Josiah Ambrose, MD
NPI 1699985747 · Neurology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Josiah Ambrose, MD is a Neurology Physician provider in San Francisco, CA (NPI 1699985747).
Provider details
- NPI number
- 1699985747
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A99517 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 113 | 14 |
| Lamotrigine | 94 | 28 |
| Cenobamatebrand: Xcopri | 74 | 16 |
| Lacosamide | 60 | 20 |
| Levetiracetam | 44 | 15 |
| Lamotriginebrand: Lamotrigine Er | 38 | 11 |
| Lorazepam | 36 | 14 |
| Cannabidiol (cbd) |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$628 across 2 records (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
Registry dates
- Enumerated
- 2007-05-23
- Last updated
- 2022-02-11
Frequently asked questions
- What is Josiah Ambrose's NPI number?
- Josiah Ambrose's National Provider Identifier (NPI) is 1699985747, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Josiah Ambrose's specialty?
- Josiah Ambrose is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Josiah Ambrose located?
- Josiah Ambrose's practice location on file with NPPES is Ucsf Dept of Neurology, San Francisco, CA 94143-0001.
- What is Josiah Ambrose's phone number?
- The practice phone number listed in the NPPES registry for Josiah Ambrose is (415) 353-3549.
- Does Josiah Ambrose accept Medicare?
- Josiah Ambrose is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Josiah Ambrose's NPI active?
- Yes — Josiah Ambrose's NPI (1699985747) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.