Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John D Williams, MD

Individual provider Hospitalist Physician · NPI 1366707580

John D Williams, MD is registered under Family Practice in Middletown, Connecticut. Graduated from Tufts University School of Medicine in 2012, 14 years ago. Practices with Middlesex Hospital, a 229-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Connecticut.

Years since qualifying
14
Trained at
Tufts University School of Medicine
Licensed in
CT
In the registry since
2012
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

90 S Main St
Middletown, CT 06457-3649
Phone: (860) 358-6486
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 055047 (CT)
Hospitalist Physician Taxonomy 208M00000X · Licence 55047 (CT)

Record details

NPI number1366707580
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 13, 2012
Last updated in NPPESAugust 30, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Also practisesHOSPITALIST
Medical schoolTUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice Middlesex Hospital — 229 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal or shaving of skin growth 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients139
Services billed 407 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Middlesex Hospital Hospital · Middletown, CT
  • Middlesex Health Care At Home And Hospice Program Home health agency · Middletown, CT
  • Middlesex Health Care At Home & Hospice Program Hospice · Middletown, CT

Colleagues at Middlesex Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 229 clinicians in the practice; 12 are shown here.

Other providers in Middletown