Jessica Kassis, M.D.
Obstetrics & Gynecology Physician · Portola Valley, CA
Jessica Kassis, M.D. is an obstetrics & gynecology physician with a practice address in Portola Valley, California, and NPI 1033394424, issued on Jan 3, 2008. Check the license (California A105126, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jessica Kassis
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A105126 CA
Self-reported in NPPES; status is on the state search - Practice location
- 150 Portola RD Ste A, Portola Valley, CA 94028
- Phone
- (650) 585-3272
- Enumerated
- Jan 3, 2008
- Record last updated
- Apr 14, 2025
- Fax
- (650) 860-1830
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 150 Portola RD Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nile Jones, RNRegistered Nurse1720946049
Verify Jessica Kassis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A105126Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
268 Medicare Part D claims for 66 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Estradiol54 claims
- Estradiol (Twice Weekly)30 claims
- Dotti26 claims
- Progesterone26 claims
- Estradiol (Once Weekly)25 claims
- Estring21 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.
Jessica Kassis among 5,088 obstetrics & gynecology physician records in California
Jessica Kassis, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 62% of them.
- NPI issued2008 · 62% of these records are older, 34% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2025 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 obstetrics & gynecology physician records list a practice address in Portola Valley
They are 2 of the 84 NPPES records with a practice address in Portola Valley, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Portola Valley → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Rachel PerlmanPortola Valley, CA 940281649339045
- Aroti Achari, M.D.Menlo Park, CA 940251144458951
- Kamilee Christenson, MDMenlo Park, CA 940251851652242
- Jennifer Conti, M.D., M.S.Menlo Park, CA 940251457632739
- Paiyarut Kanjanavaikoon, MDMenlo Park, CA 940251861634792
- Nanette Lashay, MDMenlo Park, CA 940251407934094
- Amanda Little-Richardson, MDMenlo Park, CA 940251912392655
- Francis McNee, MDMenlo Park, CA 940251366406001
Common questions
What is Jessica Kassis, M.D.'s NPI number?
Jessica Kassis, M.D.'s National Provider Identifier (NPI) is 1033394424, issued on Jan 3, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jessica Kassis, M.D. located?
The NPPES record lists a practice address at 150 Portola RD Ste A, Portola Valley, CA, 94028. Phone: (650) 585-3272. Providers update this record themselves, so call before visiting.
How can I verify Jessica Kassis, M.D.'s license?
NPPES lists California license number A105126, 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 Jessica Kassis, M.D. prescribe under Medicare Part D?
In 2024, Jessica Kassis, M.D. had 268 Medicare Part D claims for 66 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.