MARY LOU LAO DAVID FNP-BC
NPI 1245467992
Nurse Practitioner - Primary Care in Aliso Viejo, CA
About Mary Lou Lao David Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY LOU LAO DAVID FNP-BC (NPI 1245467992) is an individual primary care provider in Aliso Viejo, California, licensed in California (18743) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mary Lou Lao David Fnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Lou David reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fountain Valley, CA 92708
- Reassigned Medicare billing, California enrollment
- 948 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 2
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 92656 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Mary Lou David's NPI number?
The NPI number for Mary Lou David is 1245467992. It was assigned to this individual provider in the NPPES registry on June 19, 2009.
Where is Mary Lou David located?
Mary Lou David practices at 22 Bluff Cove Dr, Aliso Viejo, CA 92656. The listed phone number is (949) 360-0587.
What is Mary Lou David's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Primary Care, with taxonomy code 363LP2300X.
Is Mary Lou David enrolled in Medicare?
Yes. Mary Lou David is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Lou David's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Lou David reassigns Medicare benefits to Memorialcare Medical Foundation (Fountain Valley, 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 Mary Lou David'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 Mary Lou David was last updated on October 26, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Mary Lou Lao David, FNP-BC · NPI 1245467992
Primary Care physician in Aliso Viejo, California. Individual provider, active in the CMS NPPES registry since June 19, 2009.
## Identity
- **NPI:** 1245467992 (Entity type: Individual)
- **Enumerated:** June 19, 2009
- **Primary specialty:** Nurse Practitioner - Primary Care · taxonomy 363LP2300X
- **State license:** 18743 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 22 BLUFF COVE DR, Aliso Viejo, CA 92656-8077
- **Phone:** (949) 360-0587
## 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:** Memorialcare Medical Foundation (NPI 1205167350, Fountain Valley, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 26, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1245467992) · Data from the CMS NPPES public registry.