Anne Sebastian, M.D.
Nephrology Physician · Stamford, CT
Anne Sebastian, M.D. is a nephrology physician with a practice address in Stamford, Connecticut, and NPI 1699180042, issued on Jun 24, 2014. Check the license (Connecticut 66637, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Anne Sebastian
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 66637 CT
Self-reported in NPPES; status is on the state search - Practice location
- 292 Long Ridge RD Ste 203, Stamford, CT 06902
- Phone
- (203) 324-7666
- Enumerated
- Jun 24, 2014
- Entity
- Type 1 · individual
Also registered at 292 Long Ridge RD Ste 203
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raphael Rosen, M.D.Nephrology Physician1215390307
Verify Anne Sebastian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 66637Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
31% fewer Medicare Part D claims than the average nephrology physician in 2024
1,049 Medicare Part D claims for 178 beneficiaries, against an average of 1,511 among the 8,473 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Calcitriol202 claims
- Losartan Potassium115 claims
- Amlodipine Besylate108 claims
- Lisinopril60 claims
- Carvedilol35 claims
- Olmesartan Medoxomil34 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.
Industry payments in 2024: $17.17
4 payments, mostly education; the largest payer was Travere Therapeutics, Inc.. The 6,365 providers of this specialty with any payment received $3,068.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital or facility affiliation
- Stamford Health Medical Group IncStamford, CT
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Nephrology Physician providers in Connecticut
There are 142 nephrology physician records in Connecticut.
Other nephrology physician records in Connecticut
- Mervet Abouelkair, M.D.New Britain, CT1740295112
- Ali Abu-Alfa, MDNew Haven, CT1841274610
- Nancy Adams, M.D.Farmington, CT1770588592
- Bayode Afolalu, M.D.Orange, CT1548442726
- Feras Al Shami, M.D.New Britain, CT1982086765
- Robert Alpern, MDNew Haven, CT1477785285
- Peter Aronson, MDNew Haven, CT1124002985
- Shehryar Ashraf, M.D.Farmington, CT1982966834
- Revekka BabayevStamford, CT1992022008
- David Baggish, M.D.Middletown, CT1598748808
Common questions
What is Anne Sebastian, M.D.'s NPI number?
Anne Sebastian, M.D.'s National Provider Identifier (NPI) is 1699180042, issued on Jun 24, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Anne Sebastian, M.D. located?
The NPPES record lists a practice address at 292 Long Ridge RD Ste 203, Stamford, CT, 06902. Phone: (203) 324-7666. Providers update this record themselves, so call before visiting.
How can I verify Anne Sebastian, M.D.'s license?
NPPES lists Connecticut license number 66637, 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 Anne Sebastian, M.D. prescribe under Medicare Part D?
In 2024, Anne Sebastian, M.D. had 1,049 Medicare Part D claims for 178 beneficiaries; the average among nephrology physician prescribers was 1,511. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.