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- 9397 Crown Crest Blvd, Suite 201, Parker, CO 80138
About Dr. Sun
John H. Sun, MD practices colorectal surgery (proctology) in Parker, CO. John is a 1990 graduate of University of Colorado School of Medicine, Denver. John is also listed as specializing in surgery. Medicare claims data shows John provided 367 services to 360 patients. The services billed most often include biopsy of large bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare, and established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more. The provider's National Provider Identifier (NPI) is 1003865023.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (303) 320-0699
- Email not available
Practice Locations
9397 CROWN CREST BLVD SUITE 201
Parker, CO 80138
Conditions Commonly Evaluated or Treated
Within Colon and Rectal Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Anal fissures
- Colon cancer
- Crohn's disease
- Diverticulitis
- Hemorrhoids
Anorectal conditions
- Anal fistula
- Rectal Ulcer
Anorectal disorders
- Anal Itching
- Anal Skin Tags
- Anal Stricture
- Perianal Hematoma
- Rectovaginal Fistula
Bowel disorders
- Bowel Blockage in Babies
- Chronic diarrhea
- Constipation From Pain Medicine
- Difficulty Emptying Bowels
- Severely Enlarged Colon
- Twisted Bowel
Bowel symptoms
- Constipation
- Diverticulosis
- Lower gastrointestinal bleeding
Cancer
- Anal cancer
- Appendix cancer
- Inherited Cancer Risk
- Precancerous Anal Cells
Colon conditions
- Inherited Colon Polyps
Digestive emergencies
Infections
- C. diff Infection
Infections & cysts
Inflammatory bowel disease
- Radiation Proctitis
- Ulcerative colitis
Inflammatory conditions
- Rectal Inflammation
Ostomy & surgical complications
- Stoma Problems
Pain
- Rectal Pain
- Tailbone pain
Pelvic disorders
- Bowel Endometriosis
Pelvic floor & structure
Skin conditions
- Perianal Boils
Tumors & growths
Vascular & inflammatory
Procedures & services
Most searched procedures
- Bowel resection
- Colonoscopy
- Fistula repair
- Hemorrhoid removal
Abdominal surgery
- Appendectomy
- Bowel Adhesion Removal
Anorectal procedures
- Anal Dilation
Bowel management
- Transanal Irrigation
Cancer screening
- Cancer Genetic Testing
Cancer surgery
- Complete Rectum and Anus Removal
- Heated Chemotherapy for Abdominal Cancer
- Low Anterior Resection
Diagnostic tests
- Endorectal Ultrasound
- J-Pouch Scope
- Rectal Exam with Scope
Diagnostics
- Defecography
- High-Resolution Anorectal Manometry
- High-Resolution Anoscopy
- Prostate Ultrasound
Digestive health
Endoscopy & minimally invasive
- Colon polyp removal
- Flexible sigmoidoscopy
- Transanal Minimally Invasive Surgery
Excision & drainage
- Anal Skin Tag Removal
- Anal Wart Removal
- Drainage of anal abscess
- Pilonidal cyst surgery
Fistula procedures
- Seton Drain Placement
Hemorrhoid treatments
- Hemorrhoid Injections
- Laser Hemorrhoid Treatment
- Rubber-band ligation of hemorrhoids
Inflammatory bowel surgery
- Bowel-Sparing Surgery for Crohn's
Injections & pain relief
- Anal Sphincter Botox
Minimally invasive surgery
- Robotic Colon Surgery
Ostomy surgery
- Colostomy Placement
- Ileostomy Surgery
- Parastomal Hernia Repair
- Stoma Revision
Pelvic floor & prolapse
Pelvic therapy
- Pelvic Biofeedback Therapy
Reconstructive surgery
- Anal Sphincter Repair
- J-Pouch Surgery
- Ostomy reversal
- Rectovaginal Fistula Repair
Therapy & rehabilitation
Procedures Most Often Billed to Medicare
367 services · 360 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
136 | More than most peers in Colorectal Surgery (Proctology) |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
119 | More than most peers in Colorectal Surgery (Proctology) |
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
33 | As often as other peers in Colorectal Surgery (Proctology) |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
34 | More often than most peers in Colorectal Surgery (Proctology) |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
28 | As often as other peers in Colorectal Surgery (Proctology) |
| 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 | Less often than most peers in Colorectal Surgery (Proctology) |
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 — 14 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 3
Providers in CO who bill this service to Medicare most often.
Common questions
What does Dr. Sun specialize in?
Dr. Sun is a colorectal surgery (proctology) in Parker, CO. That is the designation recorded for this NPI in the federal registry.
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. Contact the office directly to confirm availability and scheduling.
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.
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