Clemens Bergwitz, MD
Endocrinology, Diabetes & Metabolism Physician · New Haven, CT
Clemens Bergwitz, MD is an endocrinology, diabetes & metabolism physician with a practice address in New Haven, Connecticut, and NPI 1518957067, issued on Oct 26, 2005. Check the license (Connecticut 52826, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Clemens Bergwitz
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 52826 CT
Self-reported in NPPES; status is on the state search - Practice location
- 35 Park St, New Haven, CT 06519
- Phone
- (203) 200-3636
- Enumerated
- Oct 26, 2005
- Record last updated
- Nov 25, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (203) 200-2159
- Medicare enrollment
- Enrolled (PECOS I20141104002613); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 35 Park St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Talita Acciari, APRNFamily Nurse Practitioner1275469777
- Jennifer Afranie-Sakyi, MDHematology & Oncology Physician1902369358
- Prasanna Ananth, MD, MPHPediatric Hematology & Oncology Physician1982865903
- Josephine Ankrah, PA-C, MPHPhysician Assistant1144968918
- Amanda AntonelliClinical Social Worker1932840105
- Mary Barden, MDNeurology Physician1568999480
Verify Clemens Bergwitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 52826Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,173 Medicare Part D claims for 229 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Alendronate Sodium413 claims
- Levothyroxine Sodium258 claims
- Risedronate Sodium57 claims
- Calcitriol43 claims
- Hydrochlorothiazide41 claims
- Synthroid40 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).
Industry payments in 2024: $6,396.31
12 payments; by number, the most common kind was food and beverage; the largest payer was Alexion Pharmaceuticals, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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
- Yale UniversityNew Haven, 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 Clemens Bergwitz, MD's NPI number?
Clemens Bergwitz, MD's National Provider Identifier (NPI) is 1518957067, issued on Oct 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Clemens Bergwitz, MD located?
The NPPES record lists a practice address at 35 Park St, New Haven, CT, 06519. Phone: (203) 200-3636. Providers update this record themselves, so call before visiting.
How can I verify Clemens Bergwitz, MD's license?
NPPES lists Connecticut license number 52826, 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 Clemens Bergwitz, MD prescribe under Medicare Part D?
In 2024, Clemens Bergwitz, MD had 1,173 Medicare Part D claims for 229 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Clemens Bergwitz, MD'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.