Doctor profile · Federal record
Dr. Michael Demyen, MD
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Denville, NJ
- NPI 1568611465
- Accepts Medicare
- MIPS 93.6 / 100 · 2023
- 26 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
16 Pocono Road, Suite 201
Denville, NJ 078342901
(973) 627-4430
fax (973) 586-2336
Credentials & registration
- NPI registered
- September 2008 — 18 yrs on file
- Profile last updated
- July 21, 2022
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New Jersey #25MA07864700
- Medicaid
- NJ #019905
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1568611465. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
445
Distinct HCPCS
9
Medicare allowed
$57,744
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 159 | 82 | $85 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 68 | 54 | $139 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 52 | 45 | $139 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 47 | 46 | $99 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 47 | 47 | $179 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 21 | 20 | $262 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 19 | 19 | $190 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 18 | 18 | $151 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 14 | 13 | $185 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 92. This provider delivers 4.8× the peer median.Open Payments
Industry payments received
All-time total
$1,271
Transactions
69
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| IRONWOOD PHARMACEUTICALS, INC | 11 | $237.63 | |
| Ardelyx, Inc. | 8 | $230.86 | |
| ABBVIE INC. | 13 | $169.70 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 11 | $152.14 | |
| Janssen Biotech, Inc. | 6 | $92.99 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 5 | $92.21 | |
| AIMMUNE THERAPEUTICS, INC. | 3 | $45.02 | |
| Madrigal Pharmaceuticals | 1 | $39.90 | |
| Abbott Laboratories | 2 | $37.95 | |
| Ferring Pharmaceuticals Inc. | 2 | $33.44 | |
| GENZYME CORPORATION | 2 | $30.93 | |
| Regeneron Healthcare Solutions, Inc. | 2 | $29.44 | |
| UCB, Inc. | 1 | $19.19 | |
| Celgene Corporation | 1 | $16.88 | |
| Celltrion USA Inc. | 1 | $16.05 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,201
Patients
554
Total drug cost
$663,965
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 224 | 101 | $4,610 |
| Pantoprazole Sodium | Generic | 216 | 94 | $3,881 |
| Linzess (Linaclotide) | Brand | 134 | 40 | $140,883 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 125 | 123 | $2,033 |
| Creon (Lipase/Protease/Amylase) | Brand | 90 | 25 | $273,362 |
| Famotidine | Generic | 75 | 34 | $1,496 |
| Dicyclomine Hcl | Generic | 69 | 28 | $2,598 |
| Mesalamine | Generic | 46 | 14 | $32,533 |
| Procto-Med Hc (Hydrocortisone) | Brand | 41 | 16 | $898 |
| Sucralfate | Generic | 41 | 0 | $4,327 |
Frequently asked questions
What is Dr. Michael Demyen's medical specialty?
Dr. Michael Demyen practices Gastroenterology Physician in Denville, NJ.
Where does Dr. Michael Demyen practice?
Dr. Michael Demyen practices at 16 Pocono Road, Denville, NJ 078342901. Office phone: 9736274430.
What is Dr. Michael Demyen's NPI?
Dr. Michael Demyen's National Provider Identifier (NPI) is 1568611465, issued by NPPES.
Does Dr. Michael Demyen accept Medicare assignment?
Yes. Dr. Michael Demyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Demyen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99214); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.