Medicare Enrolled
Dr. Gregory Giesler, MD
Cardiovascular Disease · Pasadena, CA
Practice pattern: Remote Monitoring
— Significant remote device monitoring activity
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. Giesler 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. Giesler?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Giesler
Dr. Gregory Giesler is a cardiovascular disease specialist in Pasadena, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Giesler performed 20,647 Medicare services across 5,102 unique beneficiaries.
Between the years covered by Open Payments, Dr. Giesler received a total of $15,279 from 38 pharmaceutical and/or device companies across 698 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in cardiovascular disease. 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. Giesler 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 in practice
▲ Top 1% volume in CA
$15,279 industry payments
Medicare Practice Summary
Medicare Utilization ↗20,647
Medicare services
Top 1% in CA for cardiovascular disease
5,102
Unique beneficiaries
$44
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~1,087 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 |
|---|---|---|---|
| Adenosine injection, 1 mg Administration of a 1 mg dose of adenosine medication. This code is specifically for adenosine and excludes adenosine phosphate compounds. |
11,430 | $0 | $3 |
| Remote patient monitoring management, 20 min/month Management based on results from remote vital sign monitoring for the first 20 minutes per calendar month. |
1,709 | $42 | $180 |
| Remote patient monitoring device, 30 days Initial setup of devices for remote monitoring of body functions with daily data transmission or alerts. This service covers the first 30 days of the monitoring period. |
1,697 | $46 | $150 |
| 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. |
1,448 | $103 | $207 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
661 | $162 | $1,203 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
554 | $102 | $225 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
392 | $12 | $110 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
325 | $171 | $950 |
| 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. |
224 | $146 | $289 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle at rest and during stress using a special camera. |
222 | $401 | $3,545 |
| Technetium Tc-99m tetrofosmin diagnostic injection A diagnostic injection of Technetium Tc-99m tetrofosmin used for imaging studies. |
222 | $76 | $180 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram under physician supervision and review. |
211 | $55 | $375 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
208 | $35 | $115 |
| 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. |
150 | $74 | $147 |
| 2-day continuous ECG monitoring with report This procedure involves continuous electrocardiogram monitoring over a two-day period to record heart activity. A report is provided to summarize the findings from the monitoring session. |
148 | $34 | $186 |
| 30-day continuous ECG with patient-triggered event transmission and review This procedure involves continuous electrocardiogram monitoring for up to 30 days, including the transmission of patient-triggered events. A healthcare professional reviews the data and provides a report. |
145 | $793 | $1,471 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
135 | $149 | $400 |
| 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. |
127 | $127 | $325 |
| Remote pacemaker monitoring, 90 days Remote assessment of a pacemaker system, including single, dual, multiple lead, or leadless devices, performed up to 90 days apart. |
74 | $22 | $100 |
| 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. |
70 | $66 | $175 |
| Echocardiogram, transthoracic An ultrasound test that uses sound waves to create images of the heart's blood flow, valves, and chambers. |
48 | $42 | $275 |
| Stress echocardiogram with ECG monitoring An ultrasound of the heart performed while monitoring heart rhythm during rest, exercise, or medication-induced stress, followed by a review and report of the findings. |
48 | $177 | $1,027 |
| Echocardiogram with color Doppler An ultrasound of the heart that uses color imaging to visualize blood flow, measure flow rate, and assess valve function. |
47 | $21 | $263 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
47 | $75 | $145 |
| Remote physiologic monitoring setup and education Initial setup of remote monitoring equipment and patient education on its use. |
44 | $16 | $65 |
| EKG interpretation and report A standard electrocardiogram test that records the heart's electrical activity using at least 12 leads. The service includes a professional interpretation of the results and a written report. |
41 | $7 | $100 |
| Remote evaluation of implantable defibrillator system Remote assessment of a single, dual, or multiple lead implantable defibrillator system within 90 days of the previous evaluation. |
41 | $29 | $185 |
| Critical care, first 30-74 min Emergency medical care for a critically ill or injured patient lasting between 30 and 74 minutes. This service involves direct patient care and medical decision making to stabilize the patient. |
40 | $181 | $600 |
| Ultrasound of arm and leg arteries This procedure uses sound waves to create images of the blood vessels in the arms and legs. It allows healthcare providers to examine the structure and blood flow within these arteries. |
37 | $71 | $260 |
| New patient office visit, complex (60-74 min) | 33 | $169 | $352 |
| Remote vital sign monitoring management, each additional 20 minutes This code covers the time spent by a provider managing patient data from remote vital sign monitoring devices. It applies to each additional 20-minute increment beyond the initial monthly service period. |
16 | $30 | $92 |
| Repair of left upper heart chamber with implant A surgical procedure to repair the left upper chamber of the heart using an implanted device, with review by a radiologist. |
14 | $395 | $1,850 |
| Coronary angiography A procedure to insert a tube into a coronary artery to capture diagnostic images of the heart's blood vessels. |
14 | $147 | $1,325 |
| Telephone medical discussion, 5-10 minutes A phone conversation with a physician lasting between 5 and 10 minutes to discuss medical matters. |
14 | $50 | $92 |
| Ultrasound of arm and leg arteries A non-invasive imaging test that uses sound waves to examine the blood vessels in the arms and legs. It evaluates blood flow and checks for blockages or other vascular issues. |
11 | $107 | $275 |
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.
4.0% high complexity
61.8% medium
34.2% routine
Industry Payment Transparency
Open Payments through 2024 ↗$15,279
Total received (2018-2024)
Avg $2,183/year across 7 years
Top 21% in CA for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
38
Companies
698
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
$15,279 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,122
2023
$1,981
2022
$2,121
2021
$1,582
2020
$937
2019
$3,131
2018
$2,404
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Novartis Pharmaceuticals Corporation
$319
PFIZER INC.
$298
Medtronic, Inc.
$286
Boehringer Ingelheim Pharmaceuticals, Inc.
$282
Merck Sharp & Dohme LLC
$263
Lexicon Pharmaceuticals, Inc.
$230
AstraZeneca Pharmaceuticals LP
$208
Alnylam Pharmaceuticals Inc.
$164
Abbott Laboratories
$144
Edwards Lifesciences Corporation
$139
Kiniksa Pharmaceuticals International, plc
$131
Janssen Pharmaceuticals, Inc
$122
Kestra Medical Technology Services, Inc.
$97
E.R. Squibb & Sons, L.L.C.
$92
Boston Scientific Corporation
$86
CARDIVA MEDICAL, INC.
$73
SANOFI-AVENTIS U.S. LLC
$69
Novo Nordisk Inc
$47
Bayer Healthcare Pharmaceuticals Inc.
$20
Philips North America LLC
$20
Amgen Inc.
$17
HEARTFLOW, INC.
$16
Top 3 companies account for 28.9% of 2024 payments
All-time payments by company (2018-2024) ›
Novartis Pharmaceuticals Corporation
$1,955
Amgen Inc.
$1,802
Abbott Laboratories
$1,413
PFIZER INC.
$1,370
Boston Scientific Corporation
$1,115
Edwards Lifesciences Corporation
$916
Boehringer Ingelheim Pharmaceuticals, Inc.
$743
AstraZeneca Pharmaceuticals LP
$566
Janssen Pharmaceuticals, Inc
$496
E.R. Squibb & Sons, L.L.C.
$476
SANOFI-AVENTIS U.S. LLC
$473
Merck Sharp & Dohme LLC
$435
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$416
Alnylam Pharmaceuticals Inc.
$348
Esperion Therapeutics, Inc.
$292
Medtronic, Inc.
$286
Amarin Pharma Inc.
$268
Lexicon Pharmaceuticals, Inc.
$254
BIOTRONIK INC.
$203
Novo Nordisk Inc
$189
Kestra Medical Technology Services, Inc.
$155
Kiniksa Pharmaceuticals International, plc
$131
Impulse Dynamics (USA) Inc.
$129
Regeneron Healthcare Solutions, Inc.
$115
Lundbeck LLC
$110
Kiniksa Pharmaceuticals, Ltd.
$104
Gilead Sciences, Inc.
$85
Medtronic Vascular, Inc.
$75
CARDIVA MEDICAL, INC.
$73
Akcea Therapeutics, Inc.
$68
Merck Sharp & Dohme Corporation
$64
BOSTON SCIENTIFIC CORPORATION
$38
LivaNova USA, Inc.
$24
Bayer Healthcare Pharmaceuticals Inc.
$20
Philips North America LLC
$20
Kowa Pharmaceuticals America, Inc.
$18
Allergan Inc.
$17
HEARTFLOW, INC.
$16
Top 3 companies account for 33.8% of all-time payments
Associated products mentioned in payments ›
(5044) MCOT · AMVUTTRA · ASSURITY · AURORA EV-ICD MRI SURESCAN · AVEIR · AZURE XT DR MRI SURESCAN · Arcalyst · Assure WCD · BRILINTA · BYSTOLIC · CAMZYOS · CARDIOMEMS · CARDIVA VASCADE MVP VVCS 6-12F · CONFIRM RX · CardioMEMS HF System · Claria MRI · Confirm Rx · CoreValve Evolut · Corlanor · ELIQUIS · EMBLEM MRI S-ICD · ENTRESTO · Edwards SAPIEN 3 Transcatheter Heart Valve · Edwards SAPIEN 3 Ultra Transcatheter Heart Valve · Ellipse ICD · FARXIGA · FFRct · Fortify Assura · GALLANT · GENERAL THERAPIES · Gallant ICD · Inpefa · JARDIANCE · JOT DX · KONECT RESILIA · Kerendia · LEQVIO · LINQ II · LUX DX · LifeVest · Livalo · MERLIN@HOME · MICRA · MULTAQ · Merlin Connectivity and Remote · Micra · Mitra Clip system · MitraClip System · NEXLETOL · NORTHERA · ONPATTRO · OPTIMIZER · Ozempic · PRADAXA · PRALUENT · PRALUENT ALIROCUMAB INJECTION · Pacemakers · ProtekDuo · QUADRA ASSURA · Quadra Allure MP RF CRT Pacemkr · Quadra Assura CRT Defibrillator · RESONATE · RESONATE EL ICD VR · Repatha · Reveal LINQ · Rybelsus · SAPIEN 3 Ultra RESILIA · Superion Indirect Decompression System · TEGSEDI · TENDRIL · TYRX · VERQUVO · VYNDAQEL · Vascepa · WAINUA · WATCHMAN · WATCHMAN Access System · WATCHMAN FLX · XARELTO
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 (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Cardiologists within 10 mi
590
Per 100K population
6.0
County median income
$87,760
Nearest hospital
GLENDALE ADVENTIST MEDICAL CENTER
3.1 mi
3.1 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. Giesler is a remote monitoring specialist, with above-average Medicare volume (top 1% in CA), with low-engagement industry engagement, 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. Giesler experienced with adenosine injection, 1 mg?
Based on Medicare claims data, Dr. Giesler performed 11,430 adenosine injection, 1 mg 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. Giesler receive payments from pharmaceutical companies?
Yes. Dr. Giesler received a total of $15,279 from 38 companies across 698 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. Giesler's costs compare to other cardiologists in Pasadena?
Dr. Giesler's average Medicare payment per service is $44. 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. Giesler) 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 →
Explore related providers
Same specialty & city
Cardiologists in Pasadena
Browse cardiologists in Pasadena ranked by procedure volume and transparency data.
Highest volume
Top Cardiologists in CA
Cardiologists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Cardiologists in CA
Which CA cardiologists receive the most from drug and device companies.
By company
Novartis Pharmaceuticals Corporation Payments to Doctors
See all physicians who received payments from Novartis Pharmaceuticals Corporation.
By company
Amgen Inc. Payments to Doctors
See all physicians who received payments from Amgen Inc.
By company
Abbott Laboratories Payments to Doctors
See all physicians who received payments from Abbott Laboratories.
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology