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WILLIAM STEWART ADSIT MD
NPI 1922068311
Orthopaedic Surgery in San Diego, CA

Active since March 28, 2006PECOS Enrolled
7485 MISSION VALLEY RD, STE 104A, SAN DIEGO, CA 92108(619) 291-8930(619) 291-8491 Get Directions Write a Review

NPPES record last updated: June 15, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About William Stewart Adsit Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM STEWART ADSIT MD (NPI 1922068311) is an individual orthopaedic surgery provider in San Diego, California, licensed in California (G57564) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922068311
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameWILLIAM STEWART ADSITCredential: MD
Location Address7485 MISSION VALLEY RD, STE 104ASan Diego, CA 92108-4422
Mailing Address7485 Mission Valley Rd, Ste 104aSan Diego, CA 92108-4422 · (619) 291-8930 · Fax (619) 291-8491
Phone(619) 291-8930
Fax(619) 291-8491
Sole ProprietorNo
Enumeration DateMarch 28, 2006
Last NPPES UpdateJune 15, 2012
✔ NPI 1922068311 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in CA · G57564
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
7485 MISSION VALLEY RD, San Diego, CA 92108
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Other Identifiers 2

Medicare UPINF42465
Medicare ID-Type UnspecifiedW1762

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Stewart Adsit Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show William Adsit reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

California Orthopaedic Institute Medical Associates, Inc
Same address
Orthopaedic Surgery
7485 MISSION VALLEY ROAD, STE 104A
San Diego, CA 92108
  • Reassigned Medicare billing, California enrollment
  • 30 clinicians in this Medicare group
NPI 1245290899 (619) 291-8930

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92108 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.87 typical visit price
range $62.10 – $184.71
Typical copayment $23.71 (range $15.52 – $46.17)
Most-billed visit code 99203
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MELISSA ARAOJO PINEDA M.D.
Anesthesiology
7485 MISSION VALLEY RD
SAN DIEGO, CA 92108
San Diego County (619) 291-3737
DREW ALAN PETERSON MD
Orthopaedic Surgery
7485 MISSION VALLEY RD, SUITE 104 A
SAN DIEGO, CA 92108
San Diego County (619) 291-8930
JOHN E AKERS MD
Anesthesiology
7485 MISSION VALLEY RD, STE 206
SAN DIEGO, CA 92108
San Diego County (619) 291-3737
ROGER A. FREEMAN, M.D, INC.
Orthopaedic Surgery
7485 MISSION VALLEY RD, SUITE 103
SAN DIEGO, CA 92108
San Diego County (619) 819-7100
MATTHEW S JONES MD
Anesthesiology
7485 MISSION VALLEY RD, STE 106
SAN DIEGO, CA 92108
San Diego County (619) 291-3737
DR. MICHAEL HUNTER QUINN DPM
Podiatrist
7485 MISSION VALLEY RD, SUITE 104A
SAN DIEGO, CA 92108
San Diego County (619) 291-8930
MRS. FRANCESCA M BARTON P.T.
Physical Therapist
7485 MISSION VALLEY RD, SUITE 104 A
SAN DIEGO, CA 92108
San Diego County (619) 291-8930
JEFFREY EUGENE SCHULTZ MD
Orthopaedic Surgery
7485 MISSION VALLEY RD, STE 104A
SAN DIEGO, CA 92108
San Diego County (619) 291-8930

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 William Adsit's NPI number?

The NPI number for William Adsit is 1922068311. It was assigned to this individual provider in the NPPES registry on March 28, 2006.

Where is William Adsit located?

William Adsit practices at 7485 Mission Valley Rd Ste 104A, San Diego, CA 92108. The listed phone number is (619) 291-8930.

What is William Adsit's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is William Adsit enrolled in Medicare?

Yes. William Adsit is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for William Adsit's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Adsit reassigns Medicare benefits to California Orthopaedic Institute Medical Associates, Inc (San Diego, CA). The 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 William Adsit's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for William Adsit was last updated on June 15, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years 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.