Karen Suskiewicz, MD
NPI 1770508533 · Internal Medicine Physician · Los Altos, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Suskiewicz, MD is a Internal Medicine Physician provider in Los Altos, CA (NPI 1770508533).
Provider details
- NPI number
- 1770508533
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A69790 (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
19 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
585 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 | 160 | $155 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 145 | $111 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 142 | $157 |
| Administration of Influenza Virus VaccineG0008 | 42 | $39 |
| Admn Sarscov2 Vacc 1 Dose90480 | 32 | $52 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 30 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 325 | 85 |
| Amlodipine Besylate | 153 | 39 |
| Losartan Potassium | 143 | 38 |
| Lisinopril | 105 | 24 |
| Levothyroxine Sodium | 87 | 22 |
| Metoprolol Succinate | 81 | 20 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-13
- Last updated
- 2023-03-07
- Certified
- 2020-05-27
Frequently asked questions
- What is Karen Suskiewicz's NPI number?
- Karen Suskiewicz's National Provider Identifier (NPI) is 1770508533, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Suskiewicz's specialty?
- Karen Suskiewicz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Suskiewicz located?
- Karen Suskiewicz's practice location on file with NPPES is 370 Distel Circle, Los Altos, CA 94022.
- What is Karen Suskiewicz's phone number?
- The practice phone number listed in the NPPES registry for Karen Suskiewicz is (650) 254-5200.
- Does Karen Suskiewicz accept Medicare?
- Karen Suskiewicz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Suskiewicz's NPI active?
- Yes — Karen Suskiewicz's NPI (1770508533) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.