Catherine Ellen Berzolla, MD
Obstetrics & Gynecology Physician · Greenwich, CT
Catherine Ellen Berzolla, MD is an obstetrics & gynecology physician with a practice address in Greenwich, Connecticut, and NPI 1760698872, issued on May 15, 2007. Check the license (Connecticut 049818, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Catherine Ellen Berzolla
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 049818 CT
256580 NY
Self-reported in NPPES; status is on the state search - Practice location
- 644 W Putnam Ave, Greenwich, CT 06830
- Phone
- (203) 210-2880
- Enumerated
- May 15, 2007
- Record last updated
- Nov 1, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (203) 210-2881
- Medicare enrollment
- Enrolled (PECOS I20110805000475); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2006
- Entity
- Type 1 · individual
Also registered at 644 W Putnam Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sajid Afridi, PHARMACISTPharmacist1174972244
- Kaytan Amrute, M.D.Obstetrics & Gynecology Physician1619070836
- Julianne Biroschak, M.D.Obstetrics & Gynecology Physician1689800104
- Dzwinka Carroll, MDObstetrics & Gynecology Physician1841325248
- Lauren Carton, M.D.Pediatrics Physician1285719971
- Jane Chang, PHARM.D.Pharmacist1265884555
Verify Catherine Ellen Berzolla in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 049818Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
127 Medicare Part D claims for 54 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Estradiol39 claims
- Premarin16 claims
- Triamcinolone Acetonide14 claims
- Yuvafem11 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.
Bills Medicare through one group practice
- Westchester Medical Group, P.CDarien, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
13 obstetrics & gynecology physician records list a practice address in Greenwich
They are 13 of the 1,184 NPPES records with a practice address in Greenwich, and 707 obstetrics & gynecology physician records in Connecticut.
All 13 in Greenwich → All 707 in Connecticut → Every provider in Greenwich →
Other obstetrics & gynecology physician records in Connecticut
- Anne Abbate, MDBridgeport, CT1497323562
- Roxanne Abder, MDTrumbull, CT1790840809
- Patricia Abruna, M.D.Fairfield, CT1023246832
- Ami Acharya, M.D.Hamden, CT1437131760
- Marie Achong, M.D.Hartford, CT1700806213
- Elizabeth Ackley, M.D.New Haven, CT1316474091
- Sharon Adler, MDBristol, CT1235148438
- Chaarushi Ahuja, MDNew Haven, CT1851965347
- Sarp Aksel, M.D.Stamford, CT1245611441
- Roa Alammari, MDMansfield Center, CT1861782807
Common questions
What is Catherine Ellen Berzolla, MD's NPI number?
Catherine Ellen Berzolla, MD's National Provider Identifier (NPI) is 1760698872, issued on May 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Ellen Berzolla, MD located?
The NPPES record lists a practice address at 644 W Putnam Ave, Greenwich, CT, 06830. Phone: (203) 210-2880. Providers update this record themselves, so call before visiting.
How can I verify Catherine Ellen Berzolla, MD's license?
NPPES lists Connecticut license number 049818, 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 Catherine Ellen Berzolla, MD prescribe under Medicare Part D?
In 2024, Catherine Ellen Berzolla, MD had 127 Medicare Part D claims for 54 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
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.