John Earl Sather, MD
Emergency Medicine Physician · New Haven, CT
John Earl Sather, MD is an emergency medicine physician with a practice address in New Haven, Connecticut, and NPI 1528049525, issued on Nov 8, 2005. Check the license (Connecticut 039552, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Earl Sather
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 039552 CT
Self-reported in NPPES; status is on the state search - Practice location
- 20 York St, New Haven, CT 06510
- Phone
- (203) 688-2222
- Enumerated
- Nov 8, 2005
- Record last updated
- Apr 4, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (203) 785-4580
- Medicaid ID
- 001395525 CT
- Medicare enrollment
- Enrolled (PECOS I20050603000497); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1997
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 846 in Connecticut → Look up another NPI →
Also registered at 20 York St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Earl Sather in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 039552Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average emergency medicine physician in 2024
12 Medicare Part D claims for 12 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
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
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Earl Sather among 846 emergency medicine physician records in Connecticut
John Earl Sather, MD is one of 846 emergency medicine physician records with a practice address in Connecticut. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1997 · median 2011 among the 574 with a school on file
- Record last updated2011 · 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 207P00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
204 emergency medicine physician records list a practice address in New Haven
They are 204 of the 9,793 NPPES records with a practice address in New Haven, and 846 emergency medicine physician records in Connecticut.
All 846 in Connecticut → Every provider in New Haven → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- David Cone, MDNew Haven, CT 065101770571440
- Leigh Evans, MDNew Haven, CT 065101134100704
- Karen Jubanyik-Barber, MDNew Haven, CT 065101336138098
- Edward Monico, MDNew Haven, CT 065101992789499
- Christopher Moore, MDNew Haven, CT 065101679554240
- Harry Moscovitz, MDNew Haven, CT 065101326038860
- Carolyn Rambus, MDNew Haven, CT 065101083685721
- Basmah Safdar, MDNew Haven, CT 065101942281514
Common questions
What is John Earl Sather, MD's NPI number?
John Earl Sather, MD's National Provider Identifier (NPI) is 1528049525, issued on Nov 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Earl Sather, MD located?
The NPPES record lists a practice address at 20 York St, New Haven, CT, 06510. Phone: (203) 688-2222. Providers update this record themselves, so call before visiting.
How can I verify John Earl Sather, MD's license?
NPPES lists Connecticut license number 039552, 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 John Earl Sather, MD prescribe under Medicare Part D?
In 2024, John Earl Sather, MD had 12 Medicare Part D claims for 12 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is John Earl Sather, MD'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.