Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Karl D Wittnebel, MD

Individual provider Internal Medicine Physician · NPI 1649263591

Dr. Karl D Wittnebel, MD practises Internal Medicine in Los Angeles, California. Graduated from Sanford School of Medicine of University of South Dakota in 1999, 27 years ago. Practices with Cedars-Sinai Medical Center, a 795-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California and Maryland.

Years since qualifying
27
Trained at
Sanford School of Medicine of University of South Dakota
Licensed in
CA, MD
In the registry since
2005
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

8700 Beverly Blvd Becker B113 Cedars Sinai Medical Center - General Internal Medicine
Los Angeles, CA 90048 Not confirmed with CMS for 19 years — call before visiting
Phone: (310) 423-6325
Fax: (310) 423-0436
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence C52959 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence D0062222 (MD)

Record details

NPI number1649263591
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 25, 2005
Last updated in NPPESSeptember 28, 2007

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolSANFORD SCHOOL OF MEDICINE OF UNIVERSITY OF SOUTH DAKOTA
Graduated 1999 (27 years in practice)
Group practice Cedars-Sinai Medical Center — 795 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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 patients62
Services billed 288 a service is one billed item, such as a visit, a test or a procedure
Average patient age68

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 Cedars-Sinai Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 795 clinicians in the practice; 12 are shown here.

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