13,921 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.
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.
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 Sonia Mays's NPI number?
The NPI number for Sonia Mays is 1053627778. It was assigned to this individual provider in the NPPES registry on August 19, 2010. The provider is also known as Sonia Cristina Halmagean Cnm, Whnp.
Where is Sonia Mays located?
Sonia Mays practices at 393 E Walnut St, Pasadena, CA 91188. The listed phone number is (626) 405-3224.
What is Sonia Mays's specialty?
The primary specialty registered for this NPI is Midwife with taxonomy code 176B00000X.
Is Sonia Mays enrolled in Medicare?
Yes. Sonia Mays is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Sonia Mays's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sonia Mays reassigns Medicare benefits to Southern California Permanente Medical Group (Los Angeles, CA). The 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 Sonia Mays'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 Sonia Mays was last updated on December 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.