Alexander Iwan-Smereka Ludwig, DO
Family Medicine Physician · Lakeport, CA
Alexander Iwan-Smereka Ludwig, DO is a family medicine physician with a practice address in Lakeport, California, and NPI 1467912527, issued on Mar 23, 2019. Check the license (California 20A20376, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alexander Iwan-Smereka Ludwig
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A20376 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5196 Hill RD E Ste 300, Lakeport, CA 95453
- Phone
- (707) 263-6885
- Enumerated
- Mar 23, 2019
- Record last updated
- Mar 12, 2024
- Fax
- (707) 263-6624
- Medicare enrollment
- Enrolled (PECOS I20231222001006); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 2019
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 5196 Hill RD E Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Milcah Gichuru, FNP-BCFamily Nurse Practitioner1700132941
- Kimberly Kirschner, PA-CPhysician Assistant1194567727
- Marc Seeley, DOFamily Medicine Physician1851687602
- Amanda Smithers, PA-CMedical Physician Assistant1184052003
- Nardia Sokol, DPMPodiatrist1700308525
Verify Alexander Iwan-Smereka Ludwig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A20376Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average family medicine physician in 2024
1,816 Medicare Part D claims for 187 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium162 claims
- Lisinopril103 claims
- Levothyroxine Sodium99 claims
- Sertraline Hcl60 claims
- Albuterol Sulfate Hfa59 claims
- Amlodipine Besylate52 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 2 group practices
- Sutter Bay HospitalsLakeport, CA
- Sutter Lakeside Home Medical ServicesLakeport, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Iwan-Smereka Ludwig among 17,133 family medicine physician records in California
Alexander Iwan-Smereka Ludwig, DO is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2019 · median 2005 among the 10,652 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 family medicine physician records list a practice address in Lakeport
They are 9 of the 375 NPPES records with a practice address in Lakeport, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Lakeport → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- David Betat, M.D.Lakeport, CA 954531659387512
- Gary Maes, M.D.Lakeport, CA 954531134127939
- Roseline Michel, DOLakeport, CA 954531881607018
- Marc Seeley, DOLakeport, CA 954531851687602
- Peter Stanley, MDLakeport, CA 954531538233515
- Tiffani Strickland, MDLakeport, CA 954531912467283
- Karen Tait, M.D.Lakeport, CA 954531760505630
- Michael Villongco, DOLakeport, CA 954531326530825
Common questions
What is Alexander Iwan-Smereka Ludwig, DO's NPI number?
Alexander Iwan-Smereka Ludwig, DO's National Provider Identifier (NPI) is 1467912527, issued on Mar 23, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Iwan-Smereka Ludwig, DO located?
The NPPES record lists a practice address at 5196 Hill RD E Ste 300, Lakeport, CA, 95453. Phone: (707) 263-6885. Providers update this record themselves, so call before visiting.
How can I verify Alexander Iwan-Smereka Ludwig, DO's license?
NPPES lists California license number 20A20376, 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 Alexander Iwan-Smereka Ludwig, DO prescribe under Medicare Part D?
In 2024, Alexander Iwan-Smereka Ludwig, DO had 1,816 Medicare Part D claims for 187 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.