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

Peter Caldwell

Individual provider Internal Medicine Physician · NPI 1982022919

Peter Caldwell practises Internal Medicine in Washington, District of Columbia. Graduated from University of Maryland School of Medicine in 2014, 12 years ago. Practices with Luminis Health Medical Group, LLC, a 549-clinician group and accepts Medicare assignment. Licensed in Louisiana.

Years since qualifying
12
Trained at
University of Maryland School of Medicine
Licensed in
LA
In the registry since
2014

Practice location Address checks out

900 23rd St NW
Washington, DC 20037-2342
Phone: (202) 715-5109
Fax: (202) 715-4871
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 304877 (LA)

Record details

NPI number1982022919
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 7, 2014
Last updated in NPPESApril 14, 2025
Certification dateApril 14, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Luminis Health Medical Group, Llc — 549 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients122
Services billed 315 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Luminis Health Medical Group, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 549 clinicians in the practice; 12 are shown here.

Other providers in Washington