Karl Wittnebel, MD
NPI 1649263591 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Wittnebel, MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1649263591).
Provider details
- NPI number
- 1649263591
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D0062222 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
249 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 152 | $102 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 49 | $126 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 31 | $156 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 17 | $194 |
Typical Medicare-allowed amounts for these services range $102–$194 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 77 | 19 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 38 | — |
| Buprenorphine Hcl | 37 | 11 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 34 | — |
| Oxycodone Hcl | 34 | — |
| Methocarbamol | 21 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-25
- Last updated
- 2007-09-28
Frequently asked questions
- What is Karl Wittnebel's NPI number?
- Karl Wittnebel's National Provider Identifier (NPI) is 1649263591, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Wittnebel's specialty?
- Karl Wittnebel is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Wittnebel located?
- Karl Wittnebel's practice location on file with NPPES is 8700 Beverly Blvd, Becker B113, Los Angeles, CA 90048.
- What is Karl Wittnebel's phone number?
- The practice phone number listed in the NPPES registry for Karl Wittnebel is (310) 423-6325.
- Does Karl Wittnebel accept Medicare?
- Karl Wittnebel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Wittnebel's NPI active?
- Yes — Karl Wittnebel's NPI (1649263591) is active in the NPPES registry as of the last update on 2007-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.