State Specialty Directory
Allergy & Immunology (Internal Medicine) Physician in CA
Federal CMS data for 15 allergy & immunology (internal medicine) physician providers across CA. Includes Medicare utilization, Open Payments industry funding, and PECOS enrollment status.
15
Providers
Median industry payments
$10,131
15
Allergy & Immunology (Internal Medicine) Physician Providers
in CA
$10,131
Median Industry Payments
per provider (2018–2024)
4,379
Median Medicare Services
fee-for-service claims
How to read this directory: Providers are listed by Medicare service volume, which reflects only
Medicare fee-for-service patients (typically 65+). This does not represent total practice volume.
Industry payments span multiple years and payment types — they are legal and do not indicate wrongdoing.
Allergy & Immunology (Internal Medicine) Physician includes multiple subspecialties with different practice patterns.
Learn more →
Allergy & Immunology (Internal Medicine) Physician Providers — CA
NPPES · Open Payments · Medicare| Provider | City | Medicare Volume | Beneficiaries* | Top Procedure | Industry Payments | Payment Type | Coverage |
|---|---|---|---|---|---|---|---|
| ENGLER, ANDREW MD | San Mateo | 40,462 | 1,222 | Allergy skin test | $460 (2018-2024) | Food & Beverage (97%) | Very High |
| ISHAAYA, ABRAHAM M.D. | Los Angeles | 39,929 | 16,430 | Allergy skin test | $23,494 (2018-2024) | Food & Beverage (93%) | Very High |
| AHN, SAM M.D. | Napa | 26,096 | 1,587 | Omalizumab injection (Xolair) for asthma/allergy | $22,313 (2018-2024) | Food & Beverage (50%) | Very High |
| JUNAID, IMRAN M.D. | Concord | 25,885 | 1,597 | Injection, mepolizumab, 1 mg | $33,285 (2018-2024) | Consulting (57%) | Very High |
| LIAO, OTTO M.D. | Tustin | 10,976 | 520 | Allergy immunotherapy preparation | $16,494 (2018-2024) | Food & Beverage (84%) | Very High |
| BASEN, TYLER M.D. | Mission Viejo | 10,404 | 745 | Allergy skin test | $147,878 (2018-2024) | Consulting (91%) | Very High |
| LIPSON, BRIAN M.D. | Rewood City | 5,070 | 185 | Allergy skin test | $933 (2018-2024) | Food & Beverage (82%) | Very High |
| KUHN, GILBERT M.D. | Santa Monica | 4,379 | 2,603 | Hospital follow-up visit, moderate complexity | $10,131 (2018-2024) | Gift (61%) | Very High |
| WALFORD, HANNAH MD | Menlo Park | 4,306 | 252 | Omalizumab injection (Xolair) for asthma/allergy | $325 (2019-2023) | Food & Beverage (87%) | Very High |
| CHU, THEODORE M.D. | San Jose | 3,283 | 330 | Allergy immunotherapy preparation | $7,716 (2018-2024) | Food & Beverage (100%) | Very High |
| PRESSER BELKIN, LIZA M.D. | Santa Barbara | 1,927 | 327 | Allergy skin test | $4,339 (2018-2024) | Food & Beverage (98%) | Very High |
| ANDERSON, LORRAINE MD | Santa Monica | 1,824 | 274 | Allergy skin test | $39,287 (2018-2024) | Consulting (86%) | Very High |
| TSAO, LULU | San Francisco | 1,341 | 168 | Allergy skin test | $10,381 (2019-2024) | Education (97%) | Very High |
| ZHU, LINDA MD | Stanford | 1,112 | 242 | Allergy skin test | $35 (2019-2019) | Food & Beverage (100%) | Very High |
| HALLETT, ROSEMARY M.D. | Davis | 515 | 390 | Allergen injection administration | $241 (2018-2021) | Food & Beverage (85%) | Very High |
Note: Allergy & Immunology (Internal Medicine) Physician encompasses multiple subspecialties with different practice patterns.
Differences in payment amounts and procedure volumes may reflect subspecialty focus
rather than practice quality. Consider viewing individual profiles for full context.