Ellen O'Malley Kato, FNP
Nurse Practitioner · San Francisco, CA
Ellen O'Malley Kato, FNP is a nurse practitioner with a practice address in San Francisco, California, and NPI 1598044844, issued on Aug 4, 2011. Check the license (California 21049, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ellen O'Malley Kato
- Credential
- FNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 21049 CA
761433 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Embarcadero Ctr Lbby Level, San Francisco, CA 94111
- Phone
- (888) 663-6331
- Enumerated
- Aug 4, 2011
- Record last updated
- Mar 17, 2025
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20160713002843); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 2 Embarcadero Ctr Lbby Level
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan AdamNurse Practitioner1033530811
- Julie Ahlrich, FNP-BCFamily Nurse Practitioner1780802629
- Ann Ala, NPFamily Nurse Practitioner1083948012
- Jennifer Alexander, FNPFamily Nurse Practitioner1205179249
- Sameerah Ali, FNP-BCNurse Practitioner1558531566
- Amanda Anderson, P.A.Physician Assistant1104292267
Verify Ellen O'Malley Kato in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 21049Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average nurse practitioner in 2024
39 Medicare Part D claims for 18 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $34.88
2 payments; by number, the most common kind was education; the largest payer was Pfizer Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- One Medical Group IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen O'Malley Kato among 8,223 nurse practitioner records in California
Ellen O'Malley Kato, FNP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 34% of them.
- NPI issued2011 · 34% of these records are older, 63% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2011 · median 2017 among the 3,425 with a school on file
- Record last updated2025 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nurse Practitioner providers in California
There are 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in San Francisco → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Sameerah Ali, FNP-BCSan Francisco, CA 941111558531566
- Stacey Baldwin, FNP-CSan Francisco, CA 941111285815860
- Veronda Carter-Smith, FNPSan Francisco, CA 941111437286432
- Allyson D'Amico, NPSan Francisco, CA 941111205118858
- Rachel Freitas, N.P.San Francisco, CA 941111225369739
- Mary Froehlich, GNPSan Francisco, CA 941111023222551
- Marcia Jacobs, F.N.P. - B.C.San Francisco, CA 941111841446556
- Tessa Lannoy, FNPSan Francisco, CA 941111801170725
Common questions
What is Ellen O'Malley Kato, FNP's NPI number?
Ellen O'Malley Kato, FNP's National Provider Identifier (NPI) is 1598044844, issued on Aug 4, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Ellen O'Malley Kato, FNP located?
The NPPES record lists a practice address at 2 Embarcadero Ctr Lbby Level, San Francisco, CA, 94111. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Ellen O'Malley Kato, FNP's license?
NPPES lists California license number 21049, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ellen O'Malley Kato, FNP prescribe under Medicare Part D?
In 2024, Ellen O'Malley Kato, FNP had 39 Medicare Part D claims for 18 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.