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Edit this profileAt a glance
- 5510 Presidio Pkwy Bldg B, Medical Tower I, San Antonio, TX 78249
About Dr. Keller
Michael A. Keller, M.D. practices colorectal surgery (proctology) in San Antonio, TX. Michael is also listed as specializing in colon & rectal surgery. According to Medicare claims data, Michael cared for 326 Medicare patients across 413 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, and subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes. The provider's National Provider Identifier (NPI) is 1659572824.
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
- (210) 874-3640
- Email not available
Practice Locations
5510 PRESIDIO PKWY BLDG B MEDICAL TOWER I
San Antonio, TX 78249
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
413 services · 326 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of central venous tube with port (5 years or older) | Procedure | 36561 |
16 | Too few peers to compare |
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
15 | Less often than most peers in Colorectal Surgery (Proctology) |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
14 | Less often than most peers in Colorectal Surgery (Proctology) |
| Fluoroscopic guidance for insertion or removal of central vein access device | Imaging | 77001 |
15 | Too few peers to compare |
| Ultrasonic guidance for blood vessel access | Imaging | 76937 |
15 | Too few peers to compare |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
139 | More than most peers in Colorectal Surgery (Proctology) |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
106 | More than most peers in Colorectal Surgery (Proctology) |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
46 | More often than most peers in Colorectal Surgery (Proctology) |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
17 | As often as other 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 |
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 3
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 San Antonio 7
Same specialty, same city.
More connections — 20 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of central venous tube with port (5 years or older) 4
Providers in TX who bill this service to Medicare most often.
Common questions
What does Michael A. Keller specialize in?
Michael A. Keller is a colorectal surgery (proctology) in San Antonio, TX. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Michael A. Keller located?
Michael A. Keller is listed at 5510 Presidio Pkwy Bldg B Medical Tower I, San Antonio, TX 78249. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Michael A. Keller's phone number?
The number on file is (210) 874-3640. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Michael A. Keller's NPI number?
Michael A. Keller's National Provider Identifier is 1659572824. 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 Michael A. Keller train?
Michael A. Keller attended Other, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Michael A. Keller been practicing?
Michael A. Keller has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What does Michael A. Keller do most often?
According to Medicare billing data, Michael A. Keller performs procedures including insertion of central venous tube with port, diagnostic exam of anus using an endoscope and biopsy of large bowel using a flexible endoscope; reads or performs imaging such as fluoroscopic guidance for insertion or removal of central vein access device and ultrasonic guidance for blood vessel access, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Michael A. Keller confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Michael A. Keller. If this is you, claiming it is free.
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