Quick answers
- Does Rachel L. Schreiber accept Medicare assignment?
- Yes. Medicare's clinician data says Rachel L. Schreiber accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Rachel L. Schreiber see?
- In 2024, CMS data shows 212 Original Medicare patients and 4,791 services for Rachel L. Schreiber. This counts Original Medicare only and measures volume, not quality.
- What is Rachel L. Schreiber's NPI number?
- 1326191198. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Rachel L. Schreiber, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 212 |
|---|---|
| Services billed to Medicare | 4,791 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Professional service for preparation and provision of 1 or more antigens (95165)1,460 services
- Test for allergy using allergenic extract (95004)1,292 services
- Test for allergy using skin patch (95044)667 services
- Professional service for multiple injections of allergen (95117)542 services
- Professional service for single injection of allergen (95115)223 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure63%
- Arthritis52%
- Asthma36%
- Osteoporosis31%
- Ischemic heart disease25%
Practice locations
Addresses where Rachel L. Schreiber is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Main St, PO Box 124Millsboro, DE 20850
- 9601 Blackwell Rd, Suite 350Rockville, MD 20850 (301) 545‑5512
Group practices
Medicare enrollment lists Rachel L. Schreiber as a member of this group (CMS data updated October 2, 2026).
- Schreiber Allergy5 clinicians in the group
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in Delaware
Clinicians with the same Medicare primary specialty in Delaware — not a recommendation.
Other clinicians in Schreiber Allergy
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Maryland School Of Medicine |
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1326191198 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians