Justin Karl, M.D.
Cardiovascular Disease Physician · Lawrenceville, NJ
Justin Karl, M.D. is a cardiovascular disease physician with a practice address in Lawrenceville, New Jersey, and NPI 1134366958, issued on Jan 15, 2009. Check the license (New Jersey 25MA09469700, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Justin Karl
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 25MA09469700 NJ
253312-1 NY
MD451250 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3140 Princeton Pike, Lawrenceville, NJ 08648
- Phone
- (609) 895-1919
- Enumerated
- Jan 15, 2009
- Record last updated
- Sep 8, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (609) 890-1200
- Medicare enrollment
- Enrolled (PECOS I20140721000019); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,102 in New Jersey → Look up another NPI →
Also registered at 3140 Princeton Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Costanzo, MDCardiovascular Disease Physician1376531517
- Steven Goldsmith, MDCardiovascular Disease Physician1821087222
- Philip Lebovitz, MDCardiovascular Disease Physician1700875580
- Alan Stern, MDCardiovascular Disease Physician1497744866
- Keith Wolfson, MDCardiovascular Disease Physician1417047275
Verify Justin Karl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA09469700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
2,834 Medicare Part D claims for 535 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Amlodipine Besylate290 claims
- Rosuvastatin Calcium288 claims
- Atorvastatin Calcium259 claims
- Metoprolol Tartrate227 claims
- Losartan Potassium183 claims
- Eliquis156 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 95 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,275.46
76 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Medical Associates OF Englewood PCEnglewood, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Justin Karl among 1,102 cardiovascular disease physician records in New Jersey
Justin Karl, M.D. is one of 1,102 cardiovascular disease physician records with a practice address in New Jersey. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 75% of them.
- NPI issued2009 · 75% of these records are older, 23% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2006 · median 1997 among the 833 with a school on file
- Record last updated2014 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in New Jersey
There are 1,102 cardiovascular disease physician records in New Jersey.
All 1,102 in New Jersey → Every provider in Lawrenceville → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Zabeer Bhatti, M.D.Lawrenceville, NJ 086481619354701
- Paul Chew, MDLawrenceville, NJ 086481952698664
- William Costanzo, MDLawrenceville, NJ 086481376531517
- Steven Goldsmith, MDLawrenceville, NJ 086481821087222
- Philip Lebovitz, MDLawrenceville, NJ 086481700875580
- Samir Shah, M.D.Lawrenceville, NJ 086481447434469
- Alan Stern, MDLawrenceville, NJ 086481497744866
- Keith Wolfson, MDLawrenceville, NJ 086481417047275
Common questions
What is Justin Karl, M.D.'s NPI number?
Justin Karl, M.D.'s National Provider Identifier (NPI) is 1134366958, issued on Jan 15, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Justin Karl, M.D. located?
The NPPES record lists a practice address at 3140 Princeton Pike, Lawrenceville, NJ, 08648. Phone: (609) 895-1919. Providers update this record themselves, so call before visiting.
How can I verify Justin Karl, M.D.'s license?
NPPES lists New Jersey license number 25MA09469700, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Justin Karl, M.D. prescribe under Medicare Part D?
In 2024, Justin Karl, M.D. had 2,834 Medicare Part D claims for 535 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Justin Karl, M.D.'s MIPS final score?
The 2023 MIPS final score is 95 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.