ANN LORRAINE MERCADO FNP
NPI 1306294574
Nurse Practitioner - Family in Los Angeles, CA
About Ann Lorraine Mercado Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANN LORRAINE MERCADO FNP (NPI 1306294574) is an individual family provider in Los Angeles, California, licensed in California (95004168) and active in the NPI registry since May 2016. She is enrolled in Medicare PECOS.
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 (PECOS)
Ann Lorraine Mercado Fnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Ann Lorraine Mercado reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90037
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: St. John's Community Health
- 404 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 90037 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.
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 Ann Lorraine Mercado's NPI number?
The NPI number for Ann Lorraine Mercado is 1306294574. It was assigned to this individual provider in the NPPES registry on May 29, 2016.
Where is Ann Lorraine Mercado located?
Ann Lorraine Mercado practices at 808 W 58th St, Los Angeles, CA 90037. The listed phone number is (323) 541-1600.
What is Ann Lorraine Mercado's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Ann Lorraine Mercado enrolled in Medicare?
Yes. Ann Lorraine Mercado is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Ann Lorraine Mercado's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann Lorraine Mercado reassigns Medicare benefits to St. Johns Community Health (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 Ann Lorraine Mercado'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 Ann Lorraine Mercado was last updated on February 18, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Ann Lorraine Mercado, FNP · NPI 1306294574
Family physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since May 29, 2016.
## Identity
- **NPI:** 1306294574 (Entity type: Individual)
- **Enumerated:** May 29, 2016
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95004168 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 808 W 58TH ST, Los Angeles, CA 90037-3632
- **Phone:** (323) 541-1600
## 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:** St. Johns Community Health (NPI 1073363768, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 18, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1306294574) · Data from the CMS NPPES public registry.