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Edit this profileAt a glance
- 1400 29Th St S, Great Falls, MT 59405
About Dr. Mazur
John J. Mazur, M.D. practices pulmonary disease in Great Falls, MT. John is a 1986 graduate of University of Michigan Medical School. Medicare claims data shows John provided 1,957 services to 1,411 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, test to measure expiratory airflow and volume, and test to measure expiratory airflow and volume changes before and after medication administration. The provider's National Provider Identifier (NPI) is 1659364651.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (406) 454-2171
- Email not available
Practice Locations
1400 29TH ST S
Great Falls, MT 59405
Conditions Commonly Evaluated or Treated
Within Pulmonary Disease generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Airway disorders
Blood vessel disorders
Critical care
Diagnostic findings
Environmental lung diseases
Genetic conditions
Infections
- Community-acquired pneumonia
- Fungal lung infection
- Legionnaires' Disease
- Lung abscess
- NTM lung infection
- Severe Pneumonia
- Tuberculosis
- Valley fever
- Walking Pneumonia in Children
- Whooping Cough
Inflammatory conditions
Lung growths
Occupational & environmental
Pleural disorders
Post-infection conditions
Sleep disorders
- Excessive daytime sleepiness
- Shallow Breathing In Sleep
- Snoring
- Upper Airway Resistance Syndrome
- Waking Up Gasping Or Choking
Structural lung conditions
Symptoms
- Blue Baby Syndrome
- Chest congestion
- Coughing up blood
- Low oxygen levels
- Rapid Breathing
- Severe asthma attack
- Wheezing
Procedures & services
Most searched procedures
Airway care
Airway management
Biopsies
Biopsies & diagnostics
Breathing tests
- 6-minute walk test
- Asthma challenge test
- Cardiopulmonary Exercise Testing (CPET)
- Exhaled nitric oxide test
Cancer diagnostic procedures
Consultations
Counseling & prevention
Critical care
Diagnostic procedures
Drainage care
Imaging
Interventional procedures
Lab tests
Lung tests
Medications
Monitoring
Pleural procedures
- Chest tube insertion
- Draining lung fluid
- Medical thoracoscopy
- Permanent chest drain insertion
- Pleural sealing procedure
Procedures
Rehabilitation
Screening
Sleep equipment
Sleep medicine
Sleep treatments
Specialist evaluations
Specialized testing
Treatments
Procedures Most Often Billed to Medicare
1,957 services · 1,411 patients · 19 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of lobe of lung using an endoscope, 1 lobe | Procedure | 31628 |
14 | Less often than most peers in Pulmonary Disease |
| Irrigation and suction of lung airways to obtain cells using an endoscope | Procedure | 31624 |
12 | Less often than most peers in Pulmonary Disease |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
367 | More than most peers in Pulmonary Disease |
| Test to measure expiratory airflow and volume changes before and after medication administration | Treatment | 94060 |
231 | More than most peers in Pulmonary Disease |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
75 | More than most peers in Pulmonary Disease |
| Test to examine how well the lungs exchange gases | Treatment | 94729 |
65 | As often as other peers in Pulmonary Disease |
| Test to determine lung volumes using sensors | Treatment | 94726 |
65 | As often as other peers in Pulmonary Disease |
| Test for exercise-induced lung stress | Treatment | 94618 |
56 | More often than most peers in Pulmonary Disease |
| Test to measure the level of nitric oxide gas | Treatment | 95012 |
41 | As often as other peers in Pulmonary Disease |
| Influenza vaccine, trivalent derived from recombinant dna | Treatment | 90673 |
27 | Too few peers to compare |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other lung specialists in Great Falls 8
Same specialty, same city.
Trained at University of Michigan Medical School 8
Other providers in the same specialty who trained at the same institution.
More connections — 10 related providers in 2 groups
Class of 1986 at University of Michigan Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of lobe of lung using an endoscope, 1 lobe 2
Providers in MT who bill this service to Medicare most often.
Common questions
What does John J. Mazur specialize in?
John J. Mazur is a lung specialist in Great Falls, MT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pulmonary Disease”.
NPI registry
Where is John J. Mazur located?
John J. Mazur is listed at 1400 29Th St S, Great Falls, MT 59405. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is John J. Mazur's phone number?
The number on file is (406) 454-2171. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for John J. Mazur?
John J. Mazur's National Provider Identifier is 1659364651. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did John J. Mazur train?
John J. Mazur attended University of Michigan Medical School, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John J. Mazur have?
John J. Mazur has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What does John J. Mazur do most often?
According to Medicare billing data, John J. Mazur performs procedures including biopsy of lobe of lung using an endoscope, 1 lobe and irrigation and suction of lung airways to obtain cells using an endoscope; provides treatments such as test to measure expiratory airflow and volume and test to measure expiratory airflow and volume changes before and after medication administration, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is John J. Mazur's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John J. Mazur. If this is you, claiming it is free.
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