Lydia McGuigan, D.O.
Endocrinology, Diabetes & Metabolism Physician · Danbury, CT
Lydia McGuigan, D.O. is an endocrinology, diabetes & metabolism physician with a practice address in Danbury, Connecticut, and NPI 1326334517, issued on Jun 25, 2011. Check the license (Connecticut 79572, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Lydia McGuigan
- Credential
- D.O.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 79572 CT
25MB09911600 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 25 Germantown RD FL 1, Danbury, CT 06810
- Phone
- (203) 794-5620
- Enumerated
- Jun 25, 2011
- Record last updated
- Oct 28, 2024
- Medicare enrollment
- Enrolled (PECOS I20241213000403); accepts Medicare assignment
- Medical or professional school
- Kansas City University Of Med & Biosciences, College Of Osteo Med, 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Verify Lydia McGuigan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 79572Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
3,693 Medicare Part D claims for 410 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Levothyroxine Sodium388 claims
- Ozempic322 claims
- Metformin Hcl254 claims
- Atorvastatin Calcium210 claims
- Jardiance170 claims
- Lantus Solostar145 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): 75.8 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
- 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).
Endocrinology, Diabetes & Metabolism Physician providers in Connecticut
There are 214 endocrinology, diabetes & metabolism physician records in Connecticut.
Other endocrinology, diabetes & metabolism physician records in Connecticut
- Hassaan Bin Aftab, M.D.Farmington, CT1477007839
- Umar Ahmad, D.O.Danbury, CT1336589746
- Fadi Al-Khayer, MDStorrs, CT1861477069
- Vivek Alaigh, MDStamford, CT1740675818
- Kenda Alkwatli, MDWethersfield, CT1063075901
- Ipek Alpertunga, MDHartford, CT1386166452
- Helen Anaedo, M.DPlainville, CT1164717021
- Anika Anam, M.D.New Haven, CT1376885905
- Muhammad Ansar, MDFarmington, CT1285918557
- Neelum AnwaarNorwalk, CT1336670041
Common questions
What is Lydia McGuigan, D.O.'s NPI number?
Lydia McGuigan, D.O.'s National Provider Identifier (NPI) is 1326334517, issued on Jun 25, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Lydia McGuigan, D.O. located?
The NPPES record lists a practice address at 25 Germantown RD FL 1, Danbury, CT, 06810. Phone: (203) 794-5620. Providers update this record themselves, so call before visiting.
How can I verify Lydia McGuigan, D.O.'s license?
NPPES lists Connecticut license number 79572, 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 Lydia McGuigan, D.O. prescribe under Medicare Part D?
In 2024, Lydia McGuigan, D.O. had 3,693 Medicare Part D claims for 410 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Lydia McGuigan, D.O.'s MIPS final score?
The 2023 MIPS final score is 75.8 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.