Troels Nielsen, MD, PHD
NPI 1235651860 · Neurological Surgery Physician · Stanford, CA
Troels Nielsen, MD, PHD is a Neurological Surgery Physician provider in Stanford, CA (NPI 1235651860).
Provider details
- NPI number
- 1235651860
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 494 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-07-14
- Last updated
- 2017-08-04
Frequently asked questions
- What is Troels Nielsen's NPI number?
- Troels Nielsen's National Provider Identifier (NPI) is 1235651860, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Troels Nielsen's specialty?
- Troels Nielsen is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Troels Nielsen located?
- Troels Nielsen's practice location on file with NPPES is 300 Pasteur Dr Rm 281, Stanford, CA 94305-2200.
- What is Troels Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Troels Nielsen is (650) 334-9700.
- Is Troels Nielsen's NPI active?
- Yes — Troels Nielsen's NPI (1235651860) is active in the NPPES registry as of the last update on 2017-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.