Are you Dr. Downs? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 8315 Walnut Hill Ln, Suite 220, Dallas, TX 75231
About Dr. Downs
J. Marcus Downs, MD is a healthcare provider in Dallas, TX specializing in colorectal surgery (proctology). J. Marcus trained at University of Missouri, Columbia School of Medicine, graduating in 1983. J. Marcus is also listed as specializing in colon & rectal surgery. According to Medicare claims data, J. Marcus cared for 525 Medicare patients across 564 services. The services billed most often include new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and biopsy of large bowel using a flexible endoscope. This provider record is associated with NPI 1811922610.
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
- (214) 363-6123
- Email not available
Practice Locations
8315 WALNUT HILL LN SUITE 220
Dallas, TX 75231
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
Anorectal conditions
Anorectal disorders
Bowel disorders
- Bowel Blockage in Babies
- Chronic diarrhea
- Constipation From Pain Medicine
- Difficulty Emptying Bowels
- Severely Enlarged Colon
- Twisted Bowel
Bowel symptoms
Cancer
Colon conditions
Digestive emergencies
Infections
Infections & cysts
Inflammatory bowel disease
Inflammatory conditions
Ostomy & surgical complications
Pain
Pelvic disorders
Pelvic floor & structure
Skin conditions
Tumors & growths
Vascular & inflammatory
Procedures & services
Most searched procedures
Abdominal surgery
Anorectal procedures
Bowel management
Cancer screening
Cancer surgery
Diagnostic tests
Diagnostics
Digestive health
Endoscopy & minimally invasive
Excision & drainage
Fistula procedures
Hemorrhoid treatments
Inflammatory bowel surgery
Injections & pain relief
Minimally invasive surgery
Ostomy surgery
Pelvic floor & prolapse
Pelvic therapy
Reconstructive surgery
Therapy & rehabilitation
Procedures Most Often Billed to Medicare
564 services · 525 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
90 | More than most peers in Colorectal Surgery (Proctology) |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
46 | More often than most peers in Colorectal Surgery (Proctology) |
| Removal of external hemorrhoids by rubber banding | Procedure | 46221 |
29 | As often as other peers in Colorectal Surgery (Proctology) |
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
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 |
105 | More 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 |
94 | More often than most peers in Colorectal Surgery (Proctology) |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
56 | More often than most peers in Colorectal Surgery (Proctology) |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
35 | 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) |
| Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Billing code | G0121 |
32 | More 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.
Other colorectal surgery specialists in Dallas 8
Same specialty, same city.
More connections — 22 related providers in 3 groups
Trained at University of Missouri, Columbia School of Medicine 6
Other providers in the same specialty who trained at the same institution.
Class of 1983 at University of Missouri, Columbia School of Medicine 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 TX who bill this service to Medicare most often.
Common questions
What does Dr. Downs specialize in?
Dr. Downs is a colorectal surgery (proctology) in Dallas, TX. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Downs located?
Dr. Downs is listed at 8315 Walnut Hill Ln Suite 220, Dallas, TX 75231. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Downs's phone number?
The number on file is (214) 363-6123. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Downs's NPI number?
Dr. Downs's National Provider Identifier is 1811922610. 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. Downs go to medical school?
Dr. Downs attended University of Missouri, Columbia School of Medicine, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Downs been practicing?
Dr. Downs has 43 years experience. Calculated from a graduation year of 1983, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Downs do most often?
According to Medicare billing data, Dr. Downs 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 removal of external hemorrhoids by rubber banding, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Downs confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Downs. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.