Katherine Anne Blackwell
Psychiatry Physician · New Haven, CT
Katherine Anne Blackwell is a psychiatry physician with a practice address in New Haven, Connecticut, and NPI 1841580149, issued on Apr 8, 2011. Check the license (Connecticut 052177, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Katherine Anne Blackwell
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 052177 CT
Self-reported in NPPES; status is on the state search - Practice location
- 20 York Street T209, New Haven, CT 06510
- Phone
- (203) 688-2259
- Enumerated
- Apr 8, 2011
- Record last updated
- Sep 15, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (203) 688-5599
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,174 in Connecticut → Look up another NPI →
Also registered at 20 York Street T209
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Peaper, MD PHDClinical Pathology/Laboratory Medicine Physician1932369295
Verify Katherine Anne Blackwell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 052177Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average psychiatry physician in 2024
34 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Katherine Anne Blackwell among 1,174 psychiatry physician records in Connecticut
Katherine Anne Blackwell 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 2011, is newer than 67% of them.
- NPI issued2011 · 67% of these records are older, 31% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- 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 Katherine Anne Blackwell's NPI number?
Katherine Anne Blackwell's National Provider Identifier (NPI) is 1841580149, issued on Apr 8, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Anne Blackwell located?
The NPPES record lists a practice address at 20 York Street T209, New Haven, CT, 06510. Phone: (203) 688-2259. Providers update this record themselves, so call before visiting.
How can I verify Katherine Anne Blackwell's license?
NPPES lists Connecticut license number 052177, 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 Katherine Anne Blackwell prescribe under Medicare Part D?
In 2024, Katherine Anne Blackwell had 34 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.