Connor O'Neill-Dee, MD
Nephrology Physician · Boston, MA
Connor O'Neill-Dee, MD is a nephrology physician with a practice address in Boston, Massachusetts, and NPI 1194301051, issued on Mar 22, 2021. Check the license (Massachusetts 1023230, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Connor O'Neill-Dee
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 1023230 MA
Self-reported in NPPES; status is on the state search - Practice location
- 725 Albany Street, Suite 8C, Boston, MA 02118
- Phone
- (617) 414-8680
- Enumerated
- Mar 22, 2021
- Record last updated
- Jul 10, 2026
- Fax
- (617) 414-8664
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 417 in Massachusetts → Look up another NPI →
Also registered at 725 Albany Street, Suite 8C
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Connor O'Neill-Dee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1023230Check 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 nephrology physician in 2024
118 Medicare Part D claims for 30 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Atorvastatin Calcium14 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.
Connor O'Neill-Dee among 417 nephrology physician records in Massachusetts
Connor O'Neill-Dee, MD is one of 417 nephrology physician records with a practice address in Massachusetts. 78% 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 97% of them.
- NPI issued2021 · 97% of these records are older, 2% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Massachusetts
There are 417 nephrology physician records in Massachusetts.
All 417 in Massachusetts → Every provider in Boston → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Vivian AbernethyBoston, MA 021181710960232
- Laurence Beck, M.D., PH.D.Boston, MA 021181912954371
- Jasvinder Bhatia, M.D.Boston, MA 021181346225497
- Ramon Bonegio, MDBoston, MA 021181235149063
- Steven Borkan, M.D.Boston, MA 021181790760650
- Vipul Chitalia, MDBoston, MA 021181306883913
- Herbert Cohen, M.D.Boston, MA 021181417933565
- John Forman, MDBoston, MA 021181932166253
Common questions
What is Connor O'Neill-Dee, MD's NPI number?
Connor O'Neill-Dee, MD's National Provider Identifier (NPI) is 1194301051, issued on Mar 22, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Connor O'Neill-Dee, MD located?
The NPPES record lists a practice address at 725 Albany Street, Suite 8C, Boston, MA, 02118. Phone: (617) 414-8680. Providers update this record themselves, so call before visiting.
How can I verify Connor O'Neill-Dee, MD's license?
NPPES lists Massachusetts license number 1023230, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Connor O'Neill-Dee, MD prescribe under Medicare Part D?
In 2024, Connor O'Neill-Dee, MD had 118 Medicare Part D claims for 30 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.