Dr. Mark S. Sugar, M.D.
Allergy & Immunology (Allergy Physician)
- Medicare participating
At a glance
- Medical school
- University of Maryland School of Medicine (1969)
- Years since graduation
- 57
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 119
Licensed in California since 1970, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
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. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1969Medical school: University of Maryland School of Medicine
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
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
-
Allergy Physician primary
CA license C032628 (first issued 1970; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Medical groups
- Allergy and Asthma Associates of Southern Calif Inc (6 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 119
- Services billed
- 3,105
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Test for allergy using allergenic extract | 605 | 15 |
| Established patient office or other outpatient visit, 30-39 minutes | 154 | 89 |
| Test to measure expiratory airflow and volume | 68 | 46 |
| New patient office or other outpatient visit, 45-59 minutes | 31 | 31 |
| Test to measure the level of nitric oxide gas | 20 | 17 |
| Established patient office or other outpatient visit, 20-29 minutes | 17 | 12 |
| Test to measure expiratory airflow and volume changes before and after medication administration | 11 | 11 |
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 |
|---|---|
| Azelastine Hcl Other prescribers in Laguna Niguel, CA | 83 |
| Montelukast Sodium Other prescribers in Laguna Niguel, CA | 69 |
| Albuterol Sulfate Hfa (albuterol sulfate) Other prescribers in Laguna Niguel, CA | 67 |
| Fluticasone Propionate Other prescribers in Laguna Niguel, CA | 51 |
| Advair Hfa (fluticasone propion/salmeterol) Other prescribers in Laguna Niguel, CA | 51 |
| Spiriva Respimat (tiotropium bromide) Other prescribers in Laguna Niguel, CA | 40 |
| Azelastine-Fluticasone (azelastine/fluticasone) | 39 |
| Symbicort (budesonide/formoterol fumarate) Other prescribers in Laguna Niguel, CA | 30 |
| Fluticasone-Salmeterol (fluticasone propion/salmeterol) Other prescribers in Laguna Niguel, CA | 27 |
| Breyna (budesonide/formoterol fumarate) Other prescribers in Laguna Niguel, CA | 27 |
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, 13 companies reported 41 payments worth $854 in total to this clinician.
| Regeneron Healthcare Solutions, Inc. | $199 |
|---|---|
| Genzyme Corporation | $174 |
| GlaxoSmithKline, LLC. | $97.72 |
| Takeda Pharmaceuticals U.S.A., Inc. | $81.58 |
| Azurity Pharmaceuticals, Inc. | $67.75 |
| Novartis Pharmaceuticals Corporation | $48.88 |
| Ars Pharmaceuticals Operations, Inc. | $42.12 |
| Csl Behring | $36.69 |
| Food and Beverage | $854 |
|---|
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.