Doctor profile · Federal record
Dr. Barbara Maccollum, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Phoenix, AZ
- NPI 1215925821
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 42 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1300 N 12Th St, Suite 613
Phoenix, AZ 850062848
(602) 254-5321
fax (602) 254-6582 - Mailing address
-
3020 E Camelback RD, Suite 301
Phoenix, AZ 850165059
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- February 17, 2017
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Arizona #15579
- Medicaid
- AZ #260240
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1215925821. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,049
Distinct HCPCS
10
Medicare allowed
$122,023
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99439 |
Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | 158 | 15 | $46 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 141 | 116 | $123 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 119 | 107 | $85 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 116 | 116 | $160 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 100 | 100 | $141 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 95 | 15 | $60 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 84 | 84 | $83 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 78 | 78 | $243 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 53 | 53 | $108 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 47 | 47 | $176 |
In context: peer comparison
Among 19 peers in Phoenix Gastroenterology Physician, average services per provider: 61. This provider delivers 17× the peer median.Open Payments
Industry payments received
All-time total
$39
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Medtronic, INC. | 1 | $38.65 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
982
Patients
395
Total drug cost
$128,558
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Famotidine | Generic | 246 | 79 | $3,282 |
| Pantoprazole Sodium | Generic | 205 | 76 | $4,003 |
| Ondansetron Odt (Ondansetron) | Brand | 106 | 90 | $635 |
| Omeprazole | Generic | 99 | 31 | $1,240 |
| Sutab (Sod Sulf/Pot Chloride/Mag Sulf) | Brand | 88 | 88 | $14,969 |
| Linzess (Linaclotide) | Brand | 37 | 0 | $29,538 |
| Creon (Lipase/Protease/Amylase) | Brand | 33 | 0 | $45,408 |
| Sucralfate | Generic | 29 | 15 | $6,346 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 24 | 16 | $224 |
| Dicyclomine Hcl | Generic | 24 | 0 | $347 |
Frequently asked questions
What is Dr. Barbara Maccollum's medical specialty?
Dr. Barbara Maccollum practices Gastroenterology Physician in Phoenix, AZ.
Where does Dr. Barbara Maccollum practice?
Dr. Barbara Maccollum practices at 1300 N 12Th St, Phoenix, AZ 850062848. Office phone: 6022545321.
What is Dr. Barbara Maccollum's NPI?
Dr. Barbara Maccollum's National Provider Identifier (NPI) is 1215925821, issued by NPPES.
Does Dr. Barbara Maccollum accept Medicare assignment?
Yes. Dr. Barbara Maccollum accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Barbara Maccollum commonly perform?
Top Medicare-reported procedures in 2023: Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (HCPCS 99439); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.