Ian D. Weir, D.O.
Pulmonary Disease Physician · Norwalk, CT
Ian D. Weir, D.O. is a pulmonary disease physician with a practice address in Norwalk, Connecticut, and NPI 1548368293, issued on Sep 20, 2006. Check the license (Connecticut 044675, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Ian D. Weir
- Credential
- D.O.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- 044675 CT
Self-reported in NPPES; status is on the state search - Practice location
- 24 Stevens St, Norwalk, CT 06850
- Phone
- (203) 852-2375
- Enumerated
- Sep 20, 2006
- Record last updated
- May 1, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20061220000507); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 280 in Connecticut → Look up another NPI →
Also registered at 24 Stevens St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Janet Andrews, M.D.Emergency Medicine Physician1558385773
- Steven AreccoPharmacist1952430969
- Deborah August, M.D.Anatomic Pathology & Clinical Pathology Physician1801871504
- James Babashak, MDAnesthesiology Physician1932102803
- Paul Beiles, MDAnesthesiology Physician1043213978
- James Belisle, MDNeonatal-Perinatal Medicine Physician1679543136
Verify Ian D. Weir in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 044675Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
308 Medicare Part D claims for 67 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 60% of claims.
Most prescribed
- Anoro Ellipta64 claims
- Albuterol Sulfate Hfa47 claims
- Trelegy Ellipta43 claims
- Zolpidem Tartrate24 claims
- Stiolto Respimat19 claims
- Modafinil14 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 MIPS final score for 2023 (Medicare payment program): 94.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $404.91
11 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 8,806 providers of this specialty with any payment received $5,159.88 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
- Nuvance Health Medical Practice CT IncDanbury, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian D. Weir among 280 pulmonary disease physician records in Connecticut
Ian D. Weir, D.O. is one of 280 pulmonary disease physician records with a practice address in Connecticut. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 21% of them.
- NPI issued2006 · 21% of these records are older, 51% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2002 · median 2003 among the 210 with a school on file
- Record last updated2014 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Connecticut
There are 280 pulmonary disease physician records in Connecticut.
All 280 in Connecticut → Every provider in Norwalk → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Hira Bakhtiar, MDNorwalk, CT 068501588076707
- Lewis Berman, M.D.Norwalk, CT 068501699745182
- Zubin Bham, M.D.Norwalk, CT 068501407230477
- Jonathan Fine, MDNorwalk, CT 068501326019340
- Caroline Kurtz, MDNorwalk, CT 068501720172836
- Ming-Ming Lee, M.D.Norwalk, CT 068501467899799
- Christopher Manfredi, DONorwalk, CT 068501104910215
- Donald McNicol, MDNorwalk, CT 068501912920034
Common questions
What is Ian D. Weir, D.O.'s NPI number?
Ian D. Weir, D.O.'s National Provider Identifier (NPI) is 1548368293, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ian D. Weir, D.O. located?
The NPPES record lists a practice address at 24 Stevens St, Norwalk, CT, 06850. Phone: (203) 852-2375. Providers update this record themselves, so call before visiting.
How can I verify Ian D. Weir, D.O.'s license?
NPPES lists Connecticut license number 044675, 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 Ian D. Weir, D.O. prescribe under Medicare Part D?
In 2024, Ian D. Weir, D.O. had 308 Medicare Part D claims for 67 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
What is Ian D. Weir, D.O.'s MIPS final score?
The 2023 MIPS final score is 94.2 of 100. 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.