Robert Irwin Karlsberg, D.M.D.
General Practice Dentistry · Piscataway, NJ
Robert Irwin Karlsberg, D.M.D. is a general practice dentistry with a practice address in Piscataway, New Jersey, and NPI 1942392329, issued on Sep 29, 2006. Check the license (New Jersey DI 012588, as entered in NPPES) with the New Jersey board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Robert Irwin Karlsberg
- Credential
- D.M.D.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- DI 012588 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 165 Stelton RD, Piscataway, NJ 08854
- Phone
- (732) 752-1264
- Enumerated
- Sep 29, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (732) 752-7939
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 4,085 in New Jersey → Look up another NPI →
Also registered at 165 Stelton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Thompson, D.M.D.General Practice Dentistry1396845962
Verify Robert Irwin Karlsberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Jersey board licenses this profession
Search for license DI 012588Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average general practice dentistry in 2024
212 Medicare Part D claims for 96 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. 49 claims were for opioids.
Most prescribed
- Amoxicillin110 claims
- Acetaminophen-Codeine46 claims
- Chlorhexidine Gluconate12 claims
- Clindamycin Hcl11 claims
- Ibuprofen11 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.
Robert Irwin Karlsberg among 4,085 general practice dentistry records in New Jersey
Robert Irwin Karlsberg, D.M.D. is one of 4,085 general practice dentistry records with a practice address in New Jersey. 64% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 68% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 80% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 general practice dentistry records list a practice address in Piscataway
They are 15 of the 1,379 NPPES records with a practice address in Piscataway, and 4,085 general practice dentistry records in New Jersey.
All 4,085 in New Jersey → Every provider in Piscataway → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Leon Friedman, D.D.S.Piscataway, NJ 088541962626515
- Augustine Johnson, DDSPiscataway, NJ 088541811047582
- Javeria KhanPiscataway, NJ 088541588216394
- Maitri KothariPiscataway, NJ 088541316823388
- Huan Li, DMDPiscataway, NJ 088541437719556
- Warren Lorch, D.M.DPiscataway, NJ 088541598856940
- Fred Naddelman, DDSPiscataway, NJ 088541194748111
- Mamta Shah, DDSPiscataway, NJ 088541043212582
Common questions
What is Robert Irwin Karlsberg, D.M.D.'s NPI number?
Robert Irwin Karlsberg, D.M.D.'s National Provider Identifier (NPI) is 1942392329, issued on Sep 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Irwin Karlsberg, D.M.D. located?
The NPPES record lists a practice address at 165 Stelton RD, Piscataway, NJ, 08854. Phone: (732) 752-1264. Providers update this record themselves, so call before visiting.
How can I verify Robert Irwin Karlsberg, D.M.D.'s license?
NPPES lists New Jersey license number DI 012588, as entered by the provider. Search the New Jersey board that licenses this profession; the NPPES record confirms identity only.
How much does Robert Irwin Karlsberg, D.M.D. prescribe under Medicare Part D?
In 2024, Robert Irwin Karlsberg, D.M.D. had 212 Medicare Part D claims for 96 beneficiaries; the average among general practice dentistry prescribers was 83. 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.