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TIANKAI CATHERINE DU MD
NPI 1457921546
Pediatrics in Ellsworth, ME

Active since June 30, 2021PECOS Enrolled
50 UNION ST # 3200, ELLSWORTH, ME 04605(207) 664-7744 Get Directions Write a Review

NPPES record last updated: January 2, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jan 2, 2025, Jun 30, 2021 (2 updates tracked since 2021).

About Tiankai Catherine Du Md NPPES

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

TIANKAI CATHERINE DU MD (NPI 1457921546) is an individual pediatrics provider in Ellsworth, Maine, licensed in Maine (MD27542) and active in the NPI registry since June 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1457921546
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameTIANKAI CATHERINE DUCredential: MD
Location Address50 UNION ST # 3200Ellsworth, ME 04605-1534
Mailing Address50 Union St # 3200Ellsworth, ME 04605-1534 · (207) 664-7744
Phone(207) 664-7744
Sole ProprietorYes
Enumeration DateJune 30, 2021
Last NPPES UpdateJanuary 2, 20252 updates tracked since enumeration
NPPES CertifiedJanuary 2, 2025
✔ NPI 1457921546 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in ME · MD27542
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.
50 UNION ST # 3200, Ellsworth, ME 04605
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tiankai Catherine Du 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 Tiankai Du reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Maine Coast Regional Health Facilities
Same address
Medicare Defined Swing Bed Unit
50 UNION ST
Ellsworth, ME 04605
  • Reassigned Medicare billing, Maine enrollment
  • 174 clinicians in this Medicare group
NPI 1447204763 (207) 664-5301

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 04605 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
$82.58 typical visit price
range $53.26 – $162.77
Typical copayment $20.64 (range $13.31 – $40.69)
Most-billed visit code 99203
Established Patient
$94.60 typical visit price
range $16.90 – $132.79
Typical copayment $23.65 (range $4.22 – $33.19)
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

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

LEEANN MARIE CHATTO CNM
Advanced Practice Midwife
50 UNION ST # 3200
ELLSWORTH, ME 04605
Hancock County (207) 664-5650

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 Tiankai Du's NPI number?

The NPI number for Tiankai Du is 1457921546. It was assigned to this individual provider in the NPPES registry on June 30, 2021.

Where is Tiankai Du located?

Tiankai Du practices at 50 Union St # 3200, Ellsworth, ME 04605. The listed phone number is (207) 664-7744.

What is Tiankai Du's specialty?

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

Is Tiankai Du enrolled in Medicare?

Yes. Tiankai Du is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Tiankai Du's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tiankai Du reassigns Medicare benefits to Maine Coast Regional Health Facilities (Ellsworth, ME). 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 Tiankai Du's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tiankai Du accept?

Health plans from Anthem Blue Cross and Blue Shield list Tiankai Du 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 Tiankai Du was last updated on January 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.