Howard M. Karp, DO
Nephrology Physician · Northfield, NJ
Howard M. Karp, DO is a nephrology physician with a practice address in Northfield, New Jersey, and NPI 1619986841, issued on Aug 5, 2006. Check the license (New Jersey 25MB02446200, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Howard M. Karp
- Credential
- DO
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 25MB02446200 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 2605 Shore RD, Northfield, NJ 08225
- Phone
- (609) 365-5300
- Enumerated
- Aug 5, 2006
- Record last updated
- Nov 20, 2023
- Fax
- (609) 365-5301
- Medicaid ID
- 12760000 NJ
- Medicare enrollment
- Enrolled (PECOS I20080902000146); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 2605 Shore RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rosario Alfaro, NP-CAdult Health Nurse Practitioner1053686931
- Kelsey Allen, NPFamily Nurse Practitioner1518592963
- Seblewongel Bulcha Debosse, MDFamily Medicine Physician1841458437
- Gregory Carson, MDEmergency Medicine Physician1063452720
- Diane Casey, APNNurse Practitioner1548745623
- Maria Jimenez Cerna, M.D.Internal Medicine Physician1447668348
Verify Howard M. Karp 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 25MB02446200Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average nephrology physician in 2024
2,992 Medicare Part D claims for 194 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. 57 claims were for opioids.
Most prescribed
- Atorvastatin Calcium264 claims
- Rosuvastatin Calcium156 claims
- Amlodipine Besylate130 claims
- Levothyroxine Sodium120 claims
- Alprazolam101 claims
- Allopurinol100 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.
Industry payments in 2024: $911.61
36 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Shore Memorial Physicians Group PCNorthfield, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
9 nephrology physician records list a practice address in Northfield
They are 9 of the 343 NPPES records with a practice address in Northfield, and 433 nephrology physician records in New Jersey.
All 9 in Northfield → All 433 in New Jersey → Every provider in Northfield →
Other nephrology physician records in New Jersey
- Arshia Abbasi, MDParamus, NJ1366756553
- Azza Abdel Hak, M.D.Voorhees, NJ1508135906
- Khaled Abdel-Kader, M.D.Freehold, NJ1164693008
- Zeinab Abdulrahman, MDNeptune Twp, NJ1528687803
- Mirel Abramovici, M.D.Englewood, NJ1215961958
- Prasad Acharya, M.D.Hainesport, NJ1295783785
- Alexandre Ackad, MDMidland Park, NJ1649261454
- Ananea Adamidis, M.D.Teaneck, NJ1235139957
- Adedamola Adeboye, M.DWest Orange, NJ1972997146
- Samuel Agahiu, MDEnglewood, NJ1992967020
Common questions
What is Howard M. Karp, DO's NPI number?
Howard M. Karp, DO's National Provider Identifier (NPI) is 1619986841, issued on Aug 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Howard M. Karp, DO located?
The NPPES record lists a practice address at 2605 Shore RD, Northfield, NJ, 08225. Phone: (609) 365-5300. Providers update this record themselves, so call before visiting.
How can I verify Howard M. Karp, DO's license?
NPPES lists New Jersey license number 25MB02446200, 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 Howard M. Karp, DO prescribe under Medicare Part D?
In 2024, Howard M. Karp, DO had 2,992 Medicare Part D claims for 194 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.