Sanna Herwald, MD
NPI 1710449111 · Vascular & Interventional Radiology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Interventional Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sanna Herwald, MD is a Vascular & Interventional Radiology Physician provider in Stanford, CA (NPI 1710449111).
Provider details
- NPI number
- 1710449111
- Entity type
- Individual
- Primary specialty
- Vascular & Interventional Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A181552 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,505 across 9 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
Additional practice locations (2)
- 1101 Van Ness Ave Ste 1120San Francisco, CA 94109-6919Phone: (415) 600-6000
- 800 Highland AvenueMadison, WI 53792-6919Phone: (608) 263-9729
Registry dates
- Enumerated
- 2019-04-03
- Last updated
- 2025-09-29
- Certified
- 2025-09-29
Frequently asked questions
- What is Sanna Herwald's NPI number?
- Sanna Herwald's National Provider Identifier (NPI) is 1710449111, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sanna Herwald's specialty?
- Sanna Herwald is listed in the NPPES registry with a primary specialty of Vascular & Interventional Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Sanna Herwald located?
- Sanna Herwald's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Sanna Herwald's phone number?
- The practice phone number listed in the NPPES registry for Sanna Herwald is (650) 723-4000.
- Does Sanna Herwald accept Medicare?
- Sanna Herwald is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sanna Herwald's NPI active?
- Yes — Sanna Herwald's NPI (1710449111) is active in the NPPES registry as of the last update on 2025-09-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.