Physician Profile
Unclaimed ProfileAbout KELLER
Darren Bond Keller, M.D. is a healthcare provider in San Diego, CA specializing in gastroenterology. Darren trained at Boston University School of Medicine, graduating in 2001. Darren is also listed as specializing in internal medicine. According to Medicare claims data, Darren cared for 420 Medicare patients across 870 services.
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
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (858) 939-6531
- Email not available
Practice Locations
2929 HEALTH CENTER DR
San Diego, CA 92123
Procedures Most Often Billed to Medicare
870 services · 420 patients · 10 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
35 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
16 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
11 |
| Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes | Treatment | 99153 |
103 |
| Injection, midazolam hydrochloride, per 1 mg | Drug given | J2250 |
471 |
| Injection, fentanyl citrate, 0.1 mg | Drug given | J3010 |
68 |
| Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monit | Billing code | G0500 |
76 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
59 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
20 |
| Telephone medical discussion with physician, 21-30 minutes | Office visit | 99443 |
11 |
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 gastroenterology specialists at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
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 — 30 related providers in 4 groups
Other gastroenterology specialists in San Diego 7
Same specialty, same city.
Trained at Boston University School of Medicine 7
Other providers in the same specialty who trained at the same institution.
Class of 2001 at Boston University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of polyps or growths of large bowel using an endoscope with mechanical snare 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Keller specialize in?
Dr. Keller is a gastroenterology in San Diego, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GASTROENTEROLOGY”.
NPI registry
Where is Dr. Keller located?
Dr. Keller is listed at 2929 HEALTH CENTER DR, San Diego, CA 92123. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Keller's phone number?
The number on file is (858) 939-6531. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Keller's NPI number?
Dr. Keller's National Provider Identifier is 1013988922. 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. Keller go to medical school?
Dr. Keller attended Boston University School of Medicine, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Keller been practicing?
Dr. Keller has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Keller do most often?
According to Medicare billing data, Dr. Keller performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope; provides treatments such as use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Keller confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Keller. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.