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DR. HOLLY ANNE AGUILAR M.D.
NPI 1629215074
Pediatrics in Palo Alto, CA

Active since January 07, 2009PECOS Enrolled
725 WELCH RD, PALO ALTO, CA 94304(650) 497-8000 Get Directions Write a Review

NPPES record last updated: May 4, 2016. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Dr. Holly Anne Aguilar M.d. NPPES

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

DR. HOLLY ANNE AGUILAR M.D. (NPI 1629215074) is an individual pediatrics provider in Palo Alto, California, licensed in California (126924) and active in the NPI registry since January 2009. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1629215074
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. HOLLY ANNE AGUILARCredential: M.D.
Location Address725 WELCH RDPalo Alto, CA 94304-1601
Mailing Address1804 Embarcadero Rd, Ste 100Palo Alto, CA 94303-3318 · (650) 497-8000
Phone(650) 497-8000
Sole ProprietorNo
Enumeration DateJanuary 7, 2009
Last NPPES UpdateMay 4, 2016
✔ NPI 1629215074 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in CA · 126924✔ Licensed in FL · ME111036
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
725 WELCH RD, Palo Alto, CA 94304
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Other Names 1

Former Name (1)Holly Anne Wesolowski M.d.

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Holly Anne Aguilar 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 Reassignment

Medicare enrollment records show Holly Aguilar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Enloe Medical Center
160 mi
Surgery
1600 ESPLANADE, SUITE C
Chico, CA 95926
  • Reassigned Medicare billing, California enrollment
  • 184 clinicians in this Medicare group
NPI 1477975613 (530) 332-7300

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 94304 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

EIRI INENAGA MS, OTR/L
Occupational Therapist (Pediatrics)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8218
WENDY LEIGH ADAMS ARNP
Nurse Practitioner (Neonatal)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
KEVIN WEI-HAN CHI MD
Pediatrics
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
ASHEEN RAMA MD
Anesthesiology (Pediatric Anesthesiology)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
CRYSTAL LEE MACKALL MD
Pediatrics (Pediatric Hematology-Oncology)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
KRISTI LYNNE O'CONNOR OT
Occupational Therapist
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
LAUREN GENNA ROOS NP
Nurse Practitioner
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
SHALINI MITTAL MD
Hospitalist
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000

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 Holly Aguilar's NPI number?

The NPI number for Holly Aguilar is 1629215074. It was assigned to this individual provider in the NPPES registry on January 7, 2009. The provider is also known as Holly Anne Wesolowski M.D..

Where is Holly Aguilar located?

Holly Aguilar practices at 725 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 497-8000.

What is Holly Aguilar's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Holly Aguilar enrolled in Medicare?

Yes. Holly Aguilar is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Holly Aguilar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Holly Aguilar reassigns Medicare benefits to Enloe Medical Center (Chico, 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 Holly Aguilar'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 Holly Aguilar was last updated on May 4, 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.