Eileen Katherine Nenninger, MD
Infectious Disease Physician · San Leandro, CA
Eileen Katherine Nenninger, MD is an infectious disease physician with a practice address in San Leandro, California, and NPI 1295199966, issued on Apr 8, 2016. Check the license (California A186925, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Eileen Katherine Nenninger
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A186925 CA
Self-reported in NPPES; status is on the state search - Practice location
- 13851 E 14TH St Ste 308, San Leandro, CA 94578
- Phone
- (925) 463-1318
- Enumerated
- Apr 8, 2016
- Record last updated
- Aug 8, 2023
- Medicare enrollment
- Enrolled (PECOS I20230914000032); accepts Medicare assignment
- Medical or professional school
- University Of Virginia School Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 13851 E 14TH St Ste 308
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel KaplanEndocrinology, Diabetes & Metabolism Physician1225491632
- Richard Shen, M.D.Infectious Disease Physician1942663919
Verify Eileen Katherine Nenninger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A186925Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 91 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Alameda Health SystemSan Leandro, CA
- Diablo Infectious Disease Consultative Service Med Grp IncSan Leandro, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eileen Katherine Nenninger among 1,119 infectious disease physician records in California
Eileen Katherine Nenninger, MD is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 86% of them.
- NPI issued2016 · 86% of these records are older, 12% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2016 · median 2003 among the 735 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in San Leandro → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Richard Shen, M.D.San Leandro, CA 945781942663919
- Jeffrey Silvers, M.D.San Leandro, CA 945781033292701
- Jeffrey Klausner, MDSan Leandro, CA 945771508973249
- Nicholas Moss, MDSan Leandro, CA 945771124101662
- Connie Park, MDSan Leandro, CA 945771689816621
- William Joseph, M.D.San Ramon, CA 945831356423255
- Valerie Chirurgi, MDPleasanton, CA 945881992777080
- Christina Hopson, DODublin, CA 945681265404537
Common questions
What is Eileen Katherine Nenninger, MD's NPI number?
Eileen Katherine Nenninger, MD's National Provider Identifier (NPI) is 1295199966, issued on Apr 8, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Eileen Katherine Nenninger, MD located?
The NPPES record lists a practice address at 13851 E 14TH St Ste 308, San Leandro, CA, 94578. Phone: (925) 463-1318. Providers update this record themselves, so call before visiting.
How can I verify Eileen Katherine Nenninger, MD's license?
NPPES lists California license number A186925, 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.
What is Eileen Katherine Nenninger, MD's MIPS final score?
The 2023 MIPS final score is 91 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.