Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Joseph Lee Klapper, MD

Individual provider Cardiovascular Disease Physician · NPI 1881638260

Dr. Joseph Lee Klapper, MD is registered under Cardiovascular Disease (Cardiology) in Hollister, California. Graduated from Hahnemann University College of Medicine in 1990, 36 years ago. Practices with Hazel Hawkins Memorial Hospital, a 53-clinician group and accepts Medicare assignment. Licensed in Arizona and California.

Years since qualifying
36
Trained at
Hahnemann University College of Medicine
Licensed in
AZ, CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

901 Sunset Dr Ste 4
Hollister, CA 95023-5613 Not confirmed with CMS for 18 years — call before visiting
Phone: (831) 636-1571
Fax: (831) 636-1706
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence G84033 (CA)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 32318 (AZ)

Record details

NPI number1881638260
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 15, 2006
Last updated in NPPESSeptember 3, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesGENERAL PRACTICE
Medical schoolHAHNEMANN UNIVERSITY COLLEGE OF MEDICINE
Graduated 1990 (36 years in practice)
Group practice Hazel Hawkins Memorial Hospital — 53 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients21
Services billed 29 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Hazel Hawkins Memorial Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 53 clinicians in the practice; 12 are shown here.

Other providers in Hollister