Doctor profile · Federal record
Dr. Erik Holzwanger, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Boston, MA
- NPI 1457747776
- Accepts Medicare
- 12 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
800 Washington St
Boston, MA 021111552
(617) 636-5000 - Additional location
-
55 Lake Ave N
Worcester, MA 016550002
(508) 334-1000 - Additional location
-
736 Cambridge St
Brighton, MA 02135
(617) 562-5432 - Mailing address
-
65 Hamilton Ave
Haverhill, MA 018303313
Credentials & registration
- NPI registered
- April 2015 — 11 yrs on file
- Profile last updated
- January 5, 2026
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Massachusetts #277398
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1457747776. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
151
Distinct HCPCS
9
Medicare allowed
$18,439
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 30 | 18 | $126 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 19 | 19 | $56 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 17 | 16 | $104 | |
43273 |
Exam of common bile and/or pancreatic duct using a flexible endoscope | 16 | 14 | $125 | |
74330 |
Review by radiologist of image from tube placement into bile and pancreatic duct using an endoscope | 15 | 13 | $29 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 15 | 15 | $138 | |
43238 |
Ultrasound guided needle aspiration or biopsy of esophagus using a flexible endoscope | 14 | 12 | $219 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 14 | 14 | $240 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 11 | 11 | $80 |
In context: peer comparison
Among 78 peers in Boston Gastroenterology Physician, average services per provider: 56. This provider delivers 2.7× the peer median.Open Payments
Industry payments received
All-time total
$20,708
Transactions
28
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boston Scientific Corporation | 23 | $16,620.16 | |
| Micro-Tech Endoscopy USA, INC. | 4 | $3,955.85 | |
| Cook Medical LLC | 1 | $131.84 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
133
Patients
115
Total drug cost
$2,633
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-C (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 80 | 77 | $1,458 |
| Omeprazole | Generic | 38 | 23 | $1,134 |
| Ciprofloxacin Hcl | Generic | 15 | 15 | $41 |
Hospital affiliations
Frequently asked questions
What is Dr. Erik Holzwanger's medical specialty?
Dr. Erik Holzwanger practices Gastroenterology Physician in Boston, MA.
Where does Dr. Erik Holzwanger practice?
Dr. Erik Holzwanger practices at 800 Washington St, Boston, MA 021111552. Office phone: 6176365000.
What is Dr. Erik Holzwanger's NPI?
Dr. Erik Holzwanger's National Provider Identifier (NPI) is 1457747776, issued by NPPES.
Does Dr. Erik Holzwanger accept Medicare assignment?
Yes. Dr. Erik Holzwanger accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Erik Holzwanger commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.