Dr. Dennis Obrien is a Billings, Montana based neurologist who is specialized in Neurology. Active license number of Dr. Dennis Obrien is 36099965 for Neurology in Illinois. His current practice location is 801 N 29th St, Billings. Patients can reach him at 406-238-2500. Dr. Dennis Obrien is MD in Neurology and his NPI number (Unique professional ID assigned by NPPES) is 1811981699.
Dr. Dennis Obrien specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Complete Profile:
Dr. Dennis Obrien speciality, credentials, practice address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
| Name: | Dr. Dennis Obrien |
| Specialization: | Neurology |
| Gender: | Male |
| Credentials: | MD |
| Practice Address: | 801 N 29th St, Billings,
Montana, 59101-0905 |
| Phone: | 406-238-2500 |
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details are as mentioned below.
| NPI Number: | 1811981699 |
| NPI Enumeration Date: | 07 Sep, 2005 |
| NPI Last Update On: | 11 Dec, 2014 |
Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Dr. Dennis Obrien are as mentioned below.
| License Number | Specialization | State | Status | |
| 36099965 | Neurology | Illinois | Primary | |
Other Medical Identifiers:
Other legacy medical identifiers associated with Dr. Dennis Obrien such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
| Identifier | Type | State | Issuer |
| 000098136 | Other | Montana | BCBS PIN |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | Dr. Dennis Obrien
Po Box 35100,
Billings, Montana |
| Zip: | 59107-5100 |
| Phone Number: | 406-238-2500 |
Patients can reach Dr. Dennis Obrien at
801 N 29th St, Billings, Montana or can
call to book an appointment on 406-238-2500.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.