Active NPI 1134264427 Individual Practitioner Male Practitioner

Dr. Robert M Mccallum , MD

Specialist • Tucson, AZ

✓ Accepts Medicare Assignment

Public Directory Information & Medical Disclaimer

This profile is compiled from official public domain records provided by CMS and the NPPES registry. TRUE-MEDINFO is an independent reference directory and does not provide medical advice, diagnosis, or treatment recommendations. Always consult a licensed medical professional for personal health decisions.

Professional Overview & Biography Verified Profile Summary

Dr. Robert Mccallum, MD is a registered Specialist practitioner in Tucson, AZ. With approximately 38 years of clinical practice since completing medical education in 1988, Dr. Mccallum provides healthcare services at the registered practice location at 3040 N. SWAN RD STE B.

Dr. Mccallum is affiliated with Tucson Gastroenterology Specialists, Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services 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 monito, new patient outpatient office visit, removal of polyps or growths of large bowel using an endoscope with mechanical snare. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

3040 N. Swan Rd Ste B

Tucson, AZ 857121206

Telephone 5203273454

Fax 5203273431

Associated Practice Facility / Clinic

🏢 Tucson Gastroenterology Institute, Llc Facility NPI 1023015989

Medicare Profile & Education

Medical School

Other

Graduation Year

1988

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Specialist in Tucson, AZ

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

38 Yrs +8.3 yrs vs City Avg

City Avg: 29.7 Yrs

State Avg: 35.9 Yrs

Regional Practice Density

89 Specialists

Practicing in Tucson, AZ (826 Statewide)

Telehealth Adoption Rate

2.2% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

80.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Mccallum (38 Years) 38 Yrs

Tucson Specialty Average (29.7 Years) 29.7 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 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 monito	294	289	$136.38	$5.50
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	108	108	$409.08	$164.59
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	88	88	$1076.14	$246.12
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	68	67	$950.59	$102.96
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	58	58	$860.09	$173.83
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	52	48	$313.95	$127.21
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	47	46	$900.31	$178.82
45378 Diagnostic exam of large bowel using a flexible endoscope	29	29	$876.88	$179.90
45380 Biopsy of large bowel using an endoscope	27	27	$1057.84	$141.51
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	22	22	$855.34	$95.26
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$275.13	$109.95

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 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 monito	313	311	$136.89	$5.26
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	131	131	$410.47	$162.59
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	102	102	$1133.00	$244.80
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	85	83	$943.51	$101.20
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	68	68	$847.38	$178.43
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	64	61	$316.09	$125.75
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	51	51	$847.91	$177.40
99213 Established patient office or other outpatient visit, typically 15 minutes	49	46	$223.16	$87.41
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	39	39	$275.58	$110.18
45378 Diagnostic exam of large bowel using a flexible endoscope	37	37	$848.97	$177.26
45380 Biopsy of large bowel using an endoscope	30	30	$1087.34	$170.87
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	25	25	$730.06	$97.85

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 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 monito	258	257	$56.45	$5.37
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	124	124	$223.03	$164.32
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	100	100	$813.21	$247.43
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	97	97	$576.67	$110.18
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	64	64	$660.86	$183.08
45378 Diagnostic exam of large bowel using a flexible endoscope	58	58	$671.63	$182.94
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	57	57	$167.18	$110.80
99213 Established patient office or other outpatient visit, typically 15 minutes	56	52	$112.22	$86.15
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	51	51	$192.65	$126.75
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	49	49	$669.09	$181.45
45380 Biopsy of large bowel using an endoscope	41	41	$674.05	$158.52
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	32	32	$517.74	$94.88

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 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 monito	260	259	$25.00	$5.47
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	114	114	$135.00	$111.54
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	94	94	$195.00	$167.17
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	91	91	$700.00	$254.45
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	69	69	$500.00	$125.49
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	63	63	$600.00	$186.23
45378 Diagnostic exam of large bowel using a flexible endoscope	49	48	$604.08	$182.40
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	49	48	$135.61	$125.10
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	39	39	$434.62	$102.25
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	38	38	$610.53	$186.53
45380 Biopsy of large bowel using an endoscope	36	36	$600.00	$149.69
99213 Established patient office or other outpatient visit, typically 15 minutes	33	32	$85.00	$85.91
99202 New patient office or other outpatient visit, typically 20 minutes	13	13	$95.00	$72.52

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 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 monito	253	253	$25.00	$5.65
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	162	162	$195.00	$161.76
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	108	108	$700.00	$260.98
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	72	72	$135.00	$107.11
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	70	69	$500.00	$113.64
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	65	65	$121.15	$107.69
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	63	63	$600.00	$190.20
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	41	41	$600.00	$188.67
45380 Biopsy of large bowel using an endoscope	40	40	$600.00	$148.55
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	32	32	$425.00	$109.94
45378 Diagnostic exam of large bowel using a flexible endoscope	30	30	$600.00	$187.08
99213 Established patient office or other outpatient visit, typically 15 minutes	20	20	$87.50	$74.70

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 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 monito	304	301	$25.00	$5.56
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	214	214	$195.00	$161.84
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	129	129	$700.00	$260.33
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	102	102	$500.00	$124.49
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	88	83	$120.85	$107.32
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	73	73	$135.00	$106.77
45380 Biopsy of large bowel using an endoscope	50	50	$600.00	$159.79
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	48	48	$600.00	$188.19
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	44	44	$600.00	$188.49
45378 Diagnostic exam of large bowel using a flexible endoscope	44	44	$600.00	$186.81
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	35	35	$425.00	$108.97
99213 Established patient office or other outpatient visit, typically 15 minutes	25	24	$87.00	$73.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 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 monito	335	334	$25.00	$5.51
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	206	206	$195.00	$161.12
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	153	153	$701.31	$257.44
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	118	115	$500.00	$114.84
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	114	104	$120.66	$105.41
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	100	100	$135.00	$105.24
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	65	65	$600.00	$184.17
45380 Biopsy of large bowel using an endoscope	61	61	$600.00	$145.20
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	59	59	$600.00	$184.88
45378 Diagnostic exam of large bowel using a flexible endoscope	46	46	$604.35	$184.62
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	43	42	$433.72	$104.58
99213 Established patient office or other outpatient visit, typically 15 minutes	34	32	$86.47	$71.75

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0500 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 monito	243	239	$25.00	$5.37
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	183	183	$195.00	$156.84
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	125	125	$700.00	$250.31
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	112	109	$503.35	$117.51
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	98	91	$122.30	$101.00
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	94	94	$135.00	$103.29
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	82	82	$600.00	$181.88
45380 Biopsy of large bowel using an endoscope	62	62	$603.23	$122.14
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	47	47	$600.00	$182.47
45378 Diagnostic exam of large bowel using a flexible endoscope	36	36	$600.00	$183.22
99213 Established patient office or other outpatient visit, typically 15 minutes	21	21	$85.00	$69.82
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	20	20	$425.00	$106.53
43249 Balloon dilation of esophagus using an endoscope	13	12	$500.00	$152.53

Medical Specialties & State Licenses

Specialist Primary Specialty

NUCC Taxonomy Code: 174400000X

State License AZ 30996

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

739683 (AZ)

Hospital & Practice Group Affiliations

Tucson Gastroenterology Specialists, Pc

3040 N Swan Rd, Tucson, AZ 857121206

Phone: 5203273454

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

4 Associated Practitioners

Dr. John Mcnerney , MD

Specialist

NPI 1568469583

Doctor of Medicine (M.D.)

Helen Fleischman , MSN, FNP-C

Nurse Practitioner

NPI 1619953593

Master of Science in Nursing, Family Nurse Practitioner (Certified)

Dr. Anis Hanna , MD

Specialist

NPI 1639136245

Doctor of Medicine (M.D.)

Suzanna Galbraith , FNP-C

Nurse Practitioner - Family

NPI 1760147573

Family Nurse Practitioner (Certified)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

📍

Updated Practice Location February 15, 2024

Registered at 3040 N. SWAN RD STE B, TUCSON, AZ 857121206 (Tel: 5203273454)

📍

Updated Business Mailing Address February 15, 2024

Registered at 3040 N. SWAN RD STE B, TUCSON, AZ 857121206 (Tel: 5203273454)

✅

NPI Profile Active August 23, 2013

NPI status registered as active in NPPES database

📍

Updated Practice Location August 23, 2013

Registered at 1521 E TANGERINE RD, SUITE 283, ORO VALLEY, AZ 857556225 (Tel: 5208183680)

📍

Updated Business Mailing Address August 23, 2013

Registered at 1521 E TANGERINE RD, SUITE 283, ORO VALLEY, AZ 857556225 (Tel: 5208183680)

👤

Provider Name / Credentials Updated August 23, 2013

Recorded as ROBERT MCCALLUM, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 23, 2013

Specialist (License #30996 in AZ)

🟢

Initial NPI Registration & Enumeration February 21, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1134264427

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: February 21, 2007

Last Update: February 15, 2024

Sole Proprietor: No

Update or Correct Profile

Mailing Address

3040 N. Swan Rd Ste B

Tucson, AZ 857121206

Phone: 5203273454

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.