Karen Lizarraga, PA-C
NPI 1225783558 · Physician Assistant · Gaithersburg, MD
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Lizarraga, PA-C is a Physician Assistant provider in Gaithersburg, MD (NPI 1225783558).
Provider details
- NPI number
- 1225783558
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
211 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) |
|---|---|---|
| Advance Care Planning, First 30 Minutes99497 | 43 | $75 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 36 | $121 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 31 | $113 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 26 | $14 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 26 | $169 |
| Ultrasound Study of Arm and Leg Arteries93922 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 153 | 55 |
| Levothyroxine Sodium | 101 | 25 |
| Amlodipine Besylate | 97 | 31 |
| Metformin Hcl | 59 | 21 |
| Losartan Potassium | 50 | 18 |
| Rosuvastatin Calcium | 46 | 15 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-02-15
- Last updated
- 2022-02-15
- Certified
- 2022-02-15
Frequently asked questions
- What is Karen Lizarraga's NPI number?
- Karen Lizarraga's National Provider Identifier (NPI) is 1225783558, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Lizarraga's specialty?
- Karen Lizarraga is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Lizarraga located?
- Karen Lizarraga's practice location on file with NPPES is 9715 Leatherfern Ter Apt B, Gaithersburg, MD 20886-6338.
- What is Karen Lizarraga's phone number?
- The practice phone number listed in the NPPES registry for Karen Lizarraga is (240) 447-5645.
- Does Karen Lizarraga accept Medicare?
- Karen Lizarraga is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Lizarraga's NPI active?
- Yes — Karen Lizarraga's NPI (1225783558) is active in the NPPES registry as of the last update on 2022-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.