Dereck H. Ko, M.S.N.
Family Nurse Practitioner · San Francisco, CA
Dereck H. Ko, M.S.N. is a family nurse practitioner with a practice address in San Francisco, California, and NPI 1861411324, issued on Jul 18, 2006. Check the license (California 15088, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dereck H. Ko
- Credential
- M.S.N.
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 15088 CA
538312 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave # A502, San Francisco, CA 94143
- Phone
- (415) 353-2421
- Enumerated
- Jul 18, 2006
- Record last updated
- Apr 27, 2026
- Fax
- (415) 353-2467
- Medicare enrollment
- Enrolled (PECOS I20130529000205); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 400 Parnassus Ave # A502
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Peter Sayre, M.D.Internal Medicine Physician1841308517
Verify Dereck H. Ko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 15088Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average family nurse practitioner in 2024
538 Medicare Part D claims for 62 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Acyclovir49 claims
- Sulfamethoxazole-Trimethoprim34 claims
- Triamcinolone Acetonide19 claims
- Azithromycin18 claims
- Pantoprazole Sodium18 claims
- Prednisone18 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.5 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).
Industry payments in 2024: $20.10
1 payment: food and beverage; the largest payer was Abbvie Inc. The 99,489 providers of this specialty with any payment received $650.95 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 2 group practices
- Ucsf Medical Group Business ServicesBerkeley, CA
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dereck H. Ko among 16,966 family nurse practitioner records in California
Dereck H. Ko, M.S.N. is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 93% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2004 · median 2019 among the 6,793 with a school on file
- Record last updated2026 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
662 family nurse practitioner records list a practice address in San Francisco
They are 662 of the 38,143 NPPES records with a practice address in San Francisco, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in San Francisco → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
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- Lisa Digiorgio-Haag, NPSan Francisco, CA 941431760662928
- Suzanne Eder, FNPSan Francisco, CA 941431801838933
- Fabienne Hollinger, RN, MSN, FNP-CSan Francisco, CA 941431336450956
- Sarah Lange, N.P.San Francisco, CA 941431114115565
Common questions
What is Dereck H. Ko, M.S.N.'s NPI number?
Dereck H. Ko, M.S.N.'s National Provider Identifier (NPI) is 1861411324, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dereck H. Ko, M.S.N. located?
The NPPES record lists a practice address at 400 Parnassus Ave # A502, San Francisco, CA, 94143. Phone: (415) 353-2421. Providers update this record themselves, so call before visiting.
How can I verify Dereck H. Ko, M.S.N.'s license?
NPPES lists California license number 15088, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Dereck H. Ko, M.S.N. prescribe under Medicare Part D?
In 2024, Dereck H. Ko, M.S.N. had 538 Medicare Part D claims for 62 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Dereck H. Ko, M.S.N.'s MIPS final score?
The 2023 MIPS final score is 74.5 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.