Karl D. Wittnebel, MD
Internal Medicine Physician · Los Angeles, CA
Karl D. Wittnebel, MD is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1649263591, issued on Aug 25, 2005. Check the license (California C52959, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karl D. Wittnebel
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C52959 CA
D0062222 MD
Self-reported in NPPES; status is on the state search - Practice location
- 8700 Beverly Blvd, Becker B113, Los Angeles, CA 90048
- Phone
- (310) 423-6325
- Enumerated
- Aug 25, 2005
- Record last updated
- Sep 28, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (310) 423-0436
- Medicare enrollment
- Enrolled (PECOS I20071207000658); accepts Medicare assignment
- Medical or professional school
- Sanford School Of Medicine Of University Of South Dakota, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Karl D. Wittnebel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C52959Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
324 Medicare Part D claims for 36 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 120 claims were for opioids.
Most prescribed
- Buprenorphine-Naloxone77 claims
- Oxycodone-Acetaminophen38 claims
- Buprenorphine Hcl37 claims
- Hydrocodone-Acetaminophen34 claims
- Oxycodone Hcl34 claims
- Methocarbamol21 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 practice group's MIPS final score for 2023 (Medicare payment program): 87.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Karl D. Wittnebel among 17,696 internal medicine physician records in California
Karl D. Wittnebel, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1999 · median 2004 among the 11,065 with a school on file
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- George Chaux, M.D.Los Angeles, CA 900481619938941
- Anish Desai, M.D.Los Angeles, CA 900481518928886
- Amanda Ewing, M.D.West Hollywood, CA 900481982661922
- Farshid Fararooy, M.D.Los Angeles, CA 900481922045939
- Eleonora Fedonenko, M.D.Los Angeles, CA 900481790721850
- Christina Harris, MDLos Angeles, CA 900481073553962
- Homayoon Khanlou, MDLos Angeles, CA 900481356335277
- Dorothy Lowe, M.D.Los Angeles, CA 900481275577835
Common questions
What is Karl D. Wittnebel, MD's NPI number?
Karl D. Wittnebel, MD's National Provider Identifier (NPI) is 1649263591, issued on Aug 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Karl D. Wittnebel, MD located?
The NPPES record lists a practice address at 8700 Beverly Blvd, Becker B113, Los Angeles, CA, 90048. Phone: (310) 423-6325. Providers update this record themselves, so call before visiting.
How can I verify Karl D. Wittnebel, MD's license?
NPPES lists California license number C52959, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karl D. Wittnebel, MD prescribe under Medicare Part D?
In 2024, Karl D. Wittnebel, MD had 324 Medicare Part D claims for 36 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Karl D. Wittnebel, MD's MIPS final score?
The 2023 MIPS final score is 87.7 of 100, reported for the practice group. 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.