Karen Balonze, MD
Internal Medicine Physician · Fair Lawn, NJ
Karen Balonze, MD is an internal medicine physician with a practice address in Fair Lawn, New Jersey, and NPI 1023360203, issued on Oct 11, 2012. Check the license (New Jersey 25MA09427400, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Karen Balonze
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25MA09427400 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 31-00 Broadway, Fair Lawn, NJ 07410
- Phone
- (201) 796-2255
- Enumerated
- Oct 11, 2012
- Record last updated
- Jul 9, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (201) 796-7020
- Medicare enrollment
- Enrolled (PECOS I20160308000129); accepts Medicare assignment
- Medical or professional school
- Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 31-00 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christopher Batchelor, MDInternal Medicine Physician1417215468
Verify Karen Balonze 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 25MA09427400Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,878 Medicare Part D claims for 177 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Rosuvastatin Calcium194 claims
- Atorvastatin Calcium166 claims
- Amlodipine Besylate99 claims
- Levothyroxine Sodium70 claims
- Losartan Potassium66 claims
- Hydrochlorothiazide53 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.
Bills Medicare through one group practice
- Summit Medical Group PABerkeley Heights, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Balonze among 4,632 internal medicine physician records in New Jersey
Karen Balonze, MD is one of 4,632 internal medicine physician records with a practice address in New Jersey. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 70% of them.
- NPI issued2012 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2011 · median 2000 among the 3,132 with a school on file
- Record last updated2019 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 internal medicine physician records list a practice address in Fair Lawn
They are 33 of the 1,041 NPPES records with a practice address in Fair Lawn, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Fair Lawn → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christine Aquino, M.D.Fair Lawn, NJ 074101134143928
- Basel Batarseh, MDFair Lawn, NJ 074101891803318
- Lawrence Berman, MDFair Lawn, NJ 074101083673297
- Assia Bromberg, M.D.Fair Lawn, NJ 074101629047261
- Nazma Hossain, M.D.Fair Lawn, NJ 074101518997360
- Mark Lehrman, MDFair Lawn, NJ 074101306809090
- Ellen Levan, M.D.Fair Lawn, NJ 074101710960927
- Olga Lishko, M.D.Fair Lawn, NJ 074101710940317
Common questions
What is Karen Balonze, MD's NPI number?
Karen Balonze, MD's National Provider Identifier (NPI) is 1023360203, issued on Oct 11, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Karen Balonze, MD located?
The NPPES record lists a practice address at 31-00 Broadway, Fair Lawn, NJ, 07410. Phone: (201) 796-2255. Providers update this record themselves, so call before visiting.
How can I verify Karen Balonze, MD's license?
NPPES lists New Jersey license number 25MA09427400, 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 Karen Balonze, MD prescribe under Medicare Part D?
In 2024, Karen Balonze, MD had 1,878 Medicare Part D claims for 177 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.