MR. MATTHEW JOSEPH TIERNEY N.P., M.S.N., R.N.
NPI 1447287917
Registered Nurse - Medical-Surgical in San Francisco, CA
NPI Status: Active since June 28, 2006
Contact Information
1001 POTRERO AVE
SAN FRANCISCO GENERAL HOSPITAL, DEPT. OF PSYCHIATRY
SAN FRANCISCO, CA
ZIP 94110
Phone: (415) 206-4310
Fax: (415) 206-6875
- Individual
- Male
- Registered Nurse
- Medical-Surgical
- PECOS Enrolled
About MATTHEW TIERNEY
This page provides the complete NPI Profile along with additional information for Matthew Tierney, a provider established in San Francisco, California with a medical specialization in Registered Nurse, focusing in medical-surgical . The healthcare provider is registered in the NPI registry with number 1447287917 assigned on June 2006. The practitioner's primary taxonomy code is 163WM0705X with license number RN546728 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1447287917
- Provider Name
- MR. MATTHEW JOSEPH TIERNEY N.P., M.S.N., R.N.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1001 POTRERO AVE SAN FRANCISCO GENERAL HOSPITAL, DEPT. OF PSYCHIATRY SAN FRANCISCO, CA 94110
- Location Phone
- (415) 206-4310
- Location Fax
- (415) 206-6875
- Mailing Address
- 239 ROOSEVELT WAY SAN FRANCISCO, CA 94114
- Mailing Phone
- (415) 552-5859
- Is Sole Proprietor?
- No
- Enumeration Date
- 06-28-2006
- Last Update Date
- 09-11-2025
- Code Navigator
A registered nurse (RN) like Matthew Tierney coordinates and provides patient care and educates patients about various health conditions. Registered nurses give advice and emotional support to patients and their families. The typical duties of a registered nurse include: assessing patient conditions, record medical histories and symptoms, observe patients and record the observations, administer medicines and treatments, consult and collaborate with doctors, operate and monitor medical equipment, teach patients and families how to manage injuries or illnesses, etc.
Registered nurses typically work as part of a team with physicians and other healthcare professionals. In some medical teams registered nurses supervise nursing assistants, licensed practical nurses, and home health aides.
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
Registered Nurse Medical-Surgical
- Taxonomy Code
- 163WM0705X
- Type
- Nursing Service Providers
- License No.
- RN546728
- License State
- CA
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 | 363LP0808X | Physician Assistants & Advanced Practice Nursing Providers | Nurse Practitioner | NPF11973 (CA) |
Medicare Participation & PECOS Enrollment Status
Matthew Tierney is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Reviews for MR. MATTHEW JOSEPH TIERNEY N.P., M.S.N., R.N.
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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 1447287917, we treat the final digit (7) 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 73. The final step is to find the difference between that total and the next multiple of ten (80 - 73 = 7).
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 73 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SAN FRANCISCO, CA 94110
SAN FRANCISCO, CA 94110
SAN FRANCISCO, CA 94110
SAN FRANCISCO, CA 94110
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1447287917, enumerated as an "individual" on June 28, 2006.
The provider is located at 1001 POTRERO AVE SAN FRANCISCO GENERAL HOSPITAL, DEPT. OF PSYCHIATRY SAN FRANCISCO, CA 94110 and the phone number is (415) 206-4310.
Registered Nurse with taxonomy code 163WM0705X and a focus in Medical-Surgical.
