Karen Rasmussen, M.D.
NPI 1750510368 · Family Medicine Physician · Los Alamitos, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Rasmussen, M.D. is a Family Medicine Physician provider in Los Alamitos, CA (NPI 1750510368).
Provider details
- NPI number
- 1750510368
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A109736 (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
16 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
493 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 160 | $97 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 139 | $138 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 85 | $140 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 73 | $21 |
| Administration of Influenza Virus VaccineG0008 | 24 | $35 |
| Administration of Pneumococcal VaccineG0009 | 12 | $35 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 89 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 304 | 99 |
| Levothyroxine Sodium | 256 | 69 |
| Losartan Potassium | 171 | 51 |
| Amlodipine Besylate | 152 | 50 |
| Alendronate Sodium | 117 | 36 |
| Simvastatin | 111 | 33 |
| Lisinopril | 102 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-07-06
- Last updated
- 2025-11-25
- Certified
- 2025-11-25
Frequently asked questions
- What is Karen Rasmussen's NPI number?
- Karen Rasmussen's National Provider Identifier (NPI) is 1750510368, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Rasmussen's specialty?
- Karen Rasmussen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Rasmussen located?
- Karen Rasmussen's practice location on file with NPPES is 3460 Katella Ave, Los Alamitos, CA 90720-2334.
- What is Karen Rasmussen's phone number?
- The practice phone number listed in the NPPES registry for Karen Rasmussen is (562) 594-6599.
- Does Karen Rasmussen accept Medicare?
- Karen Rasmussen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Rasmussen's NPI active?
- Yes — Karen Rasmussen's NPI (1750510368) is active in the NPPES registry as of the last update on 2025-11-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.