Annabelle Yanwen Guo, MD, PHD
Rheumatology Physician · Danbury, CT
Annabelle Yanwen Guo, MD, PHD is a rheumatology physician with a practice address in Danbury, Connecticut, and NPI 1316523095, issued on Mar 22, 2021. Check the license (Connecticut 81681, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Annabelle Yanwen Guo
- Credential
- MD, PHD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 81681 CT
Self-reported in NPPES; status is on the state search - Practice location
- 24 Hospital Ave, Danbury, CT 06810
- Phone
- (203) 739-7900
- Enumerated
- Mar 22, 2021
- Record last updated
- Apr 3, 2026
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 145 in Connecticut → Look up another NPI →
Also registered at 24 Hospital Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jacqueline AddonaStudent in an Organized Health Care Education/Training Program1669232443
- Fernando Afonso, M.D.Internal Medicine Physician1992980536
- Alka Aggarwal, MDInternal Medicine Physician1427041987
- Mohamed Ahmed, M.D.Internal Medicine Physician1235391756
- Syed Rakin Ahmed, MD, PHDStudent in an Organized Health Care Education/Training Program1518809870
- Gregory Albert, MDAnesthesiology Physician1588797930
Verify Annabelle Yanwen Guo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 81681Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average rheumatology physician in 2024
63 Medicare Part D claims for 29 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of 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.
Annabelle Yanwen Guo among 145 rheumatology physician records in Connecticut
Annabelle Yanwen Guo, MD, PHD 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 2021, is newer than 97% of them.
- NPI issued2021 · 97% of these records are older, under 1% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2026 · 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).
Rheumatology Physician providers in Connecticut
There are 145 rheumatology physician records in Connecticut.
All 145 in Connecticut → Every provider in Danbury → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Sana Chaudhary, MDDanbury, CT 068101831548684
- Jesse Dabit, MDDanbury, CT 068101740643907
- Birgit Kovacs, M.D.Danbury, CT 068101346570066
- Anne Liebling, MDDanbury, CT 068101184600371
- Kenneth Miller, MDDanbury, CT 068101083693873
- Richard Roseff, MDDanbury, CT 068101720007560
- Alla Rudinskaya, M.D.Danbury, CT 068101891710612
- Michael Spiegel, M.D.Danbury, CT 068101033198817
Common questions
What is Annabelle Yanwen Guo, MD, PHD's NPI number?
Annabelle Yanwen Guo, MD, PHD's National Provider Identifier (NPI) is 1316523095, issued on Mar 22, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Annabelle Yanwen Guo, MD, PHD located?
The NPPES record lists a practice address at 24 Hospital Ave, Danbury, CT, 06810. Phone: (203) 739-7900. Providers update this record themselves, so call before visiting.
How can I verify Annabelle Yanwen Guo, MD, PHD's license?
NPPES lists Connecticut license number 81681, 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 Annabelle Yanwen Guo, MD, PHD prescribe under Medicare Part D?
In 2024, Annabelle Yanwen Guo, MD, PHD had 63 Medicare Part D claims for 29 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
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.