Medicare Enrolled
Dr. John Horwhat, M.D.
Gastroenterology · Lancaster, PA
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. Horwhat 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. Horwhat?
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What this data tells you about Dr. Horwhat
Dr. John Horwhat is a gastroenterology specialist in Lancaster, PA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Horwhat performed 481 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Horwhat received a total of $5,077 from 30 pharmaceutical and/or device companies across 189 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. Horwhat 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.
✓ 19 years of NPI registration
▲ Top 50% volume in PA
$5,077 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗481
Medicare services
Top 50% in PA for gastroenterology
Not available
Unique patients (not deduplicated)
$119
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 |
|---|---|---|---|
| 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. |
113 | $186 | $1,025 |
| 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. |
61 | $68 | $645 |
| 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. |
41 | $109 | $875 |
| 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. |
33 | $63 | $185 |
| 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. |
32 | $97 | $240 |
| 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. |
31 | $79 | $270 |
| Upper endoscopy (EGD) A diagnostic exam of the esophagus, stomach, and upper small bowel using a flexible endoscope. |
21 | $67 | $530 |
| Hospital follow-up visit, low complexity Follow-up hospital visit for an established patient with straightforward or low-level medical decision making. The visit requires at least 25 minutes of time spent on the day of service. |
20 | $38 | $85 |
| 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. |
18 | $240 | $1,010 |
| Endoscopic removal of esophagus, stomach, or small bowel polyps This procedure uses an endoscope and a mechanical snare to remove polyps or growths from the esophagus, stomach, or upper small bowel. |
17 | $120 | $475 |
| Endoscopic destruction of esophagus, stomach, or bowel growth Removal of a polyp or growth in the esophagus, stomach, or upper small intestine using a flexible tube with a camera. The procedure is performed through the mouth to access and destroy the abnormal tissue. |
15 | $164 | $650 |
| 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. |
14 | $115 | $410 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
14 | $61 | $120 |
| Endoscopic ultrasound-guided needle biopsy A procedure using an ultrasound-equipped endoscope to guide a needle for tissue sampling of the esophagus, stomach, or upper small bowel. |
13 | $161 | $695 |
| Endoscopic ultrasound of esophagus, stomach, or upper small bowel An ultrasound exam of the esophagus, stomach, and/or upper small bowel performed using a flexible endoscope. |
13 | $157 | $575 |
| Initial hospital admission, low complexity Initial hospital inpatient or observation care for a new patient involving straightforward or low-level medical decision making, with at least 40 minutes total time on the date of the encounter. |
13 | $64 | $150 |
| Endoscopic ultrasound of esophagus, stomach, or small bowel An ultrasound exam of the esophagus, stomach, and/or upper small bowel performed using a flexible endoscope inserted through the mouth. |
12 | $135 | $390 |
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 ↗$5,077
Total received (2018-2024)
Avg $725/year across 7 years
Top 31% in PA for gastroenterology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
30
Companies
189
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
$1,062
2023
$986
2022
$553
2021
$276
2020
$384
2019
$966
2018
$850
Payments by company (2024)
ABBVIE INC.
$291
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$231
Ardelyx, Inc.
$125
Phathom Pharmaceuticals, Inc.
$122
Boston Scientific Corporation
$84
AIMMUNE THERAPEUTICS, INC.
$58
Janssen Biotech, Inc.
$51
Celgene Corporation
$41
GENZYME CORPORATION
$28
Micro-tech Endoscopy USA, Inc.
$18
Fresenius Kabi USA, LLC
$13
Top 3 companies account for 60.9% of 2024 payments
All-time payments by company (2018-2024) ›
AbbVie, Inc.
$853
ABBVIE INC.
$829
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$647
Boston Scientific Corporation
$468
Takeda Pharmaceuticals U.S.A., Inc.
$447
Ardelyx, Inc.
$278
AbbVie Inc.
$240
Synergy Pharmaceuticals Inc
$163
Olympus America Inc.
$136
Phathom Pharmaceuticals, Inc.
$122
Celgene Corporation
$120
Janssen Biotech, Inc.
$78
BOSTON SCIENTIFIC CORPORATION
$70
Micro-tech Endoscopy USA, Inc.
$67
Ironwood Pharmaceuticals, Inc
$64
AIMMUNE THERAPEUTICS, INC.
$58
PFIZER INC.
$58
GENZYME CORPORATION
$51
Intercept Pharmaceuticals, Inc.
$49
NESTLE HEALTHCARE NUTRITION INC.
$46
Apollo Endosurgery US Inc
$39
Boehringer Ingelheim Pharmaceuticals, Inc.
$35
QOL Medical, LLC
$34
Ferring Pharmaceuticals Inc.
$31
Exact Sciences Corporation
$20
Aries Pharmaceuticals, Inc.
$17
Merck Sharp & Dohme LLC
$17
Shionogi Inc
$15
Fresenius Kabi USA, LLC
$13
Shire North American Group Inc
$12
Top 3 companies account for 45.9% of all-time payments
Associated products mentioned in payments ›
AXIOS · All Products · Amitiza · CIMZIA · CREON · CYLTEZO · Cologuard Collection Kit · Creon · DIFICID · DUPIXENT · Dexilant · ELEVIEW · ENTYVIO · EXALT BX 2 · EXALT MODEL D CONTROLLER · EXALT Model D · Entyvio · GATTEX · GENERAL BILIARY DEVICES · HUMIRA · Humira · IBSRELA · IDACIO · LINZESS · Linzess · MAVYRET · MOTEGRITY · Mavyret · Mulpleta · OCALIVA · Olympus Biliary Devices · REBYOTA · RINVOQ · Resolution 360 Clip · SKYRIZI · SPYSCOPE · STELARA · Sucraid · SureClip · TREMFYA · TRULANCE · Trulance · VIBERZI · VOQUEZNA · X-Tack Endoscopic HeliX Tacking System · XELJANZ · XIFAXAN · ZENPEP · ZEPOSIA
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
95
County median income
$83,703
Nearest hospital to ZIP centroid (approximate)
PENN STATE HEALTH LANCASTER 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. Horwhat is a clinical cardiology specialist, with moderate Medicare volume, with 19 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. Horwhat experienced with colon polyp removal with endoscopic snare?
Based on Medicare claims data, Dr. Horwhat performed 113 colon polyp removal with endoscopic snare 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. Horwhat receive payments from pharmaceutical companies?
Yes. Dr. Horwhat received a total of $5,077 from 30 companies across 189 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. Horwhat's costs compare to other gastroenterologists in Lancaster?
Dr. Horwhat's average Medicare payment per service is $119. 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. Horwhat) 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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