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Dr. Abby Larson , MD

Surgery - Pediatric Surgery • Aurora, CO

Active NPI 1861815284 Individual Practitioner Female Practitioner Accepts Medicare assignment
Practice location in NPPES

13123 E 16th Ave
Aurora, CO 800457106

Call 7207771234 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

13123 E 16th Ave

Aurora, CO 800457106

Telephone 7207771234
Organization at the Same NPPES Address or Phone
University Physicians Incorporated Facility NPI 1083662498

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: University Physicians Incorporated. See the list

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026

Medical School

Johns Hopkins University School Of Medicine

Graduation Year

2016

30-day fills

12 standardized 30-day fills in 2022

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$20 in 2022

The total cost of these prescriptions in 2022, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2022.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $17.55 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

Years since graduation

10 years (graduated 2016)

CMS Doctors and Clinicians data list 2016 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.

NPI first issued

2014

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Larson has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Larson as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Aurora and Colorado

19 active clinicians are listed under Surgery - Pediatric Surgery with a practice address in Aurora, CO (27 in Colorado).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Aurora

0% of these 19 clinicians have the CMS telehealth indicator.

26.3% of these 19 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2022), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $17.55.

Manufacturer Payment Nature Product Type Amount ($)
Takeda Pharmaceuticals U.S.A., Inc.
Food and Beverage
In-kind items and services
ENTYVIO General $17.55

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2022.

CMS Part D · Data Year 2022
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Oxycodone Hcl Oxycodone Hcl 12 17 $20.48 12

Source: CMS Part D by Provider and Drug, 2022; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-09-30
Surgery - Pediatric Surgery Primary Specialty

NUCC Taxonomy Code: 2086S0120X

License # reported to NPPES CO DR.0075617

A surgeon with expertise in the management of surgical conditions in premature and newborn infants, children and adolescents.

Surgery

NUCC Taxonomy Code: 208600000X

License # reported to NPPES MA 267455

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Colorado Division of Professions and Occupations.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - GENERAL SURGERY

Medicare Enrollment ID

I20250827001955

Enrollment State Jurisdiction

CO

PECOS Control ID

1850892423

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026

University Physicians Incorporated

13123 E 16th Ave, Aurora, CO 800457106

Phone: 7207771234

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

6 listed
Dr. Christopher Chinn , MD

Anesthesiology - Pediatric Anesthesiology

NPI 1003918574

Doctor of Medicine (M.D.)

Dr. Robert Clyman , MD

Psychiatry & Neurology - Child & Adolescent Psychiatry

NPI 1013229798

Doctor of Medicine (M.D.)

Brandi Farrell , MSN, CPNP- AC, PC

Nurse Practitioner - Pediatrics

NPI 1023152030

Master of Science in Nursing, CPNPAC, PC

Robin Feldman , PA-C

Physician Assistant - Medical

NPI 1013478445

Physician Assistant (Certified)

Dr. Anne Stratton , MD

Physical Medicine & Rehabilitation - Pediatric Rehabilitation Medicine

NPI 1023164704

Doctor of Medicine (M.D.)

Dr. Timothy Vanderkooy , MD

Emergency Medicine - Pediatric Emergency Medicine

NPI 1003135104

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

15 Historical Events
🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 30, 2025

Surgery (license number reported to NPPES: CO DR.0075617)

📍
Updated Practice Location August 22, 2025

Registered at 13123 E 16TH AVE, AURORA, CO 800457106 (Tel: 7207771234)

📍
Updated Business Mailing Address August 22, 2025

Registered at PO BOX 110429, AURORA, CO 800420429

👤
Provider Name / Credentials Updated August 22, 2025

Recorded as ABBY LARSON, MD

✅
NPI Profile Active March 24, 2017

NPI status registered as active in NPPES database

📍
Updated Practice Location March 24, 2017

Registered at 75 FRANCIS ST, BRIGHAM AND WOMEN'S HOSPITAL, BOSTON, MA 02115 (Tel: 6177325500)

📍
Updated Business Mailing Address March 24, 2017

Registered at 229 FREEMAN ST, APT 2, BROOKLINE, MA 024466795 (Tel: 4103108889)

👤
Provider Name / Credentials Updated March 24, 2017

Recorded as ABBY LARSON

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 24, 2017

Surgery (license number reported to NPPES: MA 267455)

✅
NPI Profile Active January 22, 2014

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) January 22, 2014

Registered at 600 N WOLFE ST, THE JOHNS HOPKINS HOSPITAL, BALTIMORE, MD 212872109 (Tel: 4109555000)

📍
Business Mailing Address (Initial Record) January 22, 2014

Registered at 733 RUTLAND AVENUE, THE JOHNS HOPKINS SCHOOL OF MEDICINE, BALTIMORE, MD 212052109 (Tel: 4109553080)

👤
Provider Name / Credentials (Initial Record) January 22, 2014

Recorded as ABBY LARSON

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 22, 2014

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration January 22, 2014

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1861815284
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: January 22, 2014
Last Update: September 30, 2025
Sole Proprietor: No

Mailing Address

Po Box 110429

Aurora, CO 800420429

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.