Mark David Kirschenbaum, M.D.
Internal Medicine Physician · Ridgewood, NJ
Mark David Kirschenbaum, M.D. is an internal medicine physician with a practice address in Ridgewood, New Jersey, and NPI 1144259425, issued on Jun 30, 2006. Check the license (New Jersey 25MA04933400, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark David Kirschenbaum
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 25MA04933400 NJ
MA04933400 NJ
155240 NY
Self-reported in NPPES; status is on the state search - Practice location
- 104 Chestnut St, Ridgewood, NJ 07450
- Phone
- (201) 670-4664
- Enumerated
- Jun 30, 2006
- Record last updated
- Jan 24, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (201) 670-8007
- Medicaid IDs
- 01113533 NY
3396100 NJ - Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 104 Chestnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julia Freeman, RN, APN,CAdult Health Nurse Practitioner1881674653
- Kim Minervini, PTPhysical Therapist1275692824
- Traci O'Hara, D.P.T.Orthopedic Physical Therapist1912192055
- Margaret Ortlieb, PT, DPTOrthopedic Physical Therapist1992271829
- Joseph WhitingOrthopedic Physical Therapist1962265926
Verify Mark David Kirschenbaum 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 25MA04933400Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
29 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $23.91
1 payment: food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Mark David Kirschenbaum among 4,632 internal medicine physician records in New Jersey
Mark David Kirschenbaum, M.D. 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2011 · 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).
16 internal medicine physician records list a practice address in Ridgewood
They are 16 of the 1,059 NPPES records with a practice address in Ridgewood, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Ridgewood → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sanchita Gupta, M.D., MPHRidgewood, NJ 074501932302924
- Deborah Hammond, M.D.Ridgewood, NJ 074501891784310
- Elaine Holt, MDRidgewood, NJ 074501447363254
- Reem Jaber-Iqbal, DORidgewood, NJ 074501326231879
- Amita Kalia-Sharma, M.DRidgewood, NJ 074501376619353
- Birinder Kaur, M.DRidgewood, NJ 074501992706733
- Harini Mallipeddi, M.DRidgewood, NJ 074501033310586
- Francis McGorty, MDRidgewood, NJ 074501871557025
Common questions
What is Mark David Kirschenbaum, M.D.'s NPI number?
Mark David Kirschenbaum, M.D.'s National Provider Identifier (NPI) is 1144259425, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark David Kirschenbaum, M.D. located?
The NPPES record lists a practice address at 104 Chestnut St, Ridgewood, NJ, 07450. Phone: (201) 670-4664. Providers update this record themselves, so call before visiting.
How can I verify Mark David Kirschenbaum, M.D.'s license?
NPPES lists New Jersey license number 25MA04933400, 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 Mark David Kirschenbaum, M.D. prescribe under Medicare Part D?
In 2024, Mark David Kirschenbaum, M.D. had 29 Medicare Part D claims; 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.