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MARISSA AILLAUD M.D.
NPI 1699090894
Student in an Organized Health Care Education/Training Program in Redwood City, CA

Active since March 30, 2010PECOS Enrolled
2710 MIDDLEFIELD RD, 3RD FLOOR , PEDIATRICS, REDWOOD CITY, CA 94063(650) 364-6010 Get Directions Write a Review

NPPES record last updated: December 16, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Marissa Aillaud M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARISSA AILLAUD M.D. (NPI 1699090894) is an individual student in an organized health care education/training program in Redwood City, California and active in the NPI registry since March 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1699090894
Entity TypeIndividualFemale
Primary Taxonomy390200000X
Provider Legal NameMARISSA AILLAUDCredential: M.D.
Location Address2710 MIDDLEFIELD RD, 3RD FLOOR , PEDIATRICSRedwood City, CA 94063-3404
Mailing Address2710 Middlefield Rd, 3rd Floor , PediatricsRedwood City, CA 94063-3404 · (650) 364-6010
Phone(650) 364-6010
Sole ProprietorNo
Enumeration DateMarch 30, 2010
Last NPPES UpdateDecember 16, 2021
✔ NPI 1699090894 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
2710 MIDDLEFIELD RD, Redwood City, CA 94063
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marissa Aillaud M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Marissa Aillaud reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

County Of San Mateo
0.1 mi
Multi-Specialty
2710 MIDDLEFIELD RD
Redwood City, CA 94063
  • Reassigned Medicare billing, California enrollment
  • 597 clinicians in this Medicare group
NPI 1871529073 (650) 573-2120
Permanente Medical Group Inc
1.1 mi
Internal Medicine
1190 VETERANS BLVD
Redwood City, CA 94063
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1639252604 (650) 299-2000

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.

DR. ALISON LAURA PACHYNSKI MD MPH
Internal Medicine
2710 MIDDLEFIELD RD
REDWOOD CITY, CA 94063
San Mateo County (650) 364-6010
JEANETTE AVILES MD
Internal Medicine
2710 MIDDLEFIELD RD
REDWOOD CITY, CA 94063
San Mateo County (650) 573-2222
GIZELLA SHEILA LAKSANA M.D.
Pediatrics
2710 MIDDLEFIELD RD
REDWOOD CITY, CA 94063
San Mateo County (650) 578-7141
GABRIELA VALENCIA FNP
Nurse Practitioner (Family)
2710 MIDDLEFIELD RD
REDWOOD CITY, CA 94063
San Mateo County (650) 578-7141
COUNTY OF SAN MATEO
Clinic/Center (Federally Qualified Health Center (FQHC))
2710 MIDDLEFIELD RD
REDWOOD CITY, CA 94063
San Mateo County (650) 599-3890
DR. SONA AGGARWAL MD
Internal Medicine
2710 MIDDLEFIELD RD
REDWOOD CITY, CA 94063
San Mateo County (650) 366-6010
MARY LORETTA DAVILA R.D. IBCLC
Dietitian, Registered
2710 MIDDLEFIELD RD
REDWOOD CITY, CA 94063
San Mateo County (650) 578-7141
MS. MARY GRACE LEONG RD, CDE
Dietitian, Registered
2710 MIDDLEFIELD RD
REDWOOD CITY, CA 94063
San Mateo County (650) 578-7141

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 Marissa Aillaud's NPI number?

The NPI number for Marissa Aillaud is 1699090894. It was assigned to this individual provider in the NPPES registry on March 30, 2010.

Where is Marissa Aillaud located?

Marissa Aillaud practices at 2710 Middlefield Rd 3rd Floor , Pediatrics, Redwood City, CA 94063. The listed phone number is (650) 364-6010.

What is Marissa Aillaud's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is Marissa Aillaud enrolled in Medicare?

Yes. Marissa Aillaud is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Marissa Aillaud's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Aillaud reassigns Medicare benefits to 2 organizations: County Of San Mateo (Redwood City, CA) and Permanente Medical Group Inc (Redwood City, 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 Marissa Aillaud'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 Marissa Aillaud was last updated on December 16, 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.