Medicare Enrolled
Dr. Mark Karabajakian, DO
Nuclear Cardiology Physician · Milford, MI
Practice pattern: Cardiac Imaging
— Practice with significant diagnostic imaging and stress testing
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. Karabajakian 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 →
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What this data tells you about Dr. Karabajakian
Dr. Mark Karabajakian is a nuclear cardiology physician in Milford, MI, with 19 years of NPI registration. Based on federal Medicare data, Dr. Karabajakian performed 4,517 Medicare services across 3,225 unique beneficiaries.
Between the years covered by Open Payments, Dr. Karabajakian received a total of $3,530 from 23 pharmaceutical and/or device companies across 208 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in nuclear cardiology physician. 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. Karabajakian 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 50% volume in MI
$3,530 industry payments
Medicare Practice Summary
Medicare Utilization ↗4,517
Medicare services
Top 50% in MI for nuclear cardiology physician
3,225
Unique beneficiaries
$74
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~238 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 |
|---|---|---|---|
| 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. |
659 | $91 | $172 |
| 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. |
605 | $65 | $111 |
| 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. |
454 | $11 | $38 |
| 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. |
397 | $7 | $15 |
| Regadenoson injection (Lexiscan) for heart stress test An injection of regadenoson, a medication used to stress the heart during diagnostic testing. |
368 | $44 | $88 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
270 | $145 | $462 |
| 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. |
225 | $140 | $237 |
| Technetium Tc-99m sestamibi diagnostic injection A diagnostic injection of technetium Tc-99m sestamibi used for imaging studies. |
218 | $127 | $378 |
| 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. |
183 | $142 | $354 |
| 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. |
109 | $348 | $1,052 |
| 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. |
109 | $50 | $152 |
| 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. |
98 | $59 | $124 |
| 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. |
88 | $96 | $160 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram, with physician review of the results. |
75 | $10 | $36 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
73 | $20 | $45 |
| Echocardiogram with color Doppler An ultrasound of the heart that uses color imaging to visualize blood flow, measure flow rate, and assess valve function. |
60 | $2 | $56 |
| Continuous external EKG monitoring, 8-15 days This procedure involves recording heart rhythm continuously using an external EKG device over a period of 8 to 15 days. |
54 | $10 | $25 |
| Continuous EKG monitoring review, 48-7 days Review and interpretation of continuous external EKG recordings lasting more than 48 hours up to 7 days. |
52 | $18 | $41 |
| Heart muscle strain imaging | 52 | $29 | $59 |
| Stress echocardiogram An ultrasound of the heart performed while at rest and during exercise or drug-induced stress to evaluate heart function under different conditions. |
50 | $55 | $153 |
| Continuous external EKG monitoring, 48 hours to 7 days This procedure involves recording the heart's electrical activity continuously using an external device for a period exceeding 48 hours but not more than 7 days. |
48 | $9 | $25 |
| Echocardiogram, transthoracic An ultrasound test that uses sound waves to create images of the heart's blood flow, valves, and chambers. |
48 | $14 | $106 |
| Pacemaker system evaluation Assessment of a pacemaker device, including single, dual, multiple lead, or leadless systems. |
38 | $40 | $104 |
| 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. |
32 | $155 | $443 |
| New patient office visit, complex (60-74 min) | 29 | $172 | $317 |
| Implantable defibrillator system check A check of the implanted defibrillator device to ensure it is functioning correctly. This evaluation covers single, dual, or multiple lead systems. |
27 | $59 | $117 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
22 | $52 | $124 |
| Evaluation of implantable heart and blood vessel monitoring system This procedure involves checking the function and data of an implanted device used to monitor heart and blood vessel activity. |
19 | $38 | $80 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
19 | $74 | $112 |
| Telephone medical discussion, 5-10 minutes A phone conversation with a physician lasting between 5 and 10 minutes to discuss medical matters. |
13 | $43 | $68 |
| Cardiac rhythm monitor evaluation Review and analysis of data recorded by a cardiac rhythm monitoring device to assess heart activity. |
12 | $41 | $93 |
| Transesophageal echocardiogram An ultrasound of the heart performed using a probe inserted into the esophagus to obtain detailed images of heart structures and function. |
11 | $80 | $235 |
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.
9.0% high complexity
24.0% medium
67.0% routine
Industry Payment Transparency
Open Payments through 2024 ↗$3,530
Total received (2018-2024)
Avg $504/year across 7 years
Bottom 25% in MI for nuclear cardiology physician
23
Companies
208
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
$3,430 (97.2%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$100 (2.8%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$457
2023
$855
2022
$1,011
2021
$684
2020
$306
2019
$95
2018
$122
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Novartis Pharmaceuticals Corporation
$73
Boston Scientific Corporation
$70
Boehringer Ingelheim Pharmaceuticals, Inc.
$50
Novo Nordisk Inc
$45
PFIZER INC.
$39
E.R. Squibb & Sons, L.L.C.
$36
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$31
Kiniksa Pharmaceuticals International, plc
$28
Janssen Pharmaceuticals, Inc
$24
Merck Sharp & Dohme LLC
$18
Baxter Healthcare
$15
AstraZeneca Pharmaceuticals LP
$14
Amgen Inc.
$14
Top 3 companies account for 42.3% of 2024 payments
All-time payments by company (2018-2024) ›
Novartis Pharmaceuticals Corporation
$593
Merck Sharp & Dohme LLC
$378
Amarin Pharma Inc.
$359
Janssen Pharmaceuticals, Inc
$345
AstraZeneca Pharmaceuticals LP
$265
SANOFI-AVENTIS U.S. LLC
$223
Amgen Inc.
$216
E.R. Squibb & Sons, L.L.C.
$206
Boston Scientific Corporation
$140
Merck Sharp & Dohme Corporation
$134
PFIZER INC.
$127
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$119
Astellas Pharma US Inc
$100
Boehringer Ingelheim Pharmaceuticals, Inc.
$81
Novo Nordisk Inc
$45
BOSTON SCIENTIFIC CORPORATION
$39
Medtronic, Inc.
$35
Baxter Healthcare
$30
Kiniksa Pharmaceuticals International, plc
$28
IMPEL PHARMACEUTICALS INC.
$25
CMP Pharma, Inc.
$15
ABBVIE INC.
$15
Kowa Pharmaceuticals America, Inc.
$12
Top 3 companies account for 37.7% of all-time payments
Associated products mentioned in payments ›
Arcalyst · BRILINTA · CAMZYOS · CaroSpir · Corlanor · ELIQUIS · ENTRESTO · FARXIGA · Hillrom - Carnation Ambulatory Monitor · JANUVIA · JARDIANCE · LEQVIO · LINQ II · LifeVest · Livalo · MULTAQ · Repatha · Trudhesa · VARIVAX · VERQUVO · VRAYLAR · VYNDAQEL · Vascepa · WAINUA · WATCHMAN · WATCHMAN Access System · WATCHMAN FLX · Wegovy · 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 (97%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Nuclear cardiology physicians within 10 mi
1
Per 100K population
0.1
County median income
$95,296
Nearest hospital
HURON VALLEY-SINAI HOSPITAL
4.4 mi
4.4 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. Karabajakian is a cardiac imaging specialist, with moderate Medicare volume, 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. Karabajakian experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Karabajakian performed 659 office visit, established patient (30-39 min) 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. Karabajakian receive payments from pharmaceutical companies?
Yes. Dr. Karabajakian received a total of $3,530 from 23 companies across 208 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. Karabajakian's costs compare to other nuclear cardiology physicians in Milford?
Dr. Karabajakian's average Medicare payment per service is $74. 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. Karabajakian) 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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