Medicare Enrolled
Dr. Jack Feng, M.D.
Gastroenterology · Mission Viejo, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Feng from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
Are you Dr. Feng?
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What this data tells you about Dr. Feng
Dr. Jack Feng is a gastroenterology specialist in Mission Viejo, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Feng performed 982 Medicare services across 954 unique beneficiaries.
Between the years covered by Open Payments, Dr. Feng received a total of $15,024 from 49 pharmaceutical and/or device companies across 644 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in gastroenterology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Feng is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years in practice
▲ Top 35% volume in CA
$15,024 industry payments
Medicare Practice Summary
Medicare Utilization ↗982
Medicare services
Top 35% in CA for gastroenterology
954
Unique beneficiaries
$101
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~49 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Colonoscopy with biopsy A procedure to collect tissue samples from the large intestine using a flexible tube with a camera. The samples are examined to check for abnormalities or disease. |
204 | $63 | $1,295 |
| Colon polyp removal with endoscopic snare This procedure removes polyps or growths from the large bowel using a flexible tube with a camera and a wire loop tool. The snare is used to cut off the growths during the examination. |
154 | $165 | $1,332 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
122 | $106 | $345 |
| Moderate sedation during GI endoscopy Sedation services provided by the physician performing a gastrointestinal endoscopic procedure. This requires an independent trained observer to assist in monitoring the patient. |
116 | $4 | $163 |
| Upper GI endoscopy with biopsy A procedure to collect tissue samples from the esophagus, stomach, or upper small intestine using a flexible tube with a camera. The samples are examined to check for abnormalities. |
104 | $51 | $1,116 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
65 | $130 | $447 |
| Destruction of large bowel polyp via endoscope Removal of a polyp or growth in the large intestine using a flexible tube with a camera. The procedure is performed through the endoscope to destroy the tissue. |
44 | $178 | $7,846 |
| Removal of large bowel tissue using flexible endoscope A procedure to remove tissue from the large intestine using a flexible tube with a camera. The endoscope allows the provider to access and excise the tissue directly. |
44 | $282 | $919 |
| Balloon dilation of esophagus, stomach, or upper small bowel, less than 3.0 cm A procedure using a flexible endoscope to widen a narrowed section of the esophagus, stomach, or upper small bowel with a balloon that is less than 3.0 cm in length. |
33 | $89 | $3,327 |
| Colonoscopy for colorectal cancer screening, high risk A colonoscopy performed to screen for colorectal cancer in individuals identified as being at high risk for the disease. |
23 | $192 | $1,008 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
22 | $73 | $245 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
20 | $90 | $302 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
16 | $154 | $485 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
15 | $8 | $13 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
Industry Payment Transparency
Open Payments through 2024 ↗$15,024
Total received (2018-2024)
Avg $2,146/year across 7 years
Top 14% in CA for gastroenterology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
49
Companies
644
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$14,934 (99.4%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$75 (0.5%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$15 (0.1%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,786
2023
$3,679
2022
$3,024
2021
$166
2020
$506
2019
$1,842
2018
$2,021
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$1,443
Janssen Biotech, Inc.
$466
AIMMUNE THERAPEUTICS, INC.
$346
Phathom Pharmaceuticals, Inc.
$270
Madrigal Pharmaceuticals
$235
GENZYME CORPORATION
$212
Regeneron Healthcare Solutions, Inc.
$190
Takeda Pharmaceuticals U.S.A., Inc.
$155
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$102
Gilead Sciences, Inc.
$68
Ardelyx, Inc.
$56
Medtronic, Inc.
$54
Ferring Pharmaceuticals Inc.
$43
Lilly USA, LLC
$39
Celgene Corporation
$33
Alcresta Therapeutics, Inc.
$22
Braintree Laboratories, Inc.
$21
ALBIREO PHARMA, INC.
$18
Celltrion USA Inc.
$15
Top 3 companies account for 59.6% of 2024 payments
All-time payments by company (2018-2024) ›
ABBVIE INC.
$3,771
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$1,435
AbbVie, Inc.
$968
Janssen Biotech, Inc.
$845
Takeda Pharmaceuticals U.S.A., Inc.
$815
Nestle HealthCare Nutrition Inc.
$712
GENZYME CORPORATION
$516
Celgene Corporation
$493
Allergan Inc.
$411
NESTLE HEALTHCARE NUTRITION INC.
$407
Regeneron Healthcare Solutions, Inc.
$404
AIMMUNE THERAPEUTICS, INC.
$346
AbbVie Inc.
$309
PFIZER INC.
$296
Phathom Pharmaceuticals, Inc.
$292
Janssen Scientific Affairs, LLC
$267
Gilead Sciences, Inc.
$260
E.R. Squibb & Sons, L.L.C.
$243
Madrigal Pharmaceuticals
$235
Braintree Laboratories, Inc.
$192
ERBE USA Inc
$188
Covidien LP
$142
Intuitive Surgical, Inc.
$140
INTERCEPT PHARMACEUTICALS, INC.
$120
Ferring Pharmaceuticals Inc.
$99
Ironwood Pharmaceuticals, Inc
$95
Synergy Pharmaceuticals Inc
$94
Merck Sharp & Dohme Corporation
$81
Intercept Pharmaceuticals, Inc.
$75
Prometheus Laboratories Inc.
$74
RedHill Biopharma Inc.
$74
Daiichi Sankyo Inc.
$69
VIVUS, Inc.
$67
Medtronic, Inc.
$66
Ardelyx, Inc.
$56
Shionogi Inc
$44
Alfasigma USA, Inc.
$44
Lilly USA, LLC
$39
Fresenius Kabi USA, LLC
$33
Endogastric Solutions, Inc
$30
Allergan, Inc.
$29
Alcresta Therapeutics, Inc.
$22
Axonics, Inc.
$21
Ethicon US, LLC
$20
W. L. Gore & Associates, Inc.
$19
ALBIREO PHARMA, INC.
$18
Exact Sciences Corporation
$17
Boston Scientific Corporation
$15
Celltrion USA Inc.
$15
Top 3 companies account for 41.1% of all-time payments
Associated products mentioned in payments ›
Amitiza · Axonics · Bravo · CARDIOFORM Septal Occluder · CIMZIA · CLENPIQ · CREON · Cologuard Collection Kit · Creon · DIFICID · DUPIXENT · Da Vinci Surgical System · ENTYVIO · ERBE · ESOPHYX · Entyvio · Epclusa · GATTEX · GI GENIUS · General - EndoChoice · HUMIRA · Humira · IBSRELA · INFLECTRA · INJECTAFER · IQIRVO · LILETTA · LINX Reflux Management System · LINZESS · Linzess · MOTEGRITY · MOTOFEN · Mavyret · Motegrity · Mulpleta · NEXPOWDER · OCALIVA · OMVOH · PANCREAZE · QSYMIA · REBYOTA · RELIZORB · REMICADE · RESMETIROM · REZDIFFRA · RINVOQ · SKYRIZI · STELARA · SUFLAVE · SUTAB · Symproic · TREMFYA · TRULANCE · Talicia · Trulance · UCERIS · VIBERZI · VIO 300 D · VOQUEZNA · VOWST · VPRIV · XELJANZ · XIFAXAN · XIFAXANIBSD · ZENPEP · ZEPOSIA · ZYMFENTRA
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (99%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Gastroenterologists within 10 mi
176
Per 100K population
5.6
County median income
$113,702
Nearest hospital
PROVIDENCE MISSION HOSPITAL
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Feng is a clinical cardiology specialist, with moderate Medicare volume, with low-engagement industry engagement in the top 14% of CA peers, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Feng experienced with colonoscopy with biopsy?
Based on Medicare claims data, Dr. Feng performed 204 colonoscopy with biopsy services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Feng receive payments from pharmaceutical companies?
Yes. Dr. Feng received a total of $15,024 from 49 companies across 644 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Feng's costs compare to other gastroenterologists in Mission Viejo?
Dr. Feng's average Medicare payment per service is $101. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Feng) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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