John Kuster, M.D.
Allergy & Immunology Physician · North Haven, CT
John Kuster, M.D. is an allergy & immunology physician with a practice address in North Haven, Connecticut, and NPI 1952834087, issued on Apr 5, 2017. Check the license (Connecticut 66689, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Kuster
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 66689 CT
Self-reported in NPPES; status is on the state search - Practice location
- 6 Devine St FL 2, North Haven, CT 06473
- Phone
- (203) 287-6200
- Enumerated
- Apr 5, 2017
- Record last updated
- May 16, 2022
- Medicare enrollment
- Enrolled (PECOS I20220801001998); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 57 in Connecticut → Look up another NPI →
Also registered at 6 Devine St FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marat Kribis, M.D.Student in an Organized Health Care Education/Training Program1609250547
- Katelyn Wong, MDPediatrics Physician1205491990
- Oana Elena ZahaRheumatology Physician1811201494
Verify John Kuster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 66689Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
322 Medicare Part D claims for 80 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Levocetirizine Dihydrochloride66 claims
- Fluticasone Propionate49 claims
- Azelastine Hcl40 claims
- Ipratropium Bromide31 claims
- Azelastine-Fluticasone28 claims
- Dupixent Pen25 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Yale UniversityNorth Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Kuster among 57 allergy & immunology physician records in Connecticut
John Kuster, 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 2017, is newer than 98% of them.
- NPI issued2017 · 98% of these records are older, 0% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2017 · median 2002 among the 35 with a school on file
- Record last updated2022 · 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 North Haven → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Jason Kwah, M.D.North Haven, CT 064731619255411
- Mario Rodenas, MDNorth Haven, CT 064731871709063
- Junghee Shin, M.D.,PH.DNorth Haven, CT 064731255743217
- Anita Kohli-Pamnani, M.D.Orange, CT 064771598721391
- Birur Chandra, MDMilford, CT 064601366484123
- Julie Flom, M.D.New Haven, CT 065041548654882
- Elise Liu, M.D.New Haven, CT 065101447661061
- Ryan Steele, DONew Haven, CT 065111427317130
Common questions
What is John Kuster, M.D.'s NPI number?
John Kuster, M.D.'s National Provider Identifier (NPI) is 1952834087, issued on Apr 5, 2017. An NPI identifies a provider in billing; it is not a license.
Where is John Kuster, M.D. located?
The NPPES record lists a practice address at 6 Devine St FL 2, North Haven, CT, 06473. Phone: (203) 287-6200. Providers update this record themselves, so call before visiting.
How can I verify John Kuster, M.D.'s license?
NPPES lists Connecticut license number 66689, 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 John Kuster, M.D. prescribe under Medicare Part D?
In 2024, John Kuster, M.D. had 322 Medicare Part D claims for 80 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is John Kuster, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.