Jennifer Jean Nissly Larsen, M.D.
Internal Medicine Physician · South San Francisco, CA
Jennifer Jean Nissly Larsen, M.D. is an internal medicine physician with a practice address in South San Francisco, California, and NPI 1578839486, issued on Mar 25, 2012. Check the license (California A122827, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jennifer Jean Nissly Larsen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A122827 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 EL Camino Real Dept 384, South San Francisco, CA 94080
- Phone
- (650) 742-2000
- Enumerated
- Mar 25, 2012
- Record last updated
- Jan 10, 2022
- Medicare enrollment
- Enrolled (PECOS I20141229002156); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 2011
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Jennifer Jean Nissly Larsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A122827Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
337 Medicare Part D claims for 124 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Cefpodoxime Proxetil34 claims
- Furosemide23 claims
- Doxycycline Monohydrate19 claims
- Metoprolol Tartrate18 claims
- Prednisone14 claims
- Azithromycin11 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
- Permanente Medical Group IncSouth San Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer Jean Nissly Larsen among 17,696 internal medicine physician records in California
Jennifer Jean Nissly Larsen, M.D. is one of 17,696 internal medicine 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 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2011 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
63 internal medicine physician records list a practice address in South San Francisco
They are 63 of the 1,173 NPPES records with a practice address in South San Francisco, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in South San Francisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michelle Caughey, MDSouth San Francisco, CA 940801861570475
- William Chung, MDSouth San Francisco, CA 940801083792683
- Stephen Howe, MDSouth San Francisco, CA 940801497833024
- Hulya Kaymaz, MDSouth San Francisco, CA 940801295813822
- Issa Khouri, MDSouth San Francisco, CA 940801285712885
- Grace Lay, DOSouth San Francisco, CA 940801629156211
- Timothy Liao, MDSouth San Francisco, CA 940801114005733
- Jae Park, MDSouth San Francisco, CA 940801477631075
Common questions
What is Jennifer Jean Nissly Larsen, M.D.'s NPI number?
Jennifer Jean Nissly Larsen, M.D.'s National Provider Identifier (NPI) is 1578839486, issued on Mar 25, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Jean Nissly Larsen, M.D. located?
The NPPES record lists a practice address at 1200 EL Camino Real Dept 384, South San Francisco, CA, 94080. Phone: (650) 742-2000. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Jean Nissly Larsen, M.D.'s license?
NPPES lists California license number A122827, 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 Jennifer Jean Nissly Larsen, M.D. prescribe under Medicare Part D?
In 2024, Jennifer Jean Nissly Larsen, M.D. had 337 Medicare Part D claims for 124 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.