Tobias Diamond Wasser, M.D.
Psychiatry Physician · New Haven, CT
Tobias Diamond Wasser, M.D. is a psychiatry physician with a practice address in New Haven, Connecticut, and NPI 1588988414, issued on Mar 22, 2010. Check the license (Connecticut 051106, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Tobias Diamond Wasser
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 051106 CT
Self-reported in NPPES; status is on the state search - Practice location
- 20 York St # T-209, New Haven, CT 06510
- Phone
- (203) 688-2259
- Enumerated
- Mar 22, 2010
- Record last updated
- Jul 23, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (203) 688-5599
- Medicare enrollment
- Enrolled (PECOS I20131021000050); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,174 in Connecticut → Look up another NPI →
Also registered at 20 York St # T-209
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rita Abi-RaadAnatomic Pathology & Clinical Pathology Physician1992097273
- Neil Aggarwal, MDStudent in an Organized Health Care Education/Training Program1538397203
- Asima Ahmad, MD, MPHReproductive Endocrinology Physician1679893069
- Rahmat Ali, MDVascular & Interventional Radiology Physician1932490786
- Arik Alper, M.D.Pediatric Gastroenterology Physician1366715351
- Shelley Amen, M.D., PH.D.Psychiatry Physician1841558616
Verify Tobias Diamond Wasser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 051106Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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).
Bills Medicare through one group practice
- Hartford Healthcare Medical Group Specialists PLLCBridgeport, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tobias Diamond Wasser among 1,174 psychiatry physician records in Connecticut
Tobias Diamond Wasser, M.D. is one of 1,174 psychiatry physician records with a practice address in Connecticut. 70% 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 63% of them.
- NPI issued2010 · 63% of these records are older, 33% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2010 · median 2003 among the 503 with a school on file
- Record last updated2014 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
285 psychiatry physician records list a practice address in New Haven
They are 285 of the 9,793 NPPES records with a practice address in New Haven, and 1,174 psychiatry physician records in Connecticut.
All 1,174 in Connecticut → Every provider in New Haven → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Eric Berger, MDNew Haven, CT 065101407888746
- Joseph CheckNew Haven, CT 065101023121985
- Paul Desan, MDNew Haven, CT 065101689662686
- Tsilia Glinberg, MDNew Haven, CT 065101497736060
- David Greenfeld, M.D.New Haven, CT 065101851317366
- Frank Ninivaggi, MDNew Haven, CT 065101609880434
- Nancy Olson, M.D.New Haven, CT 065101003832049
- Anna Ostrovskaya, M. D.New Haven, CT 065101073556841
Common questions
What is Tobias Diamond Wasser, M.D.'s NPI number?
Tobias Diamond Wasser, M.D.'s National Provider Identifier (NPI) is 1588988414, issued on Mar 22, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Tobias Diamond Wasser, M.D. located?
The NPPES record lists a practice address at 20 York St # T-209, New Haven, CT, 06510. Phone: (203) 688-2259. Providers update this record themselves, so call before visiting.
How can I verify Tobias Diamond Wasser, M.D.'s license?
NPPES lists Connecticut license number 051106, 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.
What is Tobias Diamond Wasser, M.D.'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.