Ao Zhang, MD, PHD
Urology (CMS) · Providence, RI
At a glance
195 Collyer St Ste 201, Providence, RI 02904-1869
NPPES record updated Sep 9, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
195 Collyer St Ste 201Providence, RI 02904-1869
Additional reported practice locations
1275 York AveNew York, NY 100656007
Phone: 2126392000
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2018
- CMS specialties
- Urology
Practice groups
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Travel and lodging | $509.85 |
| Food and beverage | $174.94 |
Reporting companies
| Company | Amount |
|---|---|
| OLYMPUS CORPORATION OF THE AMERICAS | $534.87 |
| BAXTER HEALTHCARE | $149.92 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Urology (CMS)
- Taxonomy code
- 208800000X
- Enumeration date
- Mar 23, 2018
- Record updated
- Sep 9, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD, PHD
Reported taxonomies and licenses
208800000X
License reported: 333527 NY
208800000X · Primary
License reported: MD21475 RI
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
195 Collyer St Ste 201Providence, RI 02904-1869
- Phone
- (401) 272-7799
- Fax
- (401) 453-9078
Mailing address
15 LA SALLE SQPROVIDENCE, RI 029031814
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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