Medicare Enrolled
Dr. Nizar Ramzan, M.D.,
Gastroenterology · Houston, TX
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. Ramzan 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. Ramzan?
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What this data tells you about Dr. Ramzan
Dr. Nizar Ramzan is a gastroenterology specialist in Houston, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Ramzan performed 2,650 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Ramzan received a total of $15,598 from 52 pharmaceutical and/or device companies across 959 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Ramzan 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 of NPI registration
▲ Top 4% volume in TX
$15,598 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗2,650
Medicare services
Top 4% in TX for gastroenterology
Not available
Unique patients (not deduplicated)
$85
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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 |
|---|---|---|---|
| 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. |
563 | $91 | $256 |
| 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. |
370 | $64 | $146 |
| Chronic care management, additional 20 min/month This service covers an extra 20 minutes of clinical staff time directed by a healthcare professional for managing two or more chronic conditions each calendar month. |
321 | $36 | $115 |
| 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. |
220 | $114 | $350 |
| 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. |
204 | $62 | $217 |
| 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. |
196 | $139 | $800 |
| 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. |
190 | $71 | $400 |
| Chronic care management, first 20 min/month This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions. |
184 | $48 | $82 |
| 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. |
94 | $176 | $850 |
| Hydrogen breath test A test that measures hydrogen levels in your breath to help evaluate stomach and bowel symptoms. |
61 | $60 | $164 |
| 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. |
47 | $120 | $291 |
| 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. |
44 | $176 | $766 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
26 | $56 | $265 |
| 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. |
24 | $105 | $450 |
| Hemorrhoid banding via sigmoidoscopy A procedure to treat hemorrhoids by placing a small rubber band around the base of the tissue using a flexible tube inserted into the rectum. |
22 | $77 | $520 |
| Colonoscopy A diagnostic exam of the large bowel using a flexible endoscope to visualize the interior of the colon. |
22 | $135 | $768 |
| 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. |
19 | $209 | $661 |
| Colonoscopy for colorectal cancer screening A colonoscopy performed to screen for colorectal cancer in individuals who are not at high risk for the disease. |
17 | $171 | $768 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
13 | $100 | $276 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
13 | $64 | $185 |
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. These counts do not measure clinical quality or years of experience.
Industry Payment Transparency
Open Payments through 2024 ↗$15,598
Total received (2018-2024)
Avg $2,228/year across 7 years
Top 13% in TX for gastroenterology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
52
Companies
959
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,208
2023
$2,809
2022
$2,650
2021
$2,239
2020
$1,283
2019
$1,509
2018
$1,900
Payments by company (2024)
ABBVIE INC.
$456
Takeda Pharmaceuticals U.S.A., Inc.
$380
PFIZER INC.
$289
Gilead Sciences, Inc.
$275
Celgene Corporation
$247
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$166
IRONWOOD PHARMACEUTICALS, INC
$161
Lilly USA, LLC
$110
Merck Sharp & Dohme LLC
$107
Regeneron Healthcare Solutions, Inc.
$102
Ardelyx, Inc.
$99
AIMMUNE THERAPEUTICS, INC.
$96
QOL Medical, LLC
$95
Phathom Pharmaceuticals, Inc.
$88
Intercept Pharmaceuticals, Inc.
$70
Janssen Biotech, Inc.
$66
Ipsen Biopharmaceuticals, Inc
$63
GENZYME CORPORATION
$57
Celltrion USA Inc.
$50
Lucid Diagnostics Inc.
$44
Biocon Biologics Inc
$44
EVOKE PHARMA, INC.
$40
Alnylam Pharmaceuticals Inc.
$29
Ferring Pharmaceuticals Inc.
$22
Novo Nordisk Inc
$21
Braintree Laboratories, Inc.
$14
Medtronic, Inc.
$14
Top 3 companies account for 35.1% of 2024 payments
All-time payments by company (2018-2024) ›
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$2,042
Takeda Pharmaceuticals U.S.A., Inc.
$1,463
ABBVIE INC.
$1,401
PFIZER INC.
$1,198
Gilead Sciences, Inc.
$1,048
AbbVie Inc.
$949
AbbVie, Inc.
$836
Celgene Corporation
$676
Ferring Pharmaceuticals Inc.
$544
Janssen Biotech, Inc.
$499
Ironwood Pharmaceuticals, Inc
$449
Nestle HealthCare Nutrition Inc.
$449
QOL Medical, LLC
$375
Regeneron Healthcare Solutions, Inc.
$323
UCB, Inc.
$312
Ardelyx, Inc.
$269
Intercept Pharmaceuticals, Inc.
$243
Daiichi Sankyo Inc.
$228
IRONWOOD PHARMACEUTICALS, INC
$208
GENZYME CORPORATION
$164
Allergan Inc.
$133
Alfasigma USA, Inc.
$122
Phathom Pharmaceuticals, Inc.
$113
Lilly USA, LLC
$110
Merck Sharp & Dohme LLC
$107
Mylan Institutional Inc.
$106
Synergy Pharmaceuticals Inc
$99
AIMMUNE THERAPEUTICS, INC.
$96
Amgen Inc.
$95
RedHill Biopharma Inc.
$94
Celltrion USA Inc.
$87
INTERCEPT PHARMACEUTICALS, INC.
$72
Romark Laboratories, LC
$68
Braintree Laboratories, Inc.
$68
Ipsen Biopharmaceuticals, Inc
$63
NESTLE HEALTHCARE NUTRITION INC.
$51
Lucid Diagnostics Inc.
$44
Biocon Biologics Inc
$44
Boehringer Ingelheim Pharmaceuticals, Inc.
$42
Novo Nordisk Inc
$41
EVOKE PHARMA, INC.
$40
Medtronic, Inc.
$31
Merck Sharp & Dohme Corporation
$30
Alnylam Pharmaceuticals Inc.
$29
Pharmacosmos Therapeutics Inc.
$23
CSL Behring
$20
CapsoVision, Inc.
$19
Medtronic Vascular, Inc.
$16
AMAG Pharmaceuticals, Inc.
$15
Shire North American Group Inc
$14
Axonics, Inc.
$13
Allergan, Inc.
$13
Top 3 companies account for 31.5% of all-time payments
Associated products mentioned in payments ›
AMJEVITA · APRISO · AVSOLA · Aemcolo · Alinia Tablets 500mg 30 count bottle · Amitiza · Axonics · BYSTOLIC · Bylvay · CIMZIA · CLENPIQ · CREON · CYLTEZO · CapsoCam Plus · Cimzia · Creon · DIFICID · DUPIXENT · Dexilant · ENTYVIO · Entyvio · FERAHEME · GATTEX · GI Genius · GIMOTI · GIVLAARI · GLASSIA · HUMIRA · HawkOne · Hulio · Humira · IBSRELA · INFLECTRA · INJECTAFER · INTERSTIM · IQIRVO · Kcentra · LINZESS · Linzess · MAVYRET · MOTEGRITY · Mavyret · Monoferric · Movantik · OCALIVA · OMVOH · REBYOTA · REMICADE · RINVOQ · SKYRIZI · STELARA · SUCRAID · SUFLAVE · SUPREP BOWEL PREP · SUTAB · Sucraid · TRULANCE · Talicia · Trulance · UCERIS · UCERIS TABLETS · VEGZELMA · VIBERZI · VOQUEZNA · VOWST · Wegovy · XELJANZ · XIFAXAN · XIFAXANIBSD · YUFLYMA · ZENPEP · ZEPOSIA · Zelnorm
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Geographic Context
Gastroenterologists in nearby ZIP areas
251
County median income
$73,104
Nearest hospital to ZIP centroid (approximate)
MEMORIAL HERMANN - TEXAS MEDICAL CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. Ramzan is a clinical cardiology specialist, with above-average Medicare volume (top 4% in TX), 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. Ramzan experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Ramzan performed 563 office visit, established patient (30-39 min) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Ramzan receive payments from pharmaceutical companies?
Yes. Dr. Ramzan received a total of $15,598 from 52 companies across 959 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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. Ramzan's costs compare to other gastroenterologists in Houston?
Dr. Ramzan's average Medicare payment per service is $85. 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. Ramzan) 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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