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Allergists who accept Medicare in Castle Rock, CO
CMS lists 4 clinicians in this specialty with a practice address in Castle Rock. Accept Medicare assignment (the Medicare-approved amount as full payment): 4. Offer telehealth: 1.
Typical amounts Medicare approves in ZIP 80104 (2024 Medicare rates, the latest CMS has published): a new-patient visit $133, of which you pay about $33; a follow-up visit $72, of which you pay about $18 — the 20% coinsurance after the yearly Part B deductible. Clinicians who don't accept assignment can charge up to 15% more; with a Medicare Advantage plan, your plan's copay applies instead.
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Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.
William W. Storms, MD
✓ Accepts Medicare assignmentMIPS score (2024): 15.5/100Graduated 1968 · University of Wisconsin School of MedicineMaleDrug and device company payments (2025): $5,481Dennard W. Ellison, MD
✓ Accepts Medicare assignmentGraduated 1986 · University of Florida College of MedicineMaleDrug and device company payments (2025): $216Rebin Kader, DO
✓ Accepts Medicare assignment✓ TelehealthGraduated 2017 · At Still Un of Hlth Sciences, Col of Osteo Med, MesaMaleDrug and device company payments (2025): $392Sterling N. Kosmach, DO
✓ Accepts Medicare assignmentGraduated 2014 · Midwestern University, Chicago College of Osteopathic MedFemaleDrug and device company payments (2025): $3,383
Before you book
This list comes from Medicare's enrollment records, not from reviews. Call the office to confirm the clinician is taking new Medicare patients. With Original Medicare, a clinician who accepts assignment can only charge you the Medicare deductible and coinsurance; one who doesn't may charge up to 15% more than the Medicare-approved amount. If you have a Medicare Advantage plan, check that the clinician is in the plan's network.
The MIPS final score (0–100) comes from Medicare's Merit-based Incentive Payment System for 2024. It combines quality measures, cost, improvement activities and use of certified health records, and it sets a payment adjustment. Clinicians who report as a group share the group's score. It is not a patient rating, and many clinicians have no published score.
Payments from drug and medical device companies come from CMS Open Payments (2025 general payments: meals, travel, consulting and speaking fees, gifts and similar), summed for each clinician. Receiving payments is legal and common and does not mean a clinician did anything wrong.
Other specialists in Castle Rock
- Primary care doctors190
- Nurse practitioners181
- Cardiologists55
- Dermatologists9
- Orthopedic surgeons29
- Neurologists24
- Gastroenterologists26
- Ophthalmologists4
- Optometrists19
- Podiatrists8
- Urologists21
- Pulmonologists9
- Nephrologists4
- Endocrinologists6
- Rheumatologists6
- ENT doctors13
- Oncologists13
- Psychiatrists10
- Psychologists6
- Therapists and counselors76
- Physical therapists69
- Occupational therapists15
- Speech therapists6
- Audiologists6
- Chiropractors10
- Gynecologists44
- General surgeons44
- Vascular surgeons10
- Physiatrists10
- Neurosurgeons11
- Infectious disease doctors3
Other care in Castle Rock
Hospitals · Nursing homes · Dialysis centers · Home health agencies · Hospices
Nearby cities
Enrollment, addresses and scores are as reported to CMS and can change. This is not a list of in-network providers for any Medicare Advantage plan, and it is not medical advice. Source: CMS Provider Data Catalog — Doctors and Clinicians National Downloadable File, Clinician MIPS Performance 2024 and Facility Affiliation Data (released Oct 2, 2026).