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

David J. Sly, DO

Individual provider Family Medicine Physician · NPI 1255387148

David J. Sly, DO is registered under Family Practice in San Francisco, California. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1990, 36 years ago. Practices with Seton Family of Doctors, a 785-clinician group, works from 5 locations, accepts Medicare assignment and offers telehealth. Licensed in Arizona, California, Iowa and Nebraska.

Years since qualifying
36
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
AZ, CA, IA, NE
In the registry since
2006
Specialties on file
5
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

2 W Portal Ave
San Francisco, CA 94127-1304
Phone: (888) 663-6331
Fax: (415) 252-7176
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (4)

  • 2201 E Camelback Rd Ste 101a, Phoenix, AZ 85016-3495 — (888) 663-6331
  • 2 Embarcadero Ctr Lbby Level, San Francisco, CA 94111-3823 — (888) 663-6331
  • 1350 Connecticut Ave Nw Ste 1250, Washington, DC 20036-1728 — (888) 663-6331
  • 12 37th Street Pl, Sioux City, IA 51104-2102 — (712) 490-7815

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 20A22993 (CA)
Family Medicine Physician Taxonomy 207Q00000X · Licence 22993 (CA)
Family Medicine Physician Taxonomy 207Q00000X · Licence 223 (NE)
Family Medicine Physician Taxonomy 207Q00000X · Licence 008715 (AZ)
Family Medicine Physician Taxonomy 207Q00000X · Licence 02882 (IA)

Record details

NPI number1255387148
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 25, 2006
Last updated in NPPESAugust 25, 2025
Certification dateAugust 25, 2025

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 1990 (36 years in practice)
Group practice Seton Family Of Doctors — 785 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 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 patients46
Services billed 62 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.

Colleagues at Seton Family of Doctors

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 785 clinicians in the practice; 12 are shown here.

Other providers in San Francisco