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

NALLIE CHERPHENG THOR MD
NPI 1427751668
Internal Medicine in Danbury, CT

Active since March 27, 2023PECOS Enrolled
120 MAIN ST FL 3, DANBURY, CT 06810(203) 456-1406 Get Directions Write a Review

NPPES record last updated: October 9, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 9, 2026, Mar 27, 2023 (2 updates tracked since 2023).

About Nallie Cherpheng Thor Md NPPES

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

NALLIE CHERPHENG THOR MD (NPI 1427751668) is an individual internal medicine provider in Danbury, Connecticut, licensed in Wisconsin (87211) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2022).

NPPES Registry Identity

NPI1427751668
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameNALLIE CHERPHENG THORCredential: MD
Location Address120 MAIN ST FL 3Danbury, CT 06810-7834
Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 326-2250
Phone(203) 456-1406
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateMarch 27, 2023
Last NPPES UpdateOctober 9, 20262 updates tracked since enumeration
NPPES CertifiedOctober 9, 2026
✔ NPI 1427751668 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WI · 87211
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
120 MAIN ST FL 3, Danbury, CT 06810
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1130 Division StDerby, CT 06418-1326 · Phone (203) 735-7421
Location 22414 Kohler Memorial DrSheboygan, WI 53081-3129 · Phone (920) 457-4461

Other Identifiers 1

Medicaid100422683WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nallie Cherpheng Thor Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4587128061
PECOS Enrollment IDI20260715002923
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 Nallie Thor reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Aurora Medical Group, Inc.
746 mi
Clinic/Center
2414 KOHLER MEMORIAL DR
Sheboygan, WI 53081
  • Reassigned Medicare billing, Wisconsin enrollment
  • 4,609 clinicians in this Medicare group
NPI 1174670244 (920) 457-4461

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 06810 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
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
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 12

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

FNU NEELAM MD
Student in an Organized Health Care Education/Training Program
120 MAIN ST FL 3
DANBURY, CT 06810
Western Connecticut Planning Region (203) 456-1406
TRUSHNA R PATEL MD
Student in an Organized Health Care Education/Training Program
120 MAIN ST FL 3
DANBURY, CT 06810
Western Connecticut Planning Region (203) 743-9760
DR. POOYA HAZEGH
Student in an Organized Health Care Education/Training Program
120 MAIN ST FL 3
DANBURY, CT 06810
Western Connecticut Planning Region (203) 743-9760
DR. OGHENEVESE IBINABO JEFIA MD
Student in an Organized Health Care Education/Training Program
120 MAIN ST FL 3
DANBURY, CT 06810
Western Connecticut Planning Region (203) 456-1406
DR. NAFISHA AISHAH ALI MD
Student in an Organized Health Care Education/Training Program
120 MAIN ST FL 3
DANBURY, CT 06810
Western Connecticut Planning Region (203) 456-1406
DR. VIKAS VERMA MD
Student in an Organized Health Care Education/Training Program
120 MAIN ST FL 3
DANBURY, CT 06810
Western Connecticut Planning Region (203) 456-1406
DR. HARPREET AUJLA MD
Student in an Organized Health Care Education/Training Program
120 MAIN ST FL 3
DANBURY, CT 06810
Western Connecticut Planning Region (203) 743-9760
MARIA FERNANDA AQUINO MD
Student in an Organized Health Care Education/Training Program
120 MAIN ST FL 3
DANBURY, CT 06810
Western Connecticut Planning Region (203) 743-9760

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 Nallie Thor's NPI number?

The NPI number for Nallie Thor is 1427751668. It was assigned to this individual provider in the NPPES registry on March 27, 2023.

Where is Nallie Thor located?

Nallie Thor practices at 120 Main St Fl 3, Danbury, CT 06810. The listed phone number is (203) 456-1406.

What is Nallie Thor's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Nallie Thor enrolled in Medicare?

Yes. Nallie Thor is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Nallie Thor's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nallie Thor reassigns Medicare benefits to Aurora Medical Group, Inc. (Sheboygan, WI). 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 Nallie Thor's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nallie Thor accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Network Health and 2 other insurers list Nallie Thor 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 Nallie Thor was last updated on October 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.