Dr. Karan Singh, MD
Pulmonology (Pulmonary Disease Physician)
500 W Thomas Rd Ste 500
Phoenix, AZ 85013
Who else practices at this address →
Maricopa County includes primary care (13% of residents) and dental (0% of residents) and mental health (4% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- In the NPI registry since
- 2012
- Medicare patients seen, 2024
- 654
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2012Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Pulmonary Disease Physician primary
AZ license 80382 · KY license 50775 -
Critical Care Medicine (Internal Medicine) Physician
AZ license 80382
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Medicare patients and services
- Medicare patients, 2024
- 654
- Services billed
- 3,968
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 424 | 221 |
| Critical care, first 30-74 minutes | 319 | 148 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 239 | 136 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 138 | 55 |
| Test to examine how well the lungs exchange gases | 133 | 128 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 88 | 86 |
| Test to measure expiratory airflow and volume changes before and after medication administration | 78 | 75 |
| New patient office or other outpatient visit, 45-59 minutes | 74 | 74 |
| Test to determine lung volumes using gas dilution or washout | 71 | 70 |
| Established patient office or other outpatient visit, 20-29 minutes | 66 | 64 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Trelegy Ellipta (fluticasone/umeclidin/vilanter) Other prescribers in Phoenix, AZ | 311 |
| Albuterol Sulfate Hfa (albuterol sulfate) Other prescribers in Phoenix, AZ | 297 |
| Azithromycin Other prescribers in Phoenix, AZ | 188 |
| Prednisone Other prescribers in Phoenix, AZ | 147 |
| Spiriva Respimat (tiotropium bromide) Other prescribers in Phoenix, AZ | 119 |
| Montelukast Sodium Other prescribers in Phoenix, AZ | 106 |
| Stiolto Respimat (tiotropium br/olodaterol hcl) Other prescribers in Phoenix, AZ | 104 |
| Breztri Aerosphere (budesonide/glycopyr/formoterol) Other prescribers in Phoenix, AZ | 86 |
| Fluticasone-Salmeterol (fluticasone propion/salmeterol) Other prescribers in Phoenix, AZ | 80 |
| Anoro Ellipta (umeclidinium brm/vilanterol tr) Other prescribers in Phoenix, AZ | 77 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 12 companies reported 46 payments worth $1,042 in total to this clinician.
| Noah Medical Corporation | $478 |
|---|---|
| GlaxoSmithKline, LLC. | $232 |
| Olympus America Inc. | $66.97 |
| AstraZeneca Pharmaceuticals LP | $61.02 |
| Grifols USA, LLC | $45.97 |
| Actelion Pharmaceuticals US, Inc. | $33.10 |
| Takeda Pharmaceuticals U.S.A., Inc. | $24.63 |
| Electromed, Inc. | $21.94 |
| Food and Beverage | $1,042 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.