Mark Lewis Wasserman, MD
Internal Medicine Physician · New Haven, CT
Mark Lewis Wasserman, MD is an internal medicine physician with a practice address in New Haven, Connecticut, and NPI 1487680625, issued on Jun 22, 2006. Check the license (Connecticut 036223, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Mark Lewis Wasserman
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036223 CT
Self-reported in NPPES; status is on the state search - Practice location
- 400 Columbus Ave, New Haven, CT 06519
- Phone
- (203) 503-3250
- Enumerated
- Jun 22, 2006
- Record last updated
- Dec 16, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (203) 503-3254
- Medicaid ID
- 004235900 CT
- Medicare enrollment
- Enrolled (PECOS I20090910000334); accepts Medicare assignment
- Medical or professional school
- Rutgers New Jersey Medical School, 1992
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 400 Columbus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mini AbrahamPharmacist1326497405
- Lissette Agosto, MSWSocial Worker1912257221
- Maysa AkbarPsychologist1720056864
- Sarah Ardito, LCSWClinical Social Worker1548610827
- Jenifer Baldwin, LCSWCounselor1508168691
- Nicole Beall, LPCProfessional Counselor1043615818
Verify Mark Lewis Wasserman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 036223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
230 Medicare Part D claims for 154 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass34 claims
- Fluticasone Propionate21 claims
- Prednisone16 claims
- Nitrofurantoin Mono-Macro14 claims
- Doxycycline Hyclate13 claims
- Azithromycin11 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
- Afc Physicians OF Connecticut PCNorwalk, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Lewis Wasserman among 2,623 internal medicine physician records in Connecticut
Mark Lewis Wasserman, 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 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 52% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1992 · median 2004 among the 1,646 with a school on file
- Record last updated2011 · 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).
329 internal medicine physician records list a practice address in New Haven
They are 329 of the 9,793 NPPES records with a practice address in New Haven, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in New Haven → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Oluremi AliyuNew Haven, CT 065191023083771
- Tracy Battaglia, M.D.New Haven, CT 065191174508543
- Sarwat Chaudhry, MDNew Haven, CT 065191225011448
- Matthew Ellman, MDNew Haven, CT 065191215919642
- David Fiellin, MDNew Haven, CT 065191194700666
- Joanne Foodim, MDNew Haven, CT 065191780663237
- Sally Haskell, MDNew Haven, CT 065191336119411
- Janet Henrich, MDNew Haven, CT 065191679556807
Common questions
What is Mark Lewis Wasserman, MD's NPI number?
Mark Lewis Wasserman, MD's National Provider Identifier (NPI) is 1487680625, issued on Jun 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Lewis Wasserman, MD located?
The NPPES record lists a practice address at 400 Columbus Ave, New Haven, CT, 06519. Phone: (203) 503-3250. Providers update this record themselves, so call before visiting.
How can I verify Mark Lewis Wasserman, MD's license?
NPPES lists Connecticut license number 036223, 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 Mark Lewis Wasserman, MD prescribe under Medicare Part D?
In 2024, Mark Lewis Wasserman, MD had 230 Medicare Part D claims for 154 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.