Felix Karp, M.D.
NPI 1225309164 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Felix Karp, M.D. is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1225309164).
Provider details
- NPI number
- 1225309164
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A127329 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 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
615 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 233 | $77 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 126 | $80 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 75 | $116 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 70 | $113 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 67 | $128 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 44 |
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 |
|---|---|---|
| Doxycycline Hyclate | 58 | 57 |
| Prednisone | 20 | 20 |
| Furosemide | 13 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 13 | 11 |
| Pantoprazole Sodium | 12 | — |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 12 | 12 |
| Metoprolol Tartrate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-01-24
- Last updated
- 2015-06-05
Frequently asked questions
- What is Felix Karp's NPI number?
- Felix Karp's National Provider Identifier (NPI) is 1225309164, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Felix Karp's specialty?
- Felix Karp is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Felix Karp located?
- Felix Karp's practice location on file with NPPES is 1200 N State St, Los Angeles, CA 90033-1029.
- What is Felix Karp's phone number?
- The practice phone number listed in the NPPES registry for Felix Karp is (323) 226-7556.
- Does Felix Karp accept Medicare?
- Felix Karp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Felix Karp's NPI active?
- Yes — Felix Karp's NPI (1225309164) is active in the NPPES registry as of the last update on 2015-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.