Cerrah Lynn Mendelsohn-Elzam, M.D.
Internal Medicine Physician · Greenwich, CT
Cerrah Lynn Mendelsohn-Elzam, M.D. is an internal medicine physician with a practice address in Greenwich, Connecticut, and NPI 1568679736, issued on May 17, 2007. Check the license (Connecticut 45295, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Cerrah Lynn Mendelsohn-Elzam
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 45295 CT
045295 CT
Self-reported in NPPES; status is on the state search - Practice location
- 7 Riversville RD Ste 1, Greenwich, CT 06831
- Phone
- (203) 531-1808
- Enumerated
- May 17, 2007
- Record last updated
- Mar 30, 2022
- Fax
- (203) 531-8326
- Medicare enrollment
- Enrolled (PECOS I20070720000405); may accept Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 7 Riversville RD Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erika Krauss, D.O.Internal Medicine Physician1437239621
- Jeffrey Puglisi, MDInternal Medicine Physician1376539213
Verify Cerrah Lynn Mendelsohn-Elzam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 45295Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,690 Medicare Part D claims for 185 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium126 claims
- Rosuvastatin Calcium93 claims
- Zolpidem Tartrate83 claims
- Amlodipine Besylate64 claims
- Levothyroxine Sodium59 claims
- Ezetimibe54 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): 70.2 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: $211.89
8 payments; by number, the most common kind was food and beverage; the largest payer was Exact Sciences Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Glenville Medical Associates P.CGreenwich, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cerrah Lynn Mendelsohn-Elzam among 2,623 internal medicine physician records in Connecticut
Cerrah Lynn Mendelsohn-Elzam, M.D. 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 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 44% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2003 · median 2004 among the 1,646 with a school on file
- Record last updated2022 · 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).
54 internal medicine physician records list a practice address in Greenwich
They are 54 of the 1,184 NPPES records with a practice address in Greenwich, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Greenwich → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sarah Gamble, DOGreenwich, CT 068311265649073
- Odysseas Kostas, M.D.Greenwich, CT 068311730250655
- Erika Krauss, D.O.Greenwich, CT 068311437239621
- Steven Mickley, MDGreenwich, CT 068311376539205
- Diane Mickley, MDGreenwich, CT 068311164574778
- Jeffrey Puglisi, MDGreenwich, CT 068311376539213
- Danielle Ramsden, M.D.Greenwich, CT 068311952562282
- Judith Shea, MDGreenwich, CT 068311710974530
Common questions
What is Cerrah Lynn Mendelsohn-Elzam, M.D.'s NPI number?
Cerrah Lynn Mendelsohn-Elzam, M.D.'s National Provider Identifier (NPI) is 1568679736, issued on May 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Cerrah Lynn Mendelsohn-Elzam, M.D. located?
The NPPES record lists a practice address at 7 Riversville RD Ste 1, Greenwich, CT, 06831. Phone: (203) 531-1808. Providers update this record themselves, so call before visiting.
How can I verify Cerrah Lynn Mendelsohn-Elzam, M.D.'s license?
NPPES lists Connecticut license number 45295, 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 Cerrah Lynn Mendelsohn-Elzam, M.D. prescribe under Medicare Part D?
In 2024, Cerrah Lynn Mendelsohn-Elzam, M.D. had 1,690 Medicare Part D claims for 185 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Cerrah Lynn Mendelsohn-Elzam, M.D.'s MIPS final score?
The 2023 MIPS final score is 70.2 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.