Ephraim S. Casper, MD
Medical Oncology Physician · Basking Ridge, NJ
Ephraim S. Casper, MD is a medical oncology physician with a practice address in Basking Ridge, New Jersey, and NPI 1174503320, issued on Jan 21, 2006. Check the license (New Jersey 064083, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ephraim S. Casper
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 064083 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 136 Mountain View Blvd, Basking Ridge, NJ 07920
- Phone
- (908) 542-3300
- Enumerated
- Jan 21, 2006
- Record last updated
- Jun 19, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050624000105); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 1974
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 140 in New Jersey → Look up another NPI →
Also registered at 136 Mountain View Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Linda Aboody, MDDiagnostic Radiology Physician1821177312
- Karen Borofsky, MDRadiation Oncology Physician1710991526
- Deborah Capko, MDSurgical Oncology Physician1447284450
- Donna McGuffy, BS RPH BCOP PICOncology Pharmacist1639446370
- Karen Perialis, RN, MSN, ANP -CAdult Health Nurse Practitioner1336435692
- Elizabeth Quigley, MDDermatology Physician1649466335
Verify Ephraim S. Casper 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 064083Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average medical oncology physician in 2024
122 Medicare Part D claims for 22 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims. 22 claims were for opioids.
Most prescribed
- Xarelto18 claims
- Lonsurf12 claims
- Ondansetron Hcl11 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): 98.7 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).
Bills Medicare through one group practice
- Valley Physician Services PCHoboken, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ephraim S. Casper among 140 medical oncology physician records in New Jersey
Ephraim S. Casper, MD is one of 140 medical oncology physician records with a practice address in New Jersey. 78% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1974 · median 2001 among the 96 with a school on file
- Record last updated2009 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in New Jersey
There are 140 medical oncology physician records in New Jersey.
All 140 in New Jersey → Every provider in Basking Ridge → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Afsheen Iqbal, MDBasking Ridge, NJ 079201902061880
- Han Xiao, MDBasking Ridge, NJ 079201194705533
- Jessica Yang, MDBasking Ridge, NJ 079201649541863
- Lisa Mills, M.D.Berkeley Heights, NJ 079221215052287
- Samit Hirawat, M.D.Chatham, NJ 079281619102878
- Andrea Kay, M.D.Florham Park, NJ 079321609185602
- Ranjana Tavorath, M.D.East Hanover, NJ 079361013251073
- Dennis Lowenthal, MDSummit, NJ 079011528050374
Common questions
What is Ephraim S. Casper, MD's NPI number?
Ephraim S. Casper, MD's National Provider Identifier (NPI) is 1174503320, issued on Jan 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ephraim S. Casper, MD located?
The NPPES record lists a practice address at 136 Mountain View Blvd, Basking Ridge, NJ, 07920. Phone: (908) 542-3300. Providers update this record themselves, so call before visiting.
How can I verify Ephraim S. Casper, MD's license?
NPPES lists New Jersey license number 064083, 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 Ephraim S. Casper, MD prescribe under Medicare Part D?
In 2024, Ephraim S. Casper, MD had 122 Medicare Part D claims for 22 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Ephraim S. Casper, MD's MIPS final score?
The 2023 MIPS final score is 98.7 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.