Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. SONIA SINGH NAIN M.D.
NPI 1801893011
Pediatrics in Downers Grove, IL

Q: What is Sonia Nain's NPI number?

The NPI number for Sonia Nain is 1801893011. It was assigned to this individual provider in the NPPES registry on July 1, 2005. The provider is also known as Dr. Sonia Singh.

Q: What is Sonia Nain's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Sonia Nain was last updated on August 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 days 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.

Active since July 01, 2005PECOS Enrolled

1441 BRANDING AVE STE 310, DOWNERS GROVE, IL 60515(844) 284-0381(414) 389-2184 Get Directions Write a Review

NPPES record last updated: August 25, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Aug 25, 2026, Apr 10, 2026, Apr 5, 2026 and 3 more (6 updates tracked since 2024).

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About Dr. Sonia Singh Nain M.d. NPPES

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

DR. SONIA SINGH NAIN M.D. (NPI 1801893011) is an individual pediatrics provider in Downers Grove, Illinois, licensed in Virginia (0101236489) and active in the NPI registry since July 2005. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2001).

NPPES Registry Identity

NPI1801893011

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. SONIA SINGH NAINCredential: M.D.

Location Address1441 BRANDING AVE STE 310Downers Grove, IL 60515-5624

Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900 · Fax (847) 390-4757

Phone(844) 284-0381

Fax(414) 389-2184

Sole ProprietorNo

Medical School CMSOtherGraduated 2001

Enumeration DateJuly 1, 2005

Last NPPES UpdateAugust 25, 20266 updates tracked since enumeration

NPPES CertifiedAugust 25, 2026

✔ NPI 1801893011 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

Licenses✔ Licensed in VA · 0101236489✔ Licensed in WI · 14732✔ Licensed in MD · D0097681✔ Licensed in IL · 036.178362✔ Licensed in DC · MD600003827

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.

1441 BRANDING AVE STE 310, Downers Grove, IL 60515

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Other Names 1

Other Name (5)Dr. Sonia Singh

Secondary Practice Locations 2

Location 114555 W National AveNew Berlin, WI 53151-4494 · Phone (262) 693-4312

Location 28751 Mountain Valley RdFairfax Station, VA 22039-2823 · Phone (703) 615-9891 · Fax (703) 615-9891

Other Identifiers 1

Medicaid100405815WI

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Sonia Singh Nain M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6507813573

PECOS Enrollment IDI20260305001481, I20260422002379, I20260624003954

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60515 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

$93.02 typical visit price

range $59.81 – $181.38

Typical copayment $23.25 (range $14.95 – $45.34)

Most-billed visit code 99203

Established Patient

$105.07 typical visit price

range $19.15 – $147.12

Typical copayment $26.26 (range $4.78 – $36.78)

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.

THERESA DOLAN APN

Nurse Practitioner (Family)