Nelson ChaoM.D.
Nelson Chao, M.D. is an Internal Medicine provider in Shelton, CT, as of July 2026.
- NPI1619974896
- Registered2005
- Class of1982
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Nelson Chao at a glance
- Provider
- Nelson Chao
- Credential
- M.D.
- Specialty
- Internal Medicine
- Procedures
- Internal Medicine CPT codes
- Location
- Shelton, CT
- Medical school graduation
- 1982
- NPI registered
- 2005
- NPI
- 1619974896
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Nelson Chao practice?
Nelson Chao, M.D. is based in Shelton, CT. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Nelson Chao's NPI number?
Nelson Chao's National Provider Identifier (NPI) is 1619974896, registered in 2005. Specialty on record: Internal Medicine; credential M.D.
How many Internal Medicine providers in Connecticut work at ambulatory surgery centers?
12 Internal Medicine surgeons and proceduralists in Connecticut are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Nelson Chao among them. The Connecticut Internal Medicine directory lists each one by city with credential, NPI, and center affiliations.
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