Physician Profile
Unclaimed ProfileAbout SUN
John H Sun, MD practises colorectal surgery (proctology) in Parker, CO. John is a 1990 graduate of University of Colorado School of Medicine, Denver. John is also listed as specialising in surgery.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Sun specialise in?
Dr. Sun is a colorectal surgery (proctology) in Parker, CO. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “COLORECTAL SURGERY (PROCTOLOGY)”.
NPI registry
Where is Dr. Sun located?
Dr. Sun is listed at 9397 CROWN CREST BLVD SUITE 201, Parker, CO 80138. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Sun's phone number?
The number on file is (303) 320-0699. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Sun?
Dr. Sun's National Provider Identifier is 1003865023. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Sun go to medical school?
Dr. Sun attended University of Colorado School of Medicine, Denver, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Sun have?
Dr. Sun has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Sun do most often?
According to Medicare billing data, Dr. Sun performs procedures including biopsy of large bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare and diagnostic exam of anus using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Sun's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Sun. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (303) 320-0699
- Email not available
Practice Locations
9397 CROWN CREST BLVD SUITE 201
Parker, CO 80138
Procedures Most Often Billed to Medicare
367 services · 360 patients · 6 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
136 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
119 |
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
33 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
34 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
28 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
17 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other colorectal surgery specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 19 related providers in 3 groups
Trained at University of Colorado School of Medicine, Denver 3
Other providers in the same specialty who trained at the same institution.
Class of 1990 at University of Colorado School of Medicine, Denver 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of large bowel using a flexible endoscope 8
Providers in CO who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.