Karen Jill Suskiewicz, MD
Internal Medicine Physician · Los Altos, CA
Karen Jill Suskiewicz, MD is an internal medicine physician with a practice address in Los Altos, California, and NPI 1770508533, issued on Jul 13, 2006. Check the license (California A69790, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Jill Suskiewicz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A69790 CA
Self-reported in NPPES; status is on the state search - Practice location
- 370 Distel Circle, Los Altos, CA 94022
- Phone
- (650) 254-5200
- Enumerated
- Jul 13, 2006
- Record last updated
- Mar 7, 2023
- Medicare enrollment
- Enrolled (PECOS I20090302000154); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 370 Distel Circle
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karen Jill Suskiewicz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A69790Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,527 Medicare Part D claims for 281 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 17 claims were for opioids.
Most prescribed
- Atorvastatin Calcium325 claims
- Amlodipine Besylate153 claims
- Losartan Potassium143 claims
- Lisinopril105 claims
- Levothyroxine Sodium87 claims
- Metoprolol Succinate81 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationMilpitas, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
29 internal medicine physician records list a practice address in Los Altos
They are 29 of the 718 NPPES records with a practice address in Los Altos, and 17,696 internal medicine physician records in California.
All 29 in Los Altos → All 17,696 in California → Every provider in Los Altos →
Other internal medicine physician records in California
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- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Karen Jill Suskiewicz, MD's NPI number?
Karen Jill Suskiewicz, MD's National Provider Identifier (NPI) is 1770508533, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Jill Suskiewicz, MD located?
The NPPES record lists a practice address at 370 Distel Circle, Los Altos, CA, 94022. Phone: (650) 254-5200. Providers update this record themselves, so call before visiting.
How can I verify Karen Jill Suskiewicz, MD's license?
NPPES lists California license number A69790, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen Jill Suskiewicz, MD prescribe under Medicare Part D?
In 2024, Karen Jill Suskiewicz, MD had 2,527 Medicare Part D claims for 281 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.