What is John Sun's specialty?

John Sun (NPI 1003865023) is a Medicare-billing provider whose primary specialty is Colorectal Surgery (Proctology) in Parker, CO.

Where does John Sun practice?

John Sun practices in Parker, CO, based on the location reported in the CMS Medicare provider datasets for NPI 1003865023.

How much does Medicare pay John Sun?

John Sun (NPI 1003865023) received approximately $56K in total Medicare Part B payments, serving 197 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1003865023

John SunMD

Colorectal Surgery (Proctology)Parker, COI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

360

Unique beneficiaries

—

Total services

367

Distinct HCPCS

Medicare payment

$37K

Peer benchmark

Total Medicare services vs. 20 Colorectal Surgery (Proctology) providers in CO — top quintile (cohort median 292).

PRESCRIBING · PART D · 2024

Total Rx claims

141

Beneficiaries

—

Total drug cost

$9K

Distinct drugs

Brand share

100.0%

Top prescribed drugs

Sodium, Potassium,mag Sulfates141 claims

QUALITY · MIPS · 2024

Final MIPS score

86.0

Quality

78.6

Cost

74.6

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.46%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 060114

Hospital

REFERRAL NETWORK

Where John Sun's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 3 inbound referrers · 10 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PORTERCARE ADVENTIST HEALTH SYSTEM	35	120
NPI 1396781134	13	42
UNIVERSITY OF COLORADO HOSPITAL AUTHORITY	11	47

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
PORTERCARE ADVENTIST HEALTH SYSTEM	103	412
WEBB, GORDON	38	128
Maria Dean Certified Registered Nurse Anesthetist (CRNA) · Parker, CO	35	93
ARGO, TANYA	25	191
Theodore Honebrink Pathology · Minneapolis, MN	16	52
NPI 1396781134	16	30
PACHELO, GEORGE	16	45
Mark Howard Certified Registered Nurse Anesthetist (CRNA) · Aurora, CO	15	68
NPI 1215001508	12	91
NPI 1881681526	11	25

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events