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

Dr. Thomas E Greely, MD

Individual provider Family Medicine Physician · NPI 1851336820

Dr. Thomas E Greely, MD is registered under Family Practice in Concord, California. Graduated from Ohio State University College of Medicine in 1989, 37 years ago. Practices with Seneca Healthcare District, a 22-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
37
Trained at
Ohio State University College of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

2700 Grant St Ste 200
Concord, CA 94520-2266 Not confirmed with CMS for 12 years — call before visiting
Phone: (925) 677-0500
Fax: (925) 677-0519
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence G74271 (CA)

Record details

NPI number1851336820
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 16, 2006
Last updated in NPPESMarch 25, 2014

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice Seneca Healthcare District — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 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 patients16
Services billed 34 a service is one billed item, such as a visit, a test or a procedure
Average patient age65

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 Seneca Healthcare District

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 22 clinicians in the practice; 12 are shown here.

Other providers in Concord