Physician Profile
Robert M. McCallum, MD
Unclaimed ProfileAbout Dr. Mccallum
Listed in the NPI registry as a specialist, Robert M. McCallum, MD practices in Tucson, AZ. Medicare claims data shows Robert provided 809 services to 798 patients. The services billed most often include 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, new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, and removal of polyps or growths of large bowel using an endoscope with mechanical snare.
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
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (520) 327-3454
- Email not available
Practice Locations
3040 N. SWAN RD STE B
Tucson, AZ 85712
Procedures Most Often Billed to Medicare
809 services · 798 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
88 | More often than most peers in Specialist |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
68 | As often as other peers in Specialist |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
29 | More often than most peers in Specialist |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
27 | Less often than most peers in Specialist |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
22 | More often than most peers in Specialist |
| 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 |
294 | More often than most peers in Specialist |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
108 | More often than most peers in Specialist |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
58 | More often than most peers in Specialist |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
52 | Less often than most peers in Specialist |
| Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Billing code | G0121 |
47 | More often than most peers in Specialist |
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 specialists at this location 2
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 specialists in Tucson 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1988 at Other 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 AZ who bill this service to Medicare most often.
Common questions
What does Dr. McCallum specialize in?
Dr. McCallum is a specialist in Tucson, AZ. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. McCallum located?
Dr. McCallum is listed at 3040 N. Swan Rd Ste B, Tucson, AZ 85712. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. McCallum's phone number?
The number on file is (520) 327-3454. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. McCallum?
Dr. McCallum's National Provider Identifier is 1134264427. 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. McCallum go to medical school?
Dr. McCallum attended Other, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. McCallum have?
Dr. McCallum has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What does Dr. McCallum do most often?
According to Medicare billing data, Dr. McCallum performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope and diagnostic exam of large bowel using a flexible endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. McCallum's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. McCallum. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.