Oana Elena Zaha
Rheumatology Physician · North Haven, CT
Oana Elena Zaha is a rheumatology physician with a practice address in North Haven, Connecticut, and NPI 1811201494, issued on Aug 5, 2010. Check the license (Connecticut 54441, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Oana Elena Zaha
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 54441 CT
Self-reported in NPPES; status is on the state search - Practice location
- 6 Devine St FL 2, North Haven, CT 06473
- Phone
- (203) 287-6200
- Enumerated
- Aug 5, 2010
- Record last updated
- Jul 29, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150928001808); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 145 in Connecticut → Look up another NPI →
Also registered at 6 Devine St FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marat Kribis, M.D.Student in an Organized Health Care Education/Training Program1609250547
- John Kuster, M.D.Allergy & Immunology Physician1952834087
- Katelyn Wong, MDPediatrics Physician1205491990
Verify Oana Elena Zaha in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 54441Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average rheumatology physician in 2024
745 Medicare Part D claims for 158 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Methotrexate139 claims
- Hydroxychloroquine Sulfate106 claims
- Prednisone104 claims
- Enbrel Sureclick41 claims
- Humira(Cf) Pen39 claims
- Allopurinol28 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.
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).
Oana Elena Zaha among 145 rheumatology physician records in Connecticut
Oana Elena Zaha is one of 145 rheumatology physician records with a practice address in Connecticut. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2004 · median 2004 among the 94 with a school on file
- Record last updated2015 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 rheumatology physician records list a practice address in North Haven
They are 6 of the 539 NPPES records with a practice address in North Haven, and 145 rheumatology physician records in Connecticut.
All 145 in Connecticut → Every provider in North Haven → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Vaidehi Chowdhary, M.D.North Haven, CT 064731417921297
- Monique Hinchcliff, MD, MSNorth Haven, CT 064731811106883
- Fotios Koumpouras, M. D.North Haven, CT 064731316982218
- Abhinav Seth, MD,PHDNorth Haven, CT 064731427224138
- Andrew Wang, M.D., PH.D.North Haven, CT 064731932499084
- Beth Valashinas, DOOrange, CT 064771114184306
- Daisy Bang, MDShelton, CT 064841356579460
- Elise Carlson, M.D.Milford, CT 064601811971260
Common questions
What is Oana Elena Zaha's NPI number?
Oana Elena Zaha's National Provider Identifier (NPI) is 1811201494, issued on Aug 5, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Oana Elena Zaha located?
The NPPES record lists a practice address at 6 Devine St FL 2, North Haven, CT, 06473. Phone: (203) 287-6200. Providers update this record themselves, so call before visiting.
How can I verify Oana Elena Zaha's license?
NPPES lists Connecticut license number 54441, 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 Oana Elena Zaha prescribe under Medicare Part D?
In 2024, Oana Elena Zaha had 745 Medicare Part D claims for 158 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Oana Elena Zaha'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.