Dr. Joseph Lee Klapper, MD
- Medicare services, 2024
- 18
- Medicare patients, 2024
- 21
- Part D claims, 2024
- 346
- Hospital affiliations
- 1
- Industry payments
- $159
- Practice address
- 911 Sunset Drive, Hollister, CA 95032
- Practice phone
- Call (831) 637-5711
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Klapper's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Joseph Lee Klapper is a cardiologist in Hollister, California
Dr. Klapper practices at Hazel Hawkins Memorial Hospital in Hollister, California, part of Hazel Hawkins.
Dr. Klapper's NPI, 1881638260, was assigned on June 15, 2006. Dr. Klapper graduated from Drexel University College Of Medicine in 1990. Dr. Klapper holds California license G84033.
- NPI
- 1881638260NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456252634
- NPI enumeration date
- June 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (831) 637-5711
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph Lee Klapper practices at Hazel Hawkins Memorial Hospital in Hollister, California
Dr. Klapper's primary practice is Hazel Hawkins Memorial Hospital, at 911 Sunset Drive, Hollister, CA 95032 in Santa Clara County. The practice phone is (831) 637-5711.
- Hazel Hawkins Memorial Hospital911 Sunset Drive, Hollister, CA 95032 · Santa Clara CountyPhone(831) 637-5711
Source: Dmand AI Affiliation Data
Dr. Joseph Lee Klapper is affiliated with 3 sites of care and 1 medical group
Dr. Klapper's primary practice is Hazel Hawkins Memorial Hospital in Hollister, California, part of Hazel Hawkins. The medical group on file is Hazel Hawkins Memorial Hospital. Dmand AI also links Dr. Klapper to 1 more physician office and 1 group practice or clinic, each named with a free account. Dr. Klapper's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Joseph Lee Klapper's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klapper practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hazel Hawkins Memorial Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Hazel Hawkins and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Joseph Lee Klapper is one of 2,375 cardiologists in California
Cardiovascular disease is Dr. Klapper's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Klapper is board certified in cardiovascular disease by the American Board of Internal Medicine. Dmand AI has Dr. Klapper's licenses on file in 7 states: California, Wisconsin, Arizona, Kansas, Florida, Indiana and Georgia.
Specialties and state licenses
- Cardiovascular disease, CaliforniaPrimary
- Wisconsin license
- Arizona license
- Kansas license
- Florida license
- Indiana license
- Georgia license
Clinical focus
Dmand AI lists atrial fibrillation and flutter, chronic hypertension, coronary artery disease, heart blockage, heart failure, heart valve disorders, high cholesterol and pulmonary heart disease among the conditions Dr. Klapper treats.
Cardiologists near Dr. Klapper
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Joseph Lee Klapper billed Medicare for 18 services in 2024
CMS data shows 18 Medicare services from Dr. Klapper across 1 procedure code in 2024, for 21 Medicare patients. Medicare paid $1,105 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Klapper's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 152024: 1820%
Dr. Klapper compared with the California median for cardiologists, 2024
- Dr. Klapper
- California median
- Medicare services
- 18vs 1,56099% below
- Medicare patients
- 21vs 64497% below
- Part D claims
- 267vs 1,41081% below
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Dr. Klapper's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Klapper?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Klapper and other cardiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph Lee Klapper treated 21 Medicare patients in 2024, average age 72
CMS counts 21 Medicare patients who saw Dr. Klapper in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.43, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Klapper's median patient age at 63, with 72% women.
Chronic conditions among Dr. Klapper's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Ischemic heart disease57%
Share of Medicare patients with each condition. A patient can have several.
Dr. Klapper's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women72%
- Men28%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph Lee Klapper wrote 346 Medicare Part D claims in 2024
In 2024, Dr. Klapper wrote 346 Medicare Part D claims for 43 patients. 77% of them were for generic drugs. CMS names the drug for 267 of them, across 12 drugs with 11 or more claims each, at $71,815 in total drug cost. In 2023, CMS named 224 claims across 11 drugs.
Dr. Klapper's Part D claims by kind of drug, 2024
- Generic268 claims77%
- Brand-name and other78 claims23%
Dr. Klapper's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2242024: 26719%
Drugs named by CMS: 12 in 2024, 11 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Joseph Lee Klapper takes part in Medicare
Dr. Klapper accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Joseph Lee Klapper received $159 in industry payments from 2016 to 2024
CMS Open Payments shows 7 general payments to Dr. Klapper from 1 drug or device company from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) paid the most, $159.
General payments to Dr. Klapper by program year, 2016 to 2024
Companies that paid Dr. Klapper the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joseph Lee Klapper graduated from Drexel University College Of Medicine
Dr. Klapper graduated from Drexel University College Of Medicine in 1990.
- Medical school
- Board certified in cardiovascular disease
- Board certified in cardiovascular disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Joseph Lee Klapper accepts plans from 11 insurance carriers
Dr. Klapper is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- +3 more carriersWith a free account
Plan types Dr. Klapper accepts, by number of carriers
- Medicare8
- PPO7
- POS5
- HMO4
- EPO3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Joseph Lee Klapper's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Joseph Lee Klapper
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Joseph Lee Klapper's NPI number?
Dr. Joseph Lee Klapper's NPI number is 1881638260. It was assigned on June 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph Lee Klapper?
Dr. Joseph Lee Klapper is a cardiologist in Hollister, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Joseph Lee Klapper practice?
Dr. Klapper practices at 911 Sunset Drive, Hollister, CA 95032. Dr. Klapper's primary practice is Hazel Hawkins Memorial Hospital in Hollister, California, part of Hazel Hawkins. Dmand AI also links Dr. Klapper to 1 physician office and 1 group practice or clinic.
What is Dr. Joseph Lee Klapper's office phone number?
The practice phone on file for Dr. Klapper is (831) 637-5711.
What is Dr. Joseph Lee Klapper's medical license number?
Dr. Klapper holds California license G84033, one of the licenses on file in 7 states.
Which states has Dr. Joseph Lee Klapper been licensed in?
Dmand AI has state licenses on file for Dr. Klapper in California (1997 to 2026), Wisconsin (2018 to 2025), Arizona (2019 to 2023), Kansas (2018 to 2021), Florida (2017 to 2020), Indiana (2018 to 2019) and Georgia (2006 to 2008).
Which hospitals is Dr. Joseph Lee Klapper affiliated with?
Dr. Klapper practices at Hazel Hawkins Memorial Hospital in Hollister, California.
What medical group is Dr. Joseph Lee Klapper part of?
Dr. Klapper is linked to Hazel Hawkins Memorial Hospital.
Does Dr. Joseph Lee Klapper accept Medicare?
Yes. CMS data shows Dr. Klapper billed Medicare for 18 services in 2024, and Dr. Klapper accepts Medicare assignment.
How many Medicare patients does Dr. Joseph Lee Klapper see?
CMS counts 21 Medicare patients who saw Dr. Klapper in 2024, with an average age of 72.
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Is Dr. Joseph Lee Klapper board certified?
Yes. Dr. Klapper is board certified in cardiovascular disease by the American Board of Internal Medicine.
What services does Dr. Joseph Lee Klapper bill to Medicare?
In 2024, Dr. Klapper's most billed Medicare services were heart test or procedure (93306).
Where did Dr. Joseph Lee Klapper go to medical school?
Dr. Klapper graduated from Drexel University College Of Medicine in 1990.
What drugs does Dr. Joseph Lee Klapper prescribe most?
In 2024 Medicare Part D data, Dr. Klapper's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Carvedilol.
Has Dr. Joseph Lee Klapper received payments from drug or device companies?
CMS Open Payments shows $159 in general payments to Dr. Klapper from 1 company from 2016 to 2024. The largest total came from ZOLL Services LLC (A/K/A ZOLL LifeCor Corp).
How long has Dr. Joseph Lee Klapper been practicing?
Dr. Klapper graduated from medical school in 1990, 36 years ago.
What insurance does Dr. Joseph Lee Klapper accept?
Dr. Klapper is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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