Clifford J. Berg, MD
Internal Medicine Physician · Waterbury, CT
Clifford J. Berg, MD is an internal medicine physician with a practice address in Waterbury, Connecticut, and NPI 1346560406, issued on Jun 10, 2010. Check the license (Connecticut 56402, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Clifford J. Berg
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 56402 CT
245061 CT
Self-reported in NPPES; status is on the state search - Practice location
- 56 Franklin St, Waterbury, CT 06706
- Phone
- (203) 709-6000
- Enumerated
- Jun 10, 2010
- Record last updated
- Oct 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170919001918); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 56 Franklin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Clifford J. Berg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 56402Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Trinity Health OF New England Provider Network Organization IncWaterbury, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clifford J. Berg among 2,623 internal medicine physician records in Connecticut
Clifford J. Berg, MD is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 62% of them.
- NPI issued2010 · 62% of these records are older, 36% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2010 · median 2004 among the 1,646 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
119 internal medicine physician records list a practice address in Waterbury
They are 119 of the 3,148 NPPES records with a practice address in Waterbury, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Waterbury → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Shawnette Alston, MDWaterbury, CT 067061568495604
- Sondra Bogursky, MDWaterbury, CT 067061790711059
- Ann Conti-Kelly, M.D.Waterbury, CT 067061730283110
- Leslie Coopersmith, MDWaterbury, CT 067061801844147
- Melisha CumberlandWaterbury, CT 067061073704813
- Samer Ein Alshaeba, M.D.Waterbury, CT 067061477591097
- Franco Galasso, MDWaterbury, CT 067061174573539
- Chalmers Hamill, MDWaterbury, CT 067061578589370
Common questions
What is Clifford J. Berg, MD's NPI number?
Clifford J. Berg, MD's National Provider Identifier (NPI) is 1346560406, issued on Jun 10, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Clifford J. Berg, MD located?
The NPPES record lists a practice address at 56 Franklin St, Waterbury, CT, 06706. Phone: (203) 709-6000. Providers update this record themselves, so call before visiting.
How can I verify Clifford J. Berg, MD's license?
NPPES lists Connecticut license number 56402, 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.
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.