Josiah Gerdts, M.D., PH.D.
NPI 1659733673 · Neurology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Josiah Gerdts, M.D., PH.D. is a Neurology Physician provider in San Francisco, CA (NPI 1659733673).
Provider details
- NPI number
- 1659733673
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A152707 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
29 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 29 | $157 |
Typical Medicare-allowed amounts for these services range $157–$157 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$24 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1651 4th St Fl 2San Francisco, CA 94158-2324Phone: (415) 353-2069
Registry dates
- Enumerated
- 2016-03-29
- Last updated
- 2021-05-03
- Certified
- 2021-05-03
Frequently asked questions
- What is Josiah Gerdts's NPI number?
- Josiah Gerdts's National Provider Identifier (NPI) is 1659733673, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Josiah Gerdts's specialty?
- Josiah Gerdts is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Josiah Gerdts located?
- Josiah Gerdts's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
- What is Josiah Gerdts's phone number?
- The practice phone number listed in the NPPES registry for Josiah Gerdts is (314) 791-6581.
- Does Josiah Gerdts accept Medicare?
- Josiah Gerdts is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Josiah Gerdts's NPI active?
- Yes — Josiah Gerdts's NPI (1659733673) is active in the NPPES registry as of the last update on 2021-05-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.