Dr. Gregory J. Nielsen
- Gender: Male
- Sole propriator: No
- NPI: 1578600318
Dr. Gregory J. Nielsen D.D.S.
Endodontist
He is located at 2225 Broadwater Avenue Suite A in Billings, MT 59102. Can help patients with the following: Bad Breath, Bleeding Gums, Cracked Tooth, Dental Implants, Laser, Teething. His National Provider Identifier (NPI) number is 1578600318. Appointment can be made via the phone number (702) 869-2800.
Conditions treated
Dr. Gregory James Nielsen, being an endodontist, 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. Gregory J. Nielsen.
- Abscessed Tooth
- Bad Breath
- Bleeding Gums
- Canker Sore
- Cavity
- Cosmetic Dentistry
- Cracked Tooth
- Dental Bridges
- Dental Crowns and Caps
- Dental Emergency
- Dental Exam and Cleaning
- Dental Fillings and Repairs
- Dental Implants
- Dental Malocclusion
- Dental Plaque
- Dental Sealant
- Dentin Hypersensitivity
- Dentures
- Edentulism
- Gum Disease / Gingivitis
- Invisalign
- Laser
- Loose Tooth
- Oral Cancer Examination
- Orthodontic Retainer
- Pericoronitis
- Root Canal
- Sensitive Teeth
- Smile Makeover
- Stained Teeth
- Teeth Grinding
- Teeth Whitening
- Teething
- Temporomandibular Joint Syndrome (TMJ)
- Tongue Problems
- Tooth Extraction
- Tooth Resorption
- Toothache
- Traumatic Dental Injury
- Veneers
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Gregory J. Nielsen as in-network for the following 2026 plans.
Dental plans
Blue Cross and Blue Shield of Montana
Network data as of Jun 19, 2026, as reported by the insurer.
Show all 6 plans from Blue Cross and Blue Shield of Montana
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| BlueCare Dental 4 Kids℠ 1A | PPO · High | Preferred | Accepting new patients |
| BlueCare Dental 4 Kids℠ 1B | PPO · Low | Preferred | Accepting new patients |
| BlueCare Dental℠ 1A | PPO · High | Preferred | Accepting new patients |
| BlueCare Dental℠ 1B | PPO · Low | Preferred | Accepting new patients |
| BlueCare Dental℠ 1C | PPO · Low | Preferred | Accepting new patients |
| BlueCare Dental℠ 1D | PPO · Low | Preferred | 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. Gregory J. Nielsen is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Payments received
Drug payment
| Tulsa Dental Products | $26 |
| Benco Dental Supply Co | $13 |
| Ivoclar Vivadent | $10 |
Other
| Food and Beverage | $51 |
Additional Specialities
- Dentist
Looking for more Endodontists?
Here are endodontists in Montana you may want to explore.
- Gender: Male
- Address: Suite A 2625 Saint Johns Avenue Billings, 59102, MT
- Gender: Female
- Address: Suite 3 2055 North 22nd Avenue Bozeman, 59718, MT
- Gender: Female
- Address: 1454 Dewey Boulevard Butte, 59701, MT
- Gender: Male
- Address: Suite 2 1601 Zimmerman Trail Billings, 59102, MT
- Gender: Male
- Address: 770 West Reserve Drive Kalispell, 59901, MT
- Gender: Male
- Address: Suite 106 690 North Meridian Road Kalispell, 59901, MT
- Gender: Female
- Address: Suite 15 80 Four Mile Drive Kalispell, 59901, MT
- Gender: Male
- Address: Suite 3 2055 North 22nd Avenue Bozeman, 59718, MT
- Gender: Male
- Address: Suite U-23 2675 Central Avenue Billings, 59102, MT
- Gender: Male
- Address: Suite P 619 Southwest Higgins Avenue Missoula, 59803, MT
Questions & Answers
What conditions does Dr. Gregory James Nielsen treat?
Dr. Gregory James Nielsen provides treatment for Bad Breath, Bleeding Gums, Cracked Tooth, Dental Implants, Laser, Teething. For the full list see this list.
Where can you meet with Dr. Gregory James Nielsen?
Dr. Gregory James Nielsen's office is located at 2225 Broadwater Avenue Suite A in Billings, MT 59102.
Does Dr. Gregory James Nielsen accept insurance?
Dr. Gregory James Nielsen is listed in-network for 6 ACA Marketplace (Obamacare/HealthCare.gov) plans from Blue Cross and Blue Shield of Montana. See the Marketplace plans section for details.