Madeleine Blair Chollet, M.D., PH.D.
Allergy & Immunology Physician · Dublin, CA
Madeleine Blair Chollet, M.D., PH.D. is an allergy & immunology physician with a practice address in Dublin, California, and NPI 1518351667, issued on Mar 26, 2015. Check the license (California A143868, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Madeleine Blair Chollet
- Credential
- M.D., PH.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- A143868 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4050 Dublin Blvd, Dublin, CA 94568
- Phone
- (510) 498-2350
- Enumerated
- Mar 26, 2015
- Record last updated
- May 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210526000769); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →
Also registered at 4050 Dublin Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mimi Akaba, FNPNurse Practitioner1851472021
- Sana Ali, D.O.Family Medicine Physician1396199550
- Samira Aliabadi, MDPediatrics Physician1508957887
- Elizabeth Ancheta, MDPediatrics Physician1801933775
- Amardeep Angroola, M.D.Hospitalist Physician1821253568
- Carla Antypas, DOFamily Medicine Physician1063096113
Verify Madeleine Blair Chollet in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A143868Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
92 Medicare Part D claims for 31 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Dupixent Pen19 claims
- Azelastine Hcl18 claims
- Ipratropium Bromide13 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
- Sutter Bay Medical FoundationSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Madeleine Blair Chollet among 444 allergy & immunology physician records in California
Madeleine Blair Chollet, M.D., PH.D. is one of 444 allergy & immunology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 85% of them.
- NPI issued2015 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2015 · median 2004 among the 281 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X 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 Physician providers in California
There are 444 allergy & immunology physician records in California.
All 444 in California → Every provider in Dublin → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Raymond Hong, M.D.Dublin, CA 945681881890200
- Paul Cheng, MDSan Leandro, CA 945771073619706
- Farinaz Farrahi, MDSan Leandro, CA 945781174661227
- Larry Posner, MDNapa, CA 945581548271216
- Kathleen Tajiri, MDNapa, CA 945581689624983
- Frank Orson, M.D.Lafayette, CA 945491982626131
- Ted Young, M.D.Pleasanton, CA 945881508910324
- E. N. Brigino-Buenaventura, MDVallejo, CA 945891730231531
Common questions
What is Madeleine Blair Chollet, M.D., PH.D.'s NPI number?
Madeleine Blair Chollet, M.D., PH.D.'s National Provider Identifier (NPI) is 1518351667, issued on Mar 26, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Madeleine Blair Chollet, M.D., PH.D. located?
The NPPES record lists a practice address at 4050 Dublin Blvd, Dublin, CA, 94568. Phone: (510) 498-2350. Providers update this record themselves, so call before visiting.
How can I verify Madeleine Blair Chollet, M.D., PH.D.'s license?
NPPES lists California license number A143868, 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 Madeleine Blair Chollet, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Madeleine Blair Chollet, M.D., PH.D. had 92 Medicare Part D claims for 31 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.