Dr. Marc Klapholz, MD
- Medicare services, 2023
- 54
- Medicare patients, 2024
- 24
- Part D claims, 2024
- 1,091
- Publications
- 26
- Clinical trials
- 2
- Practice address
- 150 Bergen St, Newark, NJ 07103
- Practice phone
- Call (973) 972-4300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Klapholz's professional email, personal email and mobile number
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Dr. Marc Klapholz is a cardiologist in Newark, New Jersey
Dr. Klapholz practices at University Hospital in Newark, New Jersey, part of State of New Jersey.
Dr. Klapholz's NPI, 1063447829, was assigned on July 11, 2006. Dr. Klapholz graduated from Albert Einstein College of Medicine of Yeshiva University in 1986. Dr. Klapholz holds New Jersey license 25MA06249400.
- NPI
- 1063447829NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901887405
- NPI enumeration date
- July 11, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (973) 972-4300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marc Klapholz practices at University Hospital in Newark, New Jersey
Dr. Klapholz's primary practice is University Hospital, at 150 Bergen St, Newark, NJ 07103 in Essex County. The practice phone is (973) 972-4300.
- University Hospital150 Bergen St, Newark, NJ 07103 · Essex CountyPhone(973) 972-4300
Source: Dmand AI Affiliation Data
Dr. Marc Klapholz is affiliated with 2 sites of care and 1 medical group
Dr. Klapholz's primary practice is University Hospital in Newark, New Jersey, part of State of New Jersey. The medical group on file is University Neuro-Ophthalmology Associates. Dmand AI also links Dr. Klapholz to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marc Klapholz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klapholz practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marc Klapholz is one of 1,042 cardiologists in New Jersey
Cardiovascular disease is Dr. Klapholz's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Klapholz is licensed in New Jersey.
Specialties and state licenses
- Cardiovascular disease, New JerseyPrimary
Cardiologists near Dr. Klapholz
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Marc Klapholz billed Medicare for 54 services in 2023
CMS data shows 54 Medicare services from Dr. Klapholz across 1 procedure code in 2023, all of them office visits, for 24 Medicare patients. Medicare paid $2,847 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Klapholz's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 722023: 5425%
Dr. Klapholz compared with the New Jersey median for cardiologists, 2023
- Dr. Klapholz
- New Jersey median
- Medicare services
- 54vs 2,41898% below
- Medicare patients
- 24vs 87897% below
- Part D claims
- 867vs 2,33963% below
Medians across 1,016 cardiologists in New Jersey with Dmand AI profiles that report each measure.
Dr. Klapholz's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marc Klapholz treated 24 Medicare patients in 2024, average age 73
CMS counts 24 Medicare patients who saw Dr. Klapholz in 2024. The largest group is 65 to 74, with 11 patients. 75% of them have heart failure, and 75% have high blood pressure. Their average risk score is 2.29, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Klapholz's median patient age at 64, with 50% women.
Dr. Klapholz's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Klapholz's Medicare patients by sex, 2024
- Women1354%
- Men1146%
Chronic conditions among Dr. Klapholz's Medicare patients, 2024
- Heart failure75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease67%
- Chronic kidney disease58%
- Diabetes54%
Share of Medicare patients with each condition. A patient can have several.
Dr. Klapholz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women50%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marc Klapholz wrote 1,091 Medicare Part D claims in 2024
In 2024, Dr. Klapholz wrote 1,091 Medicare Part D claims for 76 patients. 82% of them were for generic drugs. CMS names the drug for 867 of them, across 33 drugs with 11 or more claims each, at $1,152,504 in total drug cost. In 2023, CMS named 725 claims across 27 drugs.
Dr. Klapholz's Part D claims by kind of drug, 2024
- Generic893 claims82%
- Brand-name and other198 claims18%
Dr. Klapholz's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7252024: 86720%
Drugs named by CMS: 33 in 2024, 27 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Marc Klapholz takes part in Medicare
Dr. Klapholz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Coronary angioplasty and stenting: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Marc Klapholz has 26 publications on record
Dmand AI links 26 papers to Dr. Klapholz, published from 2012 to 2024. 2016 was the busiest year, with 6. The most frequent topics are Disease Progression, Heart Failure and Acute Coronary Syndrome. Dr. Klapholz has published most often in Minerva Cardioangiol. Dr. Klapholz's most frequent co-authors are Alfonso Hillman Waller, MD, Christine Marie Gerula, MD and Edo Kaluski, MD.
Dr. Klapholz's papers by year, 2012 to 2024
Topics Dr. Klapholz writes about most
- Disease Progression
- Heart Failure
- Acute Coronary Syndrome
- Cardiomyopathies
- Cardiovascular Diseases
- Comorbidity
- Electrocardiography
- Heart Arrest
Dr. Klapholz's most frequent co-authors
- Alfonso Hillman Waller, MD12 shared papers
- Christine Marie Gerula, MD10 shared papers
- Edo Kaluski, MD9 shared papers
Recent publications by Dr. Klapholz
Heart Surg Forum
See who Dr. Klapholz researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Klapholz works with, so you can find a warm path to the right cardiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Marc Klapholz has worked on 2 clinical trials
Dmand AI links Dr. Klapholz to 2 clinical trials, 2 of them phase 3 studies. Conditions studied include Limb-girdle muscular dystrophy, type 1B, Pulmonary Arterial Hypertension and Cardiomyopathy, Dilated.
Conditions in Dr. Klapholz's trials
- Limb-girdle muscular dystrophy, type 1B
- Pulmonary Arterial Hypertension
- Cardiomyopathy, Dilated
- Hypertension, Pulmonary
Investigators on the most trials with Dr. Klapholz
- Samuel A. Allen, DO1 shared trial
- Hassan Mari Alnuaimat, MD1 shared trial
- David B. Badesch, MD1 shared trial
Recent clinical trials with Dr. Klapholz
A Study of ARRY-371797 (PF-07265803) in Patients With Symptomatic Dilated Cardiomyopathy Due to a Lamin A/C Gene Mutation (opens in a new tab)
Beraprost-314d Added-on to Tyvaso® (BEAT) (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Marc Klapholz received $11,875 in industry payments from 2016 to 2022
CMS Open Payments shows 18 general payments to Dr. Klapholz from 5 drug and device companies from 2016 to 2022. Consulting fees make up the largest share, 81% of the total. Janssen Research & Development, LLC paid the most, $9,700.
General payments to Dr. Klapholz by program year, 2016 to 2022
General payments to Dr. Klapholz by kind, 2016 to 2022
- Consulting fees$9,56981%
- Grants$1,50013%
- Food and beverage$8067%
Companies that paid Dr. Klapholz the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marc Klapholz graduated from Albert Einstein College of Medicine of Yeshiva University
Dr. Klapholz graduated from Albert Einstein College of Medicine of Yeshiva University in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marc Klapholz's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Marc Klapholz
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What is Dr. Marc Klapholz's NPI number?
Dr. Marc Klapholz's NPI number is 1063447829. It was assigned on July 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marc Klapholz?
Dr. Marc Klapholz is a cardiologist in Newark, New Jersey. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Marc Klapholz practice?
Dr. Klapholz practices at 150 Bergen St, Newark, NJ 07103. Dr. Klapholz's primary practice is University Hospital in Newark, New Jersey, part of State of New Jersey. Dmand AI also links Dr. Klapholz to 1 group practice or clinic.
What is Dr. Marc Klapholz's office phone number?
The practice phone on file for Dr. Klapholz is (973) 972-4300.
What is Dr. Marc Klapholz's medical license number?
Dr. Klapholz holds New Jersey license 25MA06249400.
Which hospitals is Dr. Marc Klapholz affiliated with?
Dr. Klapholz practices at University Hospital in Newark, New Jersey.
What medical group is Dr. Marc Klapholz part of?
Dr. Klapholz is linked to University Neuro-Ophthalmology Associates.
Does Dr. Marc Klapholz accept Medicare?
Yes. CMS data shows Dr. Klapholz billed Medicare for 54 services in 2023, and Dr. Klapholz accepts Medicare assignment.
How many Medicare patients does Dr. Marc Klapholz see?
CMS counts 24 Medicare patients who saw Dr. Klapholz in 2024, with an average age of 73.
What services does Dr. Marc Klapholz bill to Medicare?
In 2023, Dr. Klapholz's most billed Medicare services were office visit, established patient (99213).
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Where did Dr. Marc Klapholz go to medical school?
Dr. Klapholz graduated from Albert Einstein College of Medicine of Yeshiva University in 1986.
What drugs does Dr. Marc Klapholz prescribe most?
In 2024 Medicare Part D data, Dr. Klapholz's most prescribed drugs by claims were Atorvastatin Calcium, Entresto and Spironolactone.
Has Dr. Marc Klapholz received payments from drug or device companies?
CMS Open Payments shows $11,875 in general payments to Dr. Klapholz from 5 companies from 2016 to 2022. The largest total came from Janssen Research & Development, LLC.
How long has Dr. Marc Klapholz been practicing?
Dr. Klapholz graduated from medical school in 1986, 40 years ago.
Does Dr. Marc Klapholz do research?
Dmand AI links 26 publications to Dr. Klapholz, published from 2012 to 2024. Dr. Klapholz has worked on 2 clinical trials.
Who does Dr. Marc Klapholz publish with?
Dr. Klapholz's most frequent co-authors are Alfonso Hillman Waller, MD (12 shared papers), Christine Marie Gerula, MD (10 shared papers) and Edo Kaluski, MD (9 shared papers).
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