Katherine Buckner Orr, MD
Internal Medicine Physician · New Haven, CT
Katherine Buckner Orr, MD is an internal medicine physician with a practice address in New Haven, Connecticut, and NPI 1285217422, issued on May 5, 2021. Check the license (Connecticut 80976, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Katherine Buckner Orr
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 80976 CT
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lock St, New Haven, CT 06511
- Phone
- (203) 432-0246
- Enumerated
- May 5, 2021
- Record last updated
- Aug 7, 2025
- Medicare enrollment
- Enrolled (PECOS I20251215002417); may accept Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 55 Lock St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sonia Allard, RNRegistered Nurse1801309273
- Rafiah Anjum, ODOptometrist1992452627
- Ruben AtilanoMental Health Counselor1396314084
- Marie Baker, PSYCHOLOGISTClinical Psychologist1487396875
- Julia Bancroft, NPFamily Nurse Practitioner1235656182
- Stefany Batista Reyes, LCSWClinical Social Worker1104527845
Verify Katherine Buckner Orr in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 80976Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
252 Medicare Part D claims for 53 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa16 claims
- Atorvastatin Calcium14 claims
- Amlodipine Besylate11 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 Buckner Orr among 2,623 internal medicine physician records in Connecticut
Katherine Buckner Orr, 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 2021, is newer than 91% of them.
- NPI issued2021 · 91% of these records are older, 5% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2021 · median 2004 among the 1,646 with a school on file
- Record last updated2025 · 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
- Patrick Asiedu, M.D.New Haven, CT 065111922078914
- Richard Barse, MDNew Haven, CT 065111013987098
- Stephen Brenner, MDNew Haven, CT 065111730188764
- Auguste Fortin, MDNew Haven, CT 065111386618692
- Samuel Geller, M.D.New Haven, CT 065111487644860
- Lee Jung, M.D.New Haven, CT 065111932199288
- Judy Kleinstein, MDNew Haven, CT 065111831187319
- Robert Linden, MDNew Haven, CT 065111841283736
Common questions
What is Katherine Buckner Orr, MD's NPI number?
Katherine Buckner Orr, MD's National Provider Identifier (NPI) is 1285217422, issued on May 5, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Buckner Orr, MD located?
The NPPES record lists a practice address at 55 Lock St, New Haven, CT, 06511. Phone: (203) 432-0246. Providers update this record themselves, so call before visiting.
How can I verify Katherine Buckner Orr, MD's license?
NPPES lists Connecticut license number 80976, 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 Buckner Orr, MD prescribe under Medicare Part D?
In 2024, Katherine Buckner Orr, MD had 252 Medicare Part D claims for 53 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.