Dr. Annabelle Guo MD, PHD
About this NPIWhat this record shows.
NPI 1316523095 is registered to Dr. Annabelle Guo MD, PHD, a Rheumatology Physician practising at 24 Hospital Ave in Danbury, Connecticut. Rheumatology Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Annabelle Guo MD, PHD has been enumerated in the National Provider Identifier (NPI) registry since 2021.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Order and Referring Only
- I20250911003184RheumatologyCT
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Dr. Annabelle Guo MD, PHD accepts. To confirm in-network status with your specific health plan, contact Dr. Annabelle Guo MD, PHD directly at (203) 739-7900.
Frequently asked
Yes. NPI 1316523095 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Rheumatology Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (203) 739-7900.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Dr. Annabelle Guo MD, PHD is a Type-1 individual NPI.