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LOUIS J TESORO MD
NPI 1982773461
Pediatrics in Princeton, NJ

Active since November 07, 2006PECOS Enrolled
281 WITHERSPOON ST STE 200, PRINCETON, NJ 08540(609) 924-4892(877) 409-2156 Get Directions Write a Review

NPPES record last updated: February 24, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 24, 2025, Jun 1, 2023, Mar 29, 2023 and 1 more (4 updates tracked since 2018).

About Louis J Tesoro Md NPPES

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

LOUIS J TESORO MD (NPI 1982773461) is an individual pediatrics provider in Princeton, New Jersey, licensed in New Jersey (25MA05126600) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Princeton.

NPPES Registry Identity

NPI1982773461
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameLOUIS J TESOROCredential: MD
Location Address281 WITHERSPOON ST STE 200Princeton, NJ 08540-3224
Mailing Address401 Route 73 N Ste 320Marlton, NJ 08053-3426 · (609) 924-4892 · Fax (877) 409-2156
Phone(609) 924-4892
Fax(877) 409-2156
Sole ProprietorNo
Enumeration DateNovember 7, 2006
Last NPPES UpdateFebruary 24, 20254 updates tracked since enumeration
NPPES CertifiedJune 1, 2023
✔ NPI 1982773461 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in NJ · 25MA05126600
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.
281 WITHERSPOON ST STE 200, Princeton, NJ 08540
Open in Google Maps ↗

Secondary Practice Location 1

Location 166 Mt Lucas RoadPrinceton, NJ 08540 · Phone (609) 924-4892 · Fax (609) 921-9380

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Louis J Tesoro Md 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 Louis Tesoro reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Advocare, LLC
35 mi
Pediatrics
401 ROUTE 73 N STE 320
Marlton, NJ 08053
  • Reassigned Medicare billing, New Jersey enrollment
  • 909 clinicians in this Medicare group
NPI 1770538696 (856) 872-7055

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 08540 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
$94.90 typical visit price
range $61.59 – $185.05
Typical copayment $23.72 (range $15.39 – $46.26)
Most-billed visit code 99203
Established Patient
$107.94 typical visit price
range $20.08 – $150.98
Typical copayment $26.98 (range $5.02 – $37.74)
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 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KENDRA WALKER SIROLLY MD
Pediatrics
281 WITHERSPOON ST STE 200
PRINCETON, NJ 08540
Mercer County (609) 924-4892
KRISTIN M FAWCETT NP
Nurse Practitioner (Pediatrics)
281 WITHERSPOON ST STE 200
PRINCETON, NJ 08540
Mercer County (609) 924-4892
KAREN ROSSI MSN
Nurse Practitioner (Pediatrics)
281 WITHERSPOON ST STE 200
PRINCETON, NJ 08540
Mercer County (609) 924-4892
DR. PAULA GRASSO ZOLLNER MD
Pediatrics
281 WITHERSPOON ST STE 200
PRINCETON, NJ 08540
Mercer County (609) 924-4892
ADVOCARE , LLC
Pediatrics
281 WITHERSPOON ST STE 200
PRINCETON, NJ 08540
Mercer County (609) 900-7229

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 Louis Tesoro's NPI number?

The NPI number for Louis Tesoro is 1982773461. It was assigned to this individual provider in the NPPES registry on November 7, 2006.

Where is Louis Tesoro located?

Louis Tesoro practices at 281 Witherspoon St Ste 200, Princeton, NJ 08540. The listed phone number is (609) 924-4892.

What is Louis Tesoro's specialty?

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

Is Louis Tesoro enrolled in Medicare?

Yes. Louis Tesoro is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Louis Tesoro's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Louis Tesoro reassigns Medicare benefits to Advocare, LLC (Marlton, NJ). 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 Louis Tesoro's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Louis Tesoro accept?

Health plans from Oscar Health list Louis Tesoro as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Louis Tesoro was last updated on February 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.