HALLE M OSTMAN RN
NPI 1275345449
Nurse Practitioner in Point Reyes Station, CA
NPI Status: Active since January 23, 2025
Contact Information
11150 CA-1
POINT REYES STATION, CA
ZIP 94956
Phone: (415) 663-1082
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Female
- Nurse Practitioner
About HALLE OSTMAN
This page provides the complete NPI Profile along with additional information for Halle Ostman, a provider established in Point Reyes Station, California with a medical specialization in Nurse Practitioner. The healthcare provider is registered in the NPI registry with number 1275345449 assigned on January 2025. The practitioner's primary taxonomy code is 363L00000X with license number 95038392 (CA). The provider is registered as an individual and her NPI record was last updated May 2026.
- NPI
- 1275345449
- Provider Name
- HALLE M OSTMAN RN
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 11150 CA-1 POINT REYES STATION, CA 94956
- Location Phone
- (415) 663-1082
- Mailing Address
- 11150 CA-1 POINT REYES STATION, CA 94956
- Mailing Phone
- (415) 663-1082
- Mailing Fax
- Is Sole Proprietor?
- No
- Enumeration Date
- 01-23-2025
- Last Update Date
- 05-26-2026
- Code Navigator
A nurse practitioner (NP) like Halle Ostman is an experienced registered nurse with a master’s or doctoral degree and advanced clinical training. Nurse practitioners can work in many different specialties including primary care, pediatrics, cardiology, emergency, women’s health, oncology or geriatrics. Nurse practitioners provide services like physical exams, order laboratory tests, manage diseases, write prescriptions, etc.
Location Map
Secondary Locations
- 2222 Bancroft Way
Berkeley, CA 94720
(510) 642-2000
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
Nurse Practitioner
- Taxonomy Code
- 363L00000X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- License No.
- 95038392
- License State
- CA
- Taxonomy Description
- (1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
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 | 163WP2201X | Nursing Service Providers | Registered Nurse | 95356160 (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 1275345449, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).
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 61 is 70. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1275345449, enumerated as an "individual" on January 23, 2025.
The provider is located at 11150 CA-1 POINT REYES STATION, CA 94956 and the phone number is (415) 663-1082.
Nurse Practitioner with taxonomy code 363L00000X.
