Katherine Alexis Bloom, M.D.
Allergy & Immunology Physician · Fairfield, CT
Katherine Alexis Bloom, M.D. is an allergy & immunology physician with a practice address in Fairfield, Connecticut, and NPI 1760697635, issued on May 13, 2007. Check the license (Connecticut 047707, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Katherine Alexis Bloom
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 047707 CT
Self-reported in NPPES; status is on the state search - Practice location
- 55 Walls Dr, Fairfield, CT 06824
- Phone
- (203) 259-7070
- Enumerated
- May 13, 2007
- Record last updated
- Dec 16, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (203) 254-7402
- Medicare enrollment
- Enrolled (PECOS I20090814000096); accepts Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 2003
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 57 in Connecticut → Look up another NPI →
Also registered at 55 Walls Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kenneth Backman, M.D.Allergy & Immunology Physician1174595847
- Christine Maier, OTR/LOccupational Therapist1356830970
- Michelle NittiSpeech-Language Pathologist1831759158
- Irena Veksler-Offengenden, M.D.Allergy & Immunology Physician1508807603
Verify Katherine Alexis Bloom in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 047707Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
291 Medicare Part D claims for 65 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Cutaquig36 claims
- Azelastine Hcl34 claims
- Montelukast Sodium24 claims
- Albuterol Sulfate Hfa22 claims
- Xolair17 claims
- Fluticasone Propionate16 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.
Industry payments in 2024: $290.68
14 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Allergy And Asthma Care OF Fairfield County LLCTrumbull, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Alexis Bloom among 57 allergy & immunology physician records in Connecticut
Katherine Alexis Bloom, M.D. is one of 57 allergy & immunology physician records with a practice address in Connecticut. 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 2007, is newer than 58% of them.
- NPI issued2007 · 58% of these records are older, 26% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2003 · median 2002 among the 35 with a school on file
- Record last updated2015 · 65% 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 Connecticut 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 Connecticut
There are 57 allergy & immunology physician records in Connecticut.
All 57 in Connecticut → Every provider in Fairfield → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Aimee Altschul-Latzman, M.D.Fairfield, CT 068241003855859
- Kenneth Backman, M.D.Fairfield, CT 068241174595847
- Sara Dever, MDFairfield, CT 068241992990535
- Irena Veksler-Offengenden, M.D.Fairfield, CT 068241508807603
- Denis Bouboulis, MDDarien, CT 068201619035417
- Gary Soffer, MDGreenwich, CT 068301477991867
- Jonathan Bell, M.D.Danbury, CT 068101770589665
- Yogen Dave, M.D.Danbury, CT 068101275791279
Common questions
What is Katherine Alexis Bloom, M.D.'s NPI number?
Katherine Alexis Bloom, M.D.'s National Provider Identifier (NPI) is 1760697635, issued on May 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Alexis Bloom, M.D. located?
The NPPES record lists a practice address at 55 Walls Dr, Fairfield, CT, 06824. Phone: (203) 259-7070. Providers update this record themselves, so call before visiting.
How can I verify Katherine Alexis Bloom, M.D.'s license?
NPPES lists Connecticut license number 047707, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Alexis Bloom, M.D. prescribe under Medicare Part D?
In 2024, Katherine Alexis Bloom, M.D. had 291 Medicare Part D claims for 65 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.