MARYANNE O'BRIEN NP
NPI 1851185789
Nurse Practitioner - Women's Health in Indianapolis, IN
NPI Status: Active since April 07, 2025
Contact Information
9333 N MERIDIAN ST STE 110
INDIANAPOLIS, IN
ZIP 46260
Phone: (317) 669-0820
Fax: (855) 618-2432
- Individual
- Female
- Nurse Practitioner
- Women's Health
- Opted-Out Medicare
About MARYANNE O'BRIEN
This page provides the complete NPI Profile along with additional information for Maryanne O'brien, a provider established in Indianapolis, Indiana with a medical specialization in Nurse Practitioner, focusing in women's health . The healthcare provider is registered in the NPI registry with number 1851185789 assigned on April 2025. The practitioner's primary taxonomy code is 363LW0102X with license number 71016378A (IN). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1851185789
- Provider Name
- MARYANNE O'BRIEN NP
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 9333 N MERIDIAN ST STE 110 INDIANAPOLIS, IN 46260
- Location Phone
- (317) 669-0820
- Location Fax
- (855) 618-2432
- Mailing Address
- 9333 N MERIDIAN ST STE 110 INDIANAPOLIS, IN 46260
- Mailing Phone
- (317) 669-0820
- Mailing Fax
- (855) 618-2432
- Is Sole Proprietor?
- No
- Enumeration Date
- 04-07-2025
- Last Update Date
- 04-07-2025
- Code Navigator
A nurse practitioner (NP) like Maryanne O'brien 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.
The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Maryanne O'brien opted out of Medicare effective on 05-23-2025 until 05-23-2027. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare and cannot order and refer services to other healthcare providers.
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
Nurse Practitioner Women's Health
- Taxonomy Code
- 363LW0102X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- License No.
- 71016378A
- License State
- IN
Medicare Participation & PECOS Enrollment Status
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.
Opted-Out of Medicare? Yes
Opt-Out Effective Date: 05-23-2025
Opt-Out End Date: 05-23-2027
Eligible to Order and Refer? No
Reviews for MARYANNE O'BRIEN NP
There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.
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 1851185789, 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 1851185789, enumerated as an "individual" on April 07, 2025.
The provider is located at 9333 N MERIDIAN ST STE 110 INDIANAPOLIS, IN 46260 and the phone number is (317) 669-0820.
Nurse Practitioner with taxonomy code 363LW0102X and a focus in Women's Health.
