DAVID J. SLY DO
NPI 1255387148
Family Medicine in San Francisco, CA
About David J. Sly Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID J. SLY DO (NPI 1255387148) is an individual family medicine provider in San Francisco, California, licensed in California (20A22993) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, maintains 4 additional practice locations, and is a graduate of At Still University Of Health Sciences, College Of Osteo Med, Kirksville (1990).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
David J. Sly Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show David Sly reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Surprise, AZ 85374
- Reassigned Medicare billing, Arizona enrollment
- 123 clinicians in this Medicare group
Phoenix, AZ 85016
- Reassigned Medicare billing, Arizona enrollment
- 49 clinicians in this Medicare group
Lewisville, TX 75057
- Reassigned Medicare billing, Iowa enrollment
- Medicare enrollment name: Teladoc Health Medical Group PA
Austin, TX 78758
- Reassigned Medicare billing, Texas enrollment
- 1,188 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94127 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is David Sly's NPI number?
The NPI number for David Sly is 1255387148. It was assigned to this individual provider in the NPPES registry on May 25, 2006.
Where is David Sly located?
David Sly practices at 2 W Portal Ave, San Francisco, CA 94127. The listed phone number is (888) 663-6331.
What is David Sly's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is David Sly enrolled in Medicare?
Yes. David Sly is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for David Sly's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Sly reassigns Medicare benefits to 4 organizations: Iora Senior Health, LLC (Surprise, AZ), Omg Arizona, LLC (Phoenix, AZ), Teladoc Health Medical Group, P.A. (Lewisville, TX) and Seton Family Of Doctors (Austin, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for David Sly's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Sly accept?
Health plans from Blue Cross and Blue Shield of Texas, Cigna HealthCare of Arizona, Inc and Moda Health Plan, Inc. list David Sly as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for David Sly was last updated on August 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# David J. Sly, DO · NPI 1255387148
Family Medicine physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since May 25, 2006.
## Identity
- **NPI:** 1255387148 (Entity type: Individual)
- **Enumerated:** May 25, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 20A22993 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2 W PORTAL AVE, San Francisco, CA 94127-1304
- **Phone:** (888) 663-6331 · **Fax:** (415) 252-7176
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Iora Senior Health, LLC (NPI 1952896235, Surprise, AZ); Omg Arizona, LLC (NPI 1184014854, Phoenix, AZ); Teladoc Health Medical Group, P.A. (NPI 1245403567, Lewisville, TX); Seton Family Of Doctors (NPI 1225644065, Austin, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** At Still University Of Health Sciences, College Of Osteo Med, Kirksville, class of 1990
## Record status
- **NPPES last updated:** August 25, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1255387148) · Data from the CMS NPPES public registry.