DR. TROELS HALFELD NIELSEN MD, PHD
NPI 1235651860
Neurological Surgery in Stanford, CA
NPI Status: Active since July 14, 2017
Contact Information
300 PASTEUR DR RM 281
STANFORD, CA
ZIP 94305
Phone: (650) 334-9700
- Individual
- Male
- Neurological Surgery
About TROELS NIELSEN
This page provides the complete NPI Profile along with additional information for Troels Nielsen, a provider established in Stanford, California with a medical specialization in Neurological Surgery. The healthcare provider is registered in the NPI registry with number 1235651860 assigned on July 2017. The practitioner's primary taxonomy code is 207T00000X with license number F494 (CA). The provider is registered as an individual and his NPI record was last updated 9 years ago.
- NPI
- 1235651860
- Provider Name
- DR. TROELS HALFELD NIELSEN MD, PHD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 300 PASTEUR DR RM 281 STANFORD, CA 94305
- Location Phone
- (650) 334-9700
- Mailing Address
- 350 SHARON PARK DR APT S21 MENLO PARK, CA 94025
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-14-2017
- Last Update Date
- 08-04-2017
- Code Navigator
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Neurological Surgery
- Taxonomy Code
- 207T00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- F494
- License State
- CA
- Taxonomy Description
- A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 208600000X | Allopathic & Osteopathic Physicians | Surgery | 494 (CA) |
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1235651860, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 60 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1235651860, enumerated as an "individual" on July 14, 2017.
The provider is located at 300 PASTEUR DR RM 281 STANFORD, CA 94305 and the phone number is (650) 334-9700.
Neurological Surgery with taxonomy code 207T00000X.
