OANA ELENA ZAHA
NPI 1811201494
Internal Medicine - Rheumatology in North Haven, CT
About Oana Elena Zaha NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OANA ELENA ZAHA (NPI 1811201494) is an individual rheumatology provider in North Haven, Connecticut, licensed in Connecticut (54441) and active in the NPI registry since August 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2004).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Oana Elena Zaha is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Oana Elena Zaha reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hamden, CT 06514
- Reassigned Medicare billing, Connecticut enrollment
- 3,728 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06473 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NORTH HAVEN, CT 06473
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Oana Elena Zaha's NPI number?
The NPI number for Oana Elena Zaha is 1811201494. It was assigned to this individual provider in the NPPES registry on August 5, 2010.
Where is Oana Elena Zaha located?
Oana Elena Zaha practices at 6 Devine St Fl 2, North Haven, CT 06473. The listed phone number is (203) 287-6200.
What is Oana Elena Zaha's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Oana Elena Zaha enrolled in Medicare?
Yes. Oana Elena Zaha is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Oana Elena Zaha's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Oana Elena Zaha reassigns Medicare benefits to Yale University (Hamden, CT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Oana Elena Zaha's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Oana Elena Zaha accept?
Health plans from Anthem Blue Cross and Blue Shield list Oana Elena Zaha as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Oana Elena Zaha was last updated on July 29, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Oana Elena Zaha · NPI 1811201494
Rheumatology physician in North Haven, Connecticut. Individual provider, active in the CMS NPPES registry since August 5, 2010.
## Identity
- **NPI:** 1811201494 (Entity type: Individual)
- **Enumerated:** August 5, 2010
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** 54441 (Connecticut)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 6 DEVINE ST FL 2, North Haven, CT 06473-2195
- **Phone:** (203) 287-6200
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Yale University (NPI 1134391824, Hamden, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2004
## Record status
- **NPPES last updated:** July 29, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1811201494) · Data from the CMS NPPES public registry.