Doctor profile · Federal record
Dr. Glen Vander Zalm, MD
Gastroenterology Physician · Orlando, FL
- NPI 1528033578
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3885 Oakwater Cir
Orlando, FL 328066257
(407) 851-5600
fax (407) 438-9585
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- March 24, 2011
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Florida #ME91815
- Medicaid
- FL #271650000
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1528033578. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
545
Distinct HCPCS
10
Medicare allowed
$69,639
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 176 | 137 | $89 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 127 | 115 | $124 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 68 | 68 | $247 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 49 | 49 | $102 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 26 | 26 | $164 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 25 | 25 | $111 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 21 | 21 | $178 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 16 | 16 | $130 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 14 | 14 | $55 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 12 | 12 | $71 |
In context: peer comparison
Among 28 peers in this city , average services per provider: 82. This provider delivers 6.6× the peer median.Open Payments
Industry payments received
All-time total
$1,055
Transactions
57
Manufacturers
13
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 29 | $462.28 | |
| PFIZER INC. | 10 | $173.89 | |
| Phathom Pharmaceuticals, Inc. | 3 | $82.48 | |
| Janssen Biotech, Inc. | 3 | $80.22 | |
| VIVUS LLC | 2 | $42.47 | |
| Celgene Corporation | 2 | $41.77 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 2 | $34.25 | |
| Madrigal Pharmaceuticals | 1 | $28.80 | |
| Intercept Pharmaceuticals, Inc. | 1 | $23.40 | |
| Braintree Laboratories, Inc. | 1 | $23.28 | |
| AIMMUNE THERAPEUTICS, INC. | 1 | $23.11 | |
| RedHill Biopharma Inc. | 1 | $20.65 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $18.11 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
751
Patients
328
Total drug cost
$99,029
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 343 | 121 | $6,255 |
| Omeprazole | Generic | 123 | 39 | $3,004 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 65 | 65 | $945 |
| Esomeprazole Magnesium | Generic | 34 | 0 | $2,257 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 30 | 30 | $2,216 |
| Peg-3350 And Electrolytes (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 27 | 27 | $544 |
| Famotidine | Generic | 24 | 0 | $249 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 23 | 11 | $2,287 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 21 | 21 | $3,613 |
| Creon (Lipase/Protease/Amylase) | Brand | 20 | 0 | $75,043 |
Frequently asked questions
What is Dr. Glen Vander Zalm's medical specialty?
Dr. Glen Vander Zalm practices Gastroenterology Physician in Orlando, FL.
Where does Dr. Glen Vander Zalm practice?
Dr. Glen Vander Zalm practices at 3885 Oakwater Cir, Orlando, FL 328066257. Office phone: 4078515600.
What is Dr. Glen Vander Zalm's NPI?
Dr. Glen Vander Zalm's National Provider Identifier (NPI) is 1528033578, issued by NPPES.
What procedures does Dr. Glen Vander Zalm commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.