Rosemary Hallett, M.D.
NPI 1376527804 · Allergy & Immunology (Internal Medicine) Physician · Davis, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rosemary Hallett, M.D. is a Allergy & Immunology (Internal Medicine) Physician provider in Davis, CA (NPI 1376527804).
Provider details
- NPI number
- 1376527804
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- License
- A71662 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
396 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 102 | $188 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 59 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 51 | $96 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 43 | $174 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 36 | $224 |
| Test to Measure Expiratory Airflow and Volume |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 117 | 50 |
| Budesonide/Formoterol Fumaratebrand: Symbicort | 76 | 29 |
| Dupilumabbrand: Dupixent Pen | 71 | — |
| Budesonide/Formoterol Fumaratebrand: Budesonide-Formoterol Fumarate | 59 | 19 |
| Fluticasone Propionate | 58 | 25 |
| Budesonide/Formoterol Fumaratebrand: Breyna | 48 | 16 |
| Ipratropium Bromide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-29
- Last updated
- 2007-07-08
Frequently asked questions
- What is Rosemary Hallett's NPI number?
- Rosemary Hallett's National Provider Identifier (NPI) is 1376527804, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rosemary Hallett's specialty?
- Rosemary Hallett is listed in the NPPES registry with a primary specialty of Allergy & Immunology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Rosemary Hallett located?
- Rosemary Hallett's practice location on file with NPPES is 451 E. Health Sciences Dr, Davis, CA 95616-8660.
- What is Rosemary Hallett's phone number?
- The practice phone number listed in the NPPES registry for Rosemary Hallett is (530) 752-2884.
- Does Rosemary Hallett accept Medicare?
- Rosemary Hallett is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rosemary Hallett's NPI active?
- Yes — Rosemary Hallett's NPI (1376527804) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.