Josiah Kenneth Gerdts, M.D., PH.D.
Neurology Physician · San Francisco, CA
Josiah Kenneth Gerdts, M.D., PH.D. is a neurology physician with a practice address in San Francisco, California, and NPI 1659733673, issued on Mar 29, 2016. Check the license (California A152707, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Josiah Kenneth Gerdts
- Credential
- M.D., PH.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- A152707 CA
Self-reported in NPPES; status is on the state search - Practice location
- 505 Parnassus Ave, San Francisco, CA 94143
- Phone
- (314) 791-6581
- Enumerated
- Mar 29, 2016
- Record last updated
- May 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200702000996); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 505 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexander Aabedi, MDStudent in an Organized Health Care Education/Training Program1245971480
- Kathryn Aaronson, RN, CPNPPediatric Nurse Practitioner1992030951
- Sharon AbadaStudent in an Organized Health Care Education/Training Program1003492844
- Abul Abbas, MBBSAnatomic Pathology Physician1881652964
- Jesse Abelson, MDInternal Medicine Physician1083843817
- Rhonald AbitonaAcute Care Nurse Practitioner1164993473
Verify Josiah Kenneth Gerdts in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A152707Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average neurology physician in 2024
82 Medicare Part D claims for 20 beneficiaries, against an average of 1,370 among the 15,005 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $23.51
1 payment: food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 10,858 providers of this specialty with any payment received $8,318.07 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
- Ucsf Medical Group Business ServicesBerkeley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Josiah Kenneth Gerdts among 2,339 neurology physician records in California
Josiah Kenneth Gerdts, M.D., PH.D. is one of 2,339 neurology physician records with a practice address in California. 81% 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 78% of them.
- NPI issued2016 · 78% of these records are older, 19% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2016 · median 2006 among the 1,628 with a school on file
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in San Francisco → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Adam Boxer, M.D.San Francisco, CA 941431841231800
- Dorothee Chabas Chanezon, M.D.San Francisco, CA 941431902832645
- Anthony Chen, MDSan Francisco, CA 941431609834472
- Jacob Elkins, M.D.San Francisco, CA 941431336180298
- Adam Gazzaley, MD PH DSan Francisco, CA 941431932142205
- John Hixson, MDSan Francisco, CA 941431336130475
- Catherine Hoerth, M.D.San Francisco, CA 941431063449866
- Viktoriya Irodenko, M.D.San Francisco, CA 941431023044997
Common questions
What is Josiah Kenneth Gerdts, M.D., PH.D.'s NPI number?
Josiah Kenneth Gerdts, M.D., PH.D.'s National Provider Identifier (NPI) is 1659733673, issued on Mar 29, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Josiah Kenneth Gerdts, M.D., PH.D. located?
The NPPES record lists a practice address at 505 Parnassus Ave, San Francisco, CA, 94143. Phone: (314) 791-6581. Providers update this record themselves, so call before visiting.
How can I verify Josiah Kenneth Gerdts, M.D., PH.D.'s license?
NPPES lists California license number A152707, 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 Josiah Kenneth Gerdts, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Josiah Kenneth Gerdts, M.D., PH.D. had 82 Medicare Part D claims for 20 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Josiah Kenneth Gerdts, M.D., PH.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.