Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. John Lucian Davis Jr., MD

Individual provider Pulmonary Disease Physician · NPI 1124124144

Dr. John Lucian Davis Jr., MD is registered under Pulmonary Disease in New Haven, Connecticut. Graduated from Vanderbilt University School of Medicine in 2000, 26 years ago. Practices with Yale University, a 2,618-clinician group and accepts Medicare assignment. Licensed in California and Connecticut.

Years since qualifying
26
Trained at
Vanderbilt University School of Medicine
Licensed in
CA, CT
In the registry since
2006
Specialties on file
3
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

789 Howard Ave
New Haven, CT 06519-1304 Not confirmed with CMS for 11 years — call before visiting
Phone: (203) 785-4198
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence 53935 (CT)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence A86123 (CA)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 53935 (CT)

Record details

NPI number1124124144
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 16, 2006
Last updated in NPPESJuly 30, 2015

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolVANDERBILT UNIVERSITY SCHOOL OF MEDICINE
Graduated 2000 (26 years in practice)
Group practice Yale University — 2618 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients33
Services billed 86 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

Colleagues at Yale University

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2618 clinicians in the practice; 12 are shown here.

Other providers in New Haven