Rosemary Hallett, M.D.
Allergy & Immunology (Internal Medicine) Physician · Davis, CA
Rosemary Hallett, M.D. is an allergy & immunology (internal medicine) physician with a practice address in Davis, California, and NPI 1376527804, issued on Nov 29, 2005. Check the license (California A71662, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rosemary Hallett
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology (Internal Medicine) Physician 207RA0201X
- License number
- A71662 CA
Self-reported in NPPES; status is on the state search - Practice location
- 451 E. Health Sciences Dr, Davis, CA 95616
- Phone
- (530) 752-2884
- Enumerated
- Nov 29, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (530) 754-6047
- Medicare enrollment
- Enrolled (PECOS I20100416000682); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology (internal medicine) physician records → All 81 in California → Look up another NPI →
Verify Rosemary Hallett in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A71662Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% more Medicare Part D claims than the average allergy & immunology (internal medicine) physician in 2024
844 Medicare Part D claims for 165 beneficiaries, against an average of 789 among the 429 providers of this specialty who prescribed in Part D. Brand-name drugs were 49% of claims.
Most prescribed
- Azelastine Hcl117 claims
- Symbicort76 claims
- Dupixent Pen71 claims
- Budesonide-Formoterol Fumarate59 claims
- Fluticasone Propionate58 claims
- Breyna48 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Regents OF The University OF CaliforniaRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rosemary Hallett among 81 allergy & immunology (internal medicine) physician records in California
Rosemary Hallett, M.D. is one of 81 allergy & immunology (internal medicine) physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1995 · median 2010 among the 46 with a school on file
- Record last updated2026 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0201X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology (Internal Medicine) Physician providers in California
There are 81 allergy & immunology (internal medicine) physician records in California.
All 81 in California → Every provider in Davis → Allergy & Immunology (Internal Medicine) Physician nationwide →
The 8 allergy & immunology (internal medicine) physician records with the nearest ZIP codes
- Aminaa SiddiqiDavis, CA 956161619363314
- Suzanne Teuber, M.D.Davis, CA 956161619950516
- Bruce Ryhal, MDRoseville, CA 956781902812795
- Jay Keystone, M.D.Vacaville, CA 956881306115001
- Fatima Ali, MDSacramento, CA 958171093045023
- Anna CherianSacramento, CA 958171215672738
- Stephen Nagy, MDSacramento, CA 958191013929967
- Christine LicataSacramento, CA 958251437619533
Common questions
What is Rosemary Hallett, M.D.'s NPI number?
Rosemary Hallett, M.D.'s National Provider Identifier (NPI) is 1376527804, issued on Nov 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Rosemary Hallett, M.D. located?
The NPPES record lists a practice address at 451 E. Health Sciences Dr, Davis, CA, 95616. Phone: (530) 752-2884. Providers update this record themselves, so call before visiting.
How can I verify Rosemary Hallett, M.D.'s license?
NPPES lists California license number A71662, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Rosemary Hallett, M.D. prescribe under Medicare Part D?
In 2024, Rosemary Hallett, M.D. had 844 Medicare Part D claims for 165 beneficiaries; the average among allergy & immunology (internal medicine) physician prescribers was 789. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.