AO ZHANG MD, PHD
NPI 1285139139
Urology in Providence, RI
About Ao Zhang Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AO ZHANG MD, PHD (NPI 1285139139) is an individual urology provider in Providence, Rhode Island, licensed in Rhode Island (MD21475) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, maintains a secondary practice location in New York, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Ao Zhang Md, Phd 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 Ao Zhang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 452 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02904 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Ao Zhang's NPI number?
The NPI number for Ao Zhang is 1285139139. It was assigned to this individual provider in the NPPES registry on March 23, 2018.
Where is Ao Zhang located?
Ao Zhang practices at 195 Collyer St Ste 201, Providence, RI 02904. The listed phone number is (401) 272-7799.
What is Ao Zhang's specialty?
The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.
Is Ao Zhang enrolled in Medicare?
Yes. Ao Zhang 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 Ao Zhang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ao Zhang reassigns Medicare benefits to Mskcc Surgery Group (New York, NY). 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 Ao Zhang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ao Zhang was last updated on September 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 47 days 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.
# Ao Zhang, MD, PHD · NPI 1285139139
Urology physician in Providence, Rhode Island. Individual provider, active in the CMS NPPES registry since March 23, 2018.
## Identity
- **NPI:** 1285139139 (Entity type: Individual)
- **Enumerated:** March 23, 2018
- **Primary specialty:** Urology · taxonomy 208800000X
- **State license:** MD21475 (Rhode Island)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 195 COLLYER ST STE 201, Providence, RI 02904-1869
- **Phone:** (401) 272-7799 · **Fax:** (401) 453-9078
## 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:** Mskcc Surgery Group (NPI 1699766261, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** September 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1285139139) · Data from the CMS NPPES public registry.