Dennis Chen, MD
NPI 1467715235 · Gastroenterology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dennis Chen, MD is a Gastroenterology Physician provider in Chicago, IL (NPI 1467715235).
Provider details
- NPI number
- 1467715235
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036.149488 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
398 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Exam of Common Bile And/Or Pancreatic Duct Using a Flexible Endoscope43273 | 55 | $132 |
| Removal of Stone Or Debris From Bile Or Pancreatic Duct Using a Flexible Endoscope43264 | 52 | $94 |
| Review By Radiologist of Image From Tube Placement Into Bile Duct Using an Endoscope74328 | 48 | $25 |
| Ultrasound Guided Needle Aspiration Or Biopsy of Esophagus Using a Flexible Endoscope43238 | 43 | $227 |
| Replacement of Stent in Pancreatic Or Bile Duct Using a Flexible Endoscope43276 | 43 | $402 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 17 | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,057 across 26 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-18
- Last updated
- 2022-01-25
- Certified
- 2022-01-25
Frequently asked questions
- What is Dennis Chen's NPI number?
- Dennis Chen's National Provider Identifier (NPI) is 1467715235, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Chen's specialty?
- Dennis Chen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Dennis Chen located?
- Dennis Chen's practice location on file with NPPES is 5841 S Maryland Ave # Mc4076, Chicago, IL 60637-1443.
- What is Dennis Chen's phone number?
- The practice phone number listed in the NPPES registry for Dennis Chen is (773) 834-4508.
- Does Dennis Chen accept Medicare?
- Dennis Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dennis Chen's NPI active?
- Yes — Dennis Chen's NPI (1467715235) is active in the NPPES registry as of the last update on 2022-01-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.