Dr. Walter A. Lajara-Nanson
- Gender: Male
- Experience: 30 years
- Graduation year: 1991
- Sole propriator: No
- NPI: 1528050283
Dr. Walter A. Lajara-Nanson M.D.
Neurologist
He is located at 1401 25th Street South 3rd Floor in Great Falls, MT 59405. Can help patients with the following: Antisocial Personality Disorder (ASPD), Hypersomnia, Neuropathic Pain, PANDAS, Peripheral Nerve Tumors, Progressive Neurological Disorders. His National Provider Identifier (NPI) number is 1528050283. Appointment can be made via the phone number (406) 731-8888. He is affiliated with 2 practices and 2 hospitals.
Conditions treated
Dr. Walter A. Lajara-Nanson, being an neurologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Walter A. Lajara-Nanson.
- Alzheimer's Disease
- Amnesia
- Amyotrophic Lateral Sclerosis (ALS)
- Anorexia Nervosa
- Antisocial Personality Disorder (ASPD)
- Anxiety
- Aphasia
- Asperger Syndrome (AS)
- Attention-Deficit/Hyperactivity Disorder (ADHD)
- Autism
- Avoidant Personality Disorder
- Binge Eating Disorder
- Bipolar Disorder
- Body Dysmorphic Disorder (BDD)
- Borderline Personality Disorder (BPD)
- Brain Aneurysm
- Brain Damage
- Brain Hemorrhage
- Bulimia Nervosa
- Cerebral Palsy (CP)
- Cervical Radiculopathy
- Charcot-Marie-Tooth Disease (CMT)
- Claudication
- Cluster Headaches
- Complex Regional Pain Syndrome
- Concussion
- Creutzfeldt-Jakob Disease (CJD)
- Degenerative Disc Disease (DDD)
- Dementia
- Depression
- Dissociative Fugue
- Dissociative Identity Disorder
- Double Vision
- Drug Abuse
- Dyslexia
- Dystonia
- Early Onset Alzheimers
- Eating Disorder
- Encephalitis
- Encephalopathy
- Epilepsy
- Face Blindness
- Fainting
- Febrile Seizure
- Fragile X Syndrome (FXS)
- Grief
- Guillain-Barre Syndrome (GBS)
- Head Injury
- Headache
- Heart Disease
- Herniated Disc
- Huntington's Disease (HD)
- Hypersomnia
- Insomnia
- Isolation
- Learning Disability
- Low Back Pain
- Lumbar Spinal Stenosis
- Mad Cow Disease
- Meningitis
- Mental Illness
- Meralgia Paresthetica
- Migraine
- Mood Disorders
- Motion Sickness
- Multiple Sclerosis (MS)
- Munchausen Syndrome
- Myasthenia Gravis (MG)
- Myofascial Pain Syndrome (MPS)
- Narcissistic Personality Disorder (NPD)
- Nerve Damage
- Neuropathic Pain
- Obsessive Compulsive Disorder (OCD)
- Online Therapy
- Optic Neuritis
- PANDAS
- Panic Disorder
- Paralysis
- Parkinson's Disease
- Peripheral Nerve Injuries
- Peripheral Nerve Tumors
- Peripheral Neuropathy
- Persistent Depressive Disorder
- Pervasive Developmental Disorders (PDD)
- Phobias
- Pinched Nerve
- Polio
- Postpartum Depression (PPD)
- Posttraumatic Stress Disorder (PTSD)
- Premenstrual Dysphoric Disorder (PMDD)
- Progressive Neurological Disorders
- Pseudotumor Cerebri
- Psychotic Disorder
- Rape and Sexual Assault
- Relationship Issues
- Schizoaffective Disorder
- Schizophrenia
- Sciatica
- Seasonal Affective Disorder (SAD)
- Seizures
- Sleepwalking
- Speech Disorders
- Stiff Person Syndrome (SPS)
- Stress
- Stroke
- Tardive Dyskinesia
- Tension Headache
- Tics
- Tinnitus
- Tourette Syndrome
- Transient Ischemic Attack (TIA)
- Trauma
- Traumatic Brain Injury
- Tremor
- Trigeminal Neuralgia (TN)
- Vertigo
- Vestibular Testing
- Wernicke-Korsakoff Syndrome
- Wilson-Turner Syndrome
Procedures Performed by Dr. Walter A. Lajara-Nanson
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Walter A. Lajara-Nanson as in-network for the following 2026 plans.
Health plans
Blue Cross and Blue Shield of Montana
Network data as of Jun 7, 2026, as reported by the insurer.
Show all 19 plans from Blue Cross and Blue Shield of Montana
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Blue Focus Bronze POS℠ 205 (3 plan variants) | POS · Expanded Bronze | Blue Focus POS | Accepting new patients |
| Blue Focus Bronze POS℠ 705 (3 plan variants) | POS · Bronze | Blue Focus POS | Accepting new patients |
| Blue Focus Bronze POS℠ Standard (3 plan variants) | POS · Expanded Bronze | Blue Focus POS | Accepting new patients |
| Blue Focus Gold POS℠ 207 (3 plan variants) | POS · Gold | Blue Focus POS | Accepting new patients |
| Blue Focus Gold POS℠ 902 (3 plan variants) | POS · Gold | Blue Focus POS | Accepting new patients |
| Blue Focus Gold POS℠ Standard (3 plan variants) | POS · Gold | Blue Focus POS | Accepting new patients |
| Blue Focus Silver POS℠ 206 (3 plan variants) | POS · Silver | Blue Focus POS | Accepting new patients |
| Blue Focus Silver POS℠ 903 (3 plan variants) | POS · Silver | Blue Focus POS | Accepting new patients |
| Blue Focus Silver POS℠ Standard (3 plan variants) | POS · Silver | Blue Focus POS | Accepting new patients |
| Blue Preferred Bronze PPO℠ 201 (4 plan variants) | PPO · Expanded Bronze | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Bronze PPO℠ 202 (4 plan variants) | PPO · Expanded Bronze | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Bronze PPO℠ Standard (4 plan variants) | PPO · Expanded Bronze | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Gold PPO℠ 204 (4 plan variants) | PPO · Gold | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Gold PPO℠ 901 (4 plan variants) | PPO · Gold | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Gold PPO℠ Standard (4 plan variants) | PPO · Gold | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Security PPO℠ 200 (4 plan variants) | PPO · Catastrophic | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Silver PPO℠ 203 (4 plan variants) | PPO · Silver | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Silver PPO℠ 308 (4 plan variants) | PPO · Silver | Blue Preferred PPO | Accepting new patients |
| Blue Preferred Silver PPO℠ Standard (4 plan variants) | PPO · Silver | Blue Preferred PPO | Accepting new patients |
Mountain Health CO-OP
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 22 plans from Mountain Health CO-OP
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| PEAK PPO BRONZE | PPO · Expanded Bronze | Preferred | Accepting new patients |
| Peak PPO Bronze HDHP | PPO · Expanded Bronze | Preferred | Accepting new patients |
| PEAK PPO BRONZE HDHP | PPO · Expanded Bronze | Preferred | Accepting new patients |
| Peak PPO Bronze Standard | PPO · Expanded Bronze | Preferred | Accepting new patients |
| Peak PPO Catastrophic | PPO · Catastrophic | Preferred | Accepting new patients |
| Peak PPO Gold | PPO · Gold | Preferred | Accepting new patients |
| PEAK PPO GOLD | PPO · Gold | Preferred | Accepting new patients |
| PEAK PPO GOLD HDHP | PPO · Gold | Preferred | Accepting new patients |
| Peak PPO Gold Standard | PPO · Gold | Preferred | Accepting new patients |
| Peak PPO Silver | PPO · Silver | Preferred | Accepting new patients |
| PEAK PPO SILVER | PPO · Silver | Preferred | Accepting new patients |
| PEAK PPO SILVER HDHP | PPO · Silver | Preferred | Accepting new patients |
| Peak PPO Silver Standard | PPO · Silver | Preferred | Accepting new patients |
| Plus Bronze (2 plan variants) | PPO · Expanded Bronze | Tier Two | Accepting new patients |
| Plus Bronze HDHP | PPO · Expanded Bronze | Tier Two | Accepting new patients |
| Plus Bronze Standard | PPO · Expanded Bronze | Tier Two | Accepting new patients |
| Plus Gold (2 plan variants) | PPO · Gold | Tier Two | Accepting new patients |
| Plus Gold HDHP | PPO · Gold | Tier Two | Accepting new patients |
| Plus Gold Standard | PPO · Gold | Tier Two | Accepting new patients |
| Plus Silver | PPO · Silver | Tier Two | Accepting new patients |
| Plus Silver HDHP | PPO · Silver | Tier Two | Accepting new patients |
| Plus Silver Standard | PPO · Silver | Tier Two | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Walter A. Lajara-Nanson is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Walter A. Lajara-Nanson is enrolled to bill Medicare as a Practitioner - Neurology (also registered under: Practitioner - Psychiatry) .
Bills through: Acclaim Physician Group Inc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Studies
Graduated in 1991Additional Specialities
- Psychiatrist
Looking for more Neurologists?
There are 8 other neurologists in this region.
- Gender: Male
- Address: Suite 206 400 15th Avenue South Great Falls, 59405, MT
- Gender: Male
- Address: Suite 12 2800 11th Avenue South Great Falls, 59405, MT
- Gender: Male
- Address: 1401 25th Street South Great Falls, 59405, MT
- Gender: Female
- Address: 1401 25th Street South Great Falls, 59405, MT
- Gender: Male
- Address: 1401 25th Street South Great Falls, 59405, MT
- Gender: Male
- Address: 3000 15th Avenue South Great Falls, 59405, MT
- Gender: Male
- Address: Suite 206 400 15th Avenue South Great Falls, 59405, MT
- Gender: Male
- Address: 1400 29th Street South Great Falls, 59405, MT
Questions & Answers
Where can you meet with Dr. Walter A. Lajara-Nanson?
Dr. Walter A. Lajara-Nanson's office is located at 1401 25th Street South 3rd Floor in Great Falls, MT 59405.
Has Dr. Walter A. Lajara-Nanson affiliation with hospitals?
Dr. Walter A. Lajara-Nanson is affiliated with BENEFIS HOSPITALS INC. For the full list of hospitals see this list.
Does Dr. Walter A. Lajara-Nanson accept patients with Blue Cross and Blue Shield of Montana?
Yes, Dr. Walter A. Lajara-Nanson is listed in-network for Blue Cross and Blue Shield of Montana through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Does Dr. Walter A. Lajara-Nanson have affiliation with practices?
Dr. Walter A. Lajara-Nanson is affiliated with Siggins Memorial Clinic. For the full list of practices see this list.
What conditions does Dr. Walter A. Lajara-Nanson treat?
Dr. Walter A. Lajara-Nanson provides treatment for Antisocial Personality Disorder (ASPD), Hypersomnia, Neuropathic Pain, PANDAS, Peripheral Nerve Tumors, Progressive Neurological Disorders. For the full list see this list.