DR. THOMAS R WALKER M.D.
NPI 1275570053
Pediatrics - Pediatric Gastroenterology in Aurora, CO

Q: What is Thomas Walker's NPI number?

The NPI number for Thomas Walker is 1275570053. It was assigned to this individual provider in the NPPES registry on June 1, 2006. The provider is also known as N/A N/A N/A MD.

Q: What is Thomas Walker's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Walker was last updated on September 11, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.

Active since June 01, 2006PECOS Enrolled

13123 E 16TH AVE # B290, AURORA, CO 80045(720) 777-6669(720) 777-7277 Get Directions Write a Review

NPPES record last updated: September 11, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Thomas R Walker M.d. NPPES

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

DR. THOMAS R WALKER M.D. (NPI 1275570053) is an individual pediatric gastroenterology provider in Aurora, Colorado, licensed in Colorado (0057373) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1275570053

Entity TypeIndividualMale

Primary Taxonomy2080P0206X

Provider Legal NameDR. THOMAS R WALKERCredential: M.D.

Location Address13123 E 16TH AVE # B290Aurora, CO 80045-7106

Mailing Address13123 E 16th Ave # B290Aurora, CO 80045-7106 · (720) 777-6669 · Fax (720) 777-7277

Phone(720) 777-6669

Fax(720) 777-7277

Sole ProprietorNo

Enumeration DateJune 1, 2006

Last NPPES UpdateSeptember 11, 2018

✔ NPI 1275570053 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0206X

Licenses✔ Licensed in CO · 0057373✔ Licensed in MA · 223033

Definition

A pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs.

13123 E 16TH AVE # B290, Aurora, CO 80045

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Other Names 1

Other Name (5)N/a N/a N/a Md

Secondary Practice Locations 2

Location 1801 N 29th StBillings, MT 59101-0905 · Phone (406) 238-2500

Location 2300 Longwood Ave, Children's Hosp-GI & NutritionBoston, MA 02115-5724 · Phone (617) 355-7911

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Wyoming, Select Health, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Thomas R Walker 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 Reassignments

Medicare enrollment records show Thomas Walker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Physicians Incorporated

0.1 mi

Pediatrics

13123 E 16TH AVE
Aurora, CO 80045

Reassigned Medicare billing, Colorado enrollment
4,283 clinicians in this Medicare group

NPI 1083662498 (720) 777-1234

Banner Hospital Based Physicians West LLC

228 mi

Multi-Specialty

1233 E 2ND ST
Casper, WY 82601

Reassigned Medicare billing, Wyoming enrollment
54 clinicians in this Medicare group

NPI 1619464120 (307) 577-2171

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 80045 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

$132.55 typical visit price

range $58.06 – $174.82

Typical copayment $33.13 (range $14.51 – $43.70)

Most-billed visit code 99204

Established Patient

$102.03 typical visit price

range $18.88 – $142.79

Typical copayment $25.50 (range $4.72 – $35.69)

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.

MS. SARA JEAN FIDANZA CPNP

Registered Nurse (Gastroenterology)

13123 E 16TH AVE # B290
AURORA, CO 80045

Adams County (720) 777-2747

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 Thomas Walker's NPI number?

The NPI number for Thomas Walker is 1275570053. It was assigned to this individual provider in the NPPES registry on June 1, 2006. The provider is also known as N/A N/A N/A MD.

Where is Thomas Walker located?

Thomas Walker practices at 13123 E 16th Ave # B290, Aurora, CO 80045. The listed phone number is (720) 777-6669.

What is Thomas Walker's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

Is Thomas Walker enrolled in Medicare?

Yes. Thomas Walker is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Thomas Walker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Walker reassigns Medicare benefits to 2 organizations: University Physicians Incorporated (Aurora, CO) and Banner Hospital Based Physicians West LLC (Casper, WY). Each 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 Thomas Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Walker accept?

Health plans from Blue Cross Blue Shield of Wyoming, Select Health and UnitedHealthcare list Thomas Walker 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 Thomas Walker was last updated on September 11, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.