Doctor profile · Federal record
Dr. Michael Gruber, MD
Critical Care Medicine (Internal Medicine) Physician (CMS: Pulmonary Disease) · Critical Care Medicine (Internal Medicine) Physician · Pulmonary Disease Physician · Pulmonary Disease Physician · Bozeman, MT
- NPI 1578671699
- Accepts Medicare
- MIPS 74.2 / 100 · 2023
- 28 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
915 Highland Blvd
Bozeman, MT 597156902
(406) 414-5000 - Additional location
-
7100 E Belleview Ave Ste G10
Greenwood Village, CO 801111634
(303) 745-0000
fax (303) 773-3675 - Mailing address
-
7100 E Belleview Ave Ste G10
Greenwood Village, CO 801111634
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- November 6, 2025
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207RC0200X — NUCC code
- State licenses (2)
- Montana #159933 · Colorado #40529
- Medicaid
- CO #37132547
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1578671699. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
544
Distinct HCPCS
9
Medicare allowed
$82,043
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99291 |
Critical care, first 30-74 minutes | 220 | 102 | $209 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 114 | 76 | $117 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 109 | 65 | $128 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 32 | 22 | $79 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 15 | 14 | $181 | |
94726 |
Test to determine lung volumes using sensors | 14 | 14 | $56 | |
94729 |
Test to examine how well the lungs exchange gases | 14 | 14 | $59 | |
99292 |
Critical care, each additional 30 minutes | 14 | 12 | $106 | |
94060 |
Test to measure expiratory airflow and volume changes before and after medication administration | 12 | 12 | $40 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 58. This provider delivers 9.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
199
Patients
28
Total drug cost
$98,589
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 57 | 28 | $2,198 |
| Symbicort (Budesonide/Formoterol Fumarate) | Brand | 41 | 0 | $24,830 |
| Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) | Brand | 28 | 0 | $43,794 |
| Spiriva Respimat (Tiotropium Bromide) | Brand | 18 | 0 | $12,014 |
| Fluticasone-Salmeterol (Fluticasone Propion/Salmeterol) | Brand | 16 | 0 | $3,664 |
| Anoro Ellipta (Umeclidinium Brm/Vilanterol Tr) | Brand | 14 | 0 | $10,947 |
| Ventolin Hfa (Albuterol Sulfate) | Brand | 14 | 0 | $986 |
| Montelukast Sodium | Generic | 11 | 0 | $156 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Gruber's medical specialty?
Dr. Michael Gruber practices Critical Care Medicine (Internal Medicine) Physician in Bozeman, MT.
Where does Dr. Michael Gruber practice?
Dr. Michael Gruber practices at 915 Highland Blvd, Bozeman, MT 597156902. Office phone: 4064145000.
What is Dr. Michael Gruber's NPI?
Dr. Michael Gruber's National Provider Identifier (NPI) is 1578671699, issued by NPPES.
Does Dr. Michael Gruber accept Medicare assignment?
Yes. Dr. Michael Gruber accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Gruber commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.