Dr. James W. Baker, MD
Allergy & Immunology (Allergy & Immunology Physician)
- Medicare participating
At a glance
- Medical school
- University of Wisconsin School of Medicine (1970)
- Years since graduation
- 56
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 203
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
- 1970Medical school: University of Wisconsin School of Medicine
- 2005Registered 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 & Immunology Physician primary
OR license MD08914 -
Allergy Physician
OR license MD08914 -
Specialist
OR license MD08914
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Medical groups
- James W Baker MD LLC (5 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
- 203
- Services billed
- 4,565
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Injection, omalizumab, 5 mg | 2,187 | 13 |
| Professional service for preparation and provision of 1 or more antigens | 1,207 | 39 |
| Test for allergy using allergenic extract | 451 | 26 |
| Professional service for multiple injections of allergen | 374 | 32 |
| Professional service for single injection of allergen | 280 | 27 |
| Established patient office or other outpatient visit, 20-29 minutes | 116 | 64 |
| Established patient office or other outpatient visit, 30-39 minutes | 101 | 82 |
| Injection of drug or substance under skin or into muscle | 70 | 17 |
| Test to measure the level of nitric oxide gas | 35 | 30 |
| New patient office or other outpatient visit, 45-59 minutes | 31 | 31 |
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 |
|---|---|
| Montelukast Sodium Other prescribers in Portland, OR | 156 |
| Arnuity Ellipta (fluticasone furoate) Other prescribers in Portland, OR | 105 |
| Azelastine Hcl Other prescribers in Portland, OR | 101 |
| Albuterol Sulfate Hfa (albuterol sulfate) Other prescribers in Portland, OR | 96 |
| Xolair (omalizumab) | 72 |
| Fluticasone-Salmeterol (fluticasone propion/salmeterol) Other prescribers in Portland, OR | 71 |
| Trelegy Ellipta (fluticasone/umeclidin/vilanter) Other prescribers in Portland, OR | 65 |
| Budesonide-Formoterol Fumarate (budesonide/formoterol fumarate) Other prescribers in Portland, OR | 46 |
| Breo Ellipta (fluticasone/vilanterol) Other prescribers in Portland, OR | 45 |
| Dupixent Syringe (dupilumab) Other prescribers in Portland, OR | 45 |
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 43 payments worth $1,250 in total to this clinician.
| Csl Behring | $348 |
|---|---|
| Genzyme Corporation | $238 |
| Galderma Laboratories, L.P. | $126 |
| Incyte Corporation | $96.00 |
| Regeneron Healthcare Solutions, Inc. | $93.91 |
| Takeda Pharmaceuticals U.S.A., Inc. | $87.28 |
| Genentech USA, Inc. | $67.40 |
| Biocryst US Sales Co., LLC | $46.57 |
| Food and Beverage | $1,250 |
|---|
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.