Dr. Marc Klapholz, MD

  • Newark, NJ
  • Cardiologist
NPI1063447829PAC ID6901887405
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
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Mobile number
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Social profiles

Primary practice

University Hospital

Hospital · Newark, New Jersey

See all 3 affiliations

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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 and contact details
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
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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.

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.

See all 3 affiliations for Dr. Klapholz

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.

EHR by site
SiteEHR vendor and product
University HospitalAvailable with a free account
+1 more affiliated siteAvailable 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 JerseyPrimaryLicense 25MA06249400 · taxonomy 207RC0000X

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.

Medicare services, 202354
Medicare patients24
Paid by Medicare$2,847
Procedure codes1

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.

See all procedures by Dr. Klapholz

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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.

Medicare patients, 202424
Average age73
Average risk score2.29

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

  1. Heart failure75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Ischemic heart disease67%
  5. Chronic kidney disease58%
  6. 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.

Part D claims, 20241,091
Drugs named by CMS33
Total drug cost$1.2M
Part D patients76

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.

See all prescribing by Dr. Klapholz

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.

Papers26
Years published2012 to 2024

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

Recent publications by Dr. Klapholz

See all 26 publications and co-authors

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.

How network discovery works

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

Recent clinical trials with Dr. Klapholz

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

$11.9Kin total
  • 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.

See all payments to Dr. Klapholz

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.

  1. Medical schoolAlbert Einstein College of Medicine of Yeshiva University

Source: Dmand AI Professional Profile Data

Sources for Dr. Marc Klapholz's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Marc Klapholz

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

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).

Show 6 more questionsShow fewer questions

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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