Quick answers
- Which hospitals does John D. Williams work at?
- Medicare's official clinician data lists John D. Williams at 1 hospital: Middlesex Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John D. Williams see patients?
- Medicare's clinician data lists 2 practice locations, including Middletown, CT. Call before your visit to confirm the address.
- What is John D. Williams's specialty?
- Medicare lists Family Practice as the primary specialty, and also Hospitalist.
- Does John D. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says John D. Williams accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does John D. Williams offer telehealth?
- Medicare's clinician data says John D. Williams offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John D. Williams?
- (860) 358-5322, as listed in official Medicare / NPI Registry data.
- What is John D. Williams's NPI number?
- 1366707580. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John D. Williams works
Medicare's Facility Affiliation Data lists John D. Williams at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Middlesex HospitalMiddletown, CT · Acute Care Hospital · CCN 070020
Practice locations
Addresses where John D. Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 28 Crescent StMiddletown, CT 06457 (860) 358‑5322
- 90 S Main StMiddletown, CT 06457 (860) 358‑4821
Group practices
Medicare enrollment lists John D. Williams as a member of this group (CMS data updated 2026-10-02).
- Middlesex Hospital234 clinicians in the group
Specialties
- Family Practiceprimary
- Hospitalistalso
Other family doctors in Middletown
Clinicians with the same Medicare primary specialty in Middletown, CT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1366707580 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians