STEVE R WILLIAMS M.D.
NPI 1639141435
Physical Medicine & Rehabilitation in Philadelphia, PA

Active since February 06, 2006PECOS Enrolled
25 S 9TH ST, PHILADELPHIA, PA 19107(215) 955-1200(215) 955-0861 Get Directions Write a Review

NPPES record last updated: December 20, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 20, 2018, May 11, 2017, Nov 15, 2016 (3 updates tracked since 2016).

About Steve R Williams M.d. NPPES

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

STEVE R WILLIAMS M.D. (NPI 1639141435) is an individual physical medicine & rehabilitation provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD460115) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1639141435
Entity TypeIndividualMale
Primary Taxonomy208100000X
Provider Legal NameSTEVE R WILLIAMSCredential: M.D.
Location Address25 S 9TH STPhiladelphia, PA 19107-4408
Mailing Address25 S 9th St Fl 1Philadelphia, PA 19107-4408 · (215) 955-1200 · Fax (215) 923-6808
Fax(215) 955-0861
Sole ProprietorNo
Enumeration DateFebruary 6, 2006
Last NPPES UpdateDecember 20, 20183 updates tracked since enumeration
✔ NPI 1639141435 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysical Medicine & RehabilitationAllopathic & Osteopathic Physicians
Taxonomy Code208100000X
Licenses✔ Licensed in PA · MD460115✔ Licensed in WA · 60610303
Definition
Physical medicine and rehabilitation, also referred to as rehabilitation medicine, is the medical specialty concerned with diagnosing, evaluating, and treating patients with physical disabilities. These disabilities may arise from conditions affecting the musculoskeletal system such as neck and back pain, sports injuries, or other painful conditions affecting the limbs, such as carpal tunnel syndrome. Alternatively, the disabilities may result from neurological trauma or disease such as spinal cord injury, head injury or stroke. A physician certified in physical medicine and rehabilitation is often called a physiatrist. The primary goal of the physiatrist is to achieve maximal restoration of physical, psychological, social and vocational function through comprehensive rehabilitation. Pain management is often an important part of the role of the physiatrist. For diagnosis and evaluation, a physiatrist may include the techniques of electromyography to supplement the standard history, physical, x-ray and laboratory examinations. The physiatrist has expertise in the appropriate use of therapeutic exercise, prosthetics (artificial limbs), orthotics and mechanical and electrical devices.
25 S 9TH ST, Philadelphia, PA 19107

Secondary Practice Locations 2

Location 11513 Race StPhiladelphia, PA 19102-1125 · Phone (215) 587-3000 · Fax (215) 557-8256
Location 23 Crescent Dr Fl 3Philadelphia, PA 19112-1016 · Phone (215) 503-3321 · Fax (215) 503-7180

Other Identifiers 1

Medicaid103292180PA

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Steve R Williams M.d. 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 Steve Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

General Practice
33 S. 9TH STREET
Philadelphia, PA 19107
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 1,739 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.

Other Providers at the Same Location NPPES 15

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

Physical Medicine & Rehabilitation
25 S 9TH ST, DEPT. OF REHABILITATION MEDICINE
PHILADELPHIA, PA 19107
Physical Therapist
25 S 9TH ST
PHILADELPHIA, PA 19107
Physical Medicine & Rehabilitation
25 S 9TH ST
PHILADELPHIA, PA 19107
Physical Medicine & Rehabilitation
25 S 9TH ST
PHILADELPHIA, PA 19107
Rehabilitation Hospital
25 S 9TH ST
PHILADELPHIA, PA 19107
Physical Medicine & Rehabilitation
25 S 9TH ST
PHILADELPHIA, PA 19107
Physical Medicine & Rehabilitation
25 S 9TH ST
PHILADELPHIA, PA 19107
Physical Medicine & Rehabilitation
25 S 9TH ST
PHILADELPHIA, PA 19107

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 Steve Williams's NPI number?

The NPI number for Steve Williams is 1639141435. It was assigned to this individual provider in the NPPES registry on February 6, 2006.

Where is Steve Williams located?

Steve Williams practices at 25 S 9th St, Philadelphia, PA 19107. The listed phone number is (215) 955-1200.

What is Steve Williams's specialty?

The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.

Is Steve Williams enrolled in Medicare?

Yes. Steve Williams is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Steve Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Steve Williams reassigns Medicare benefits to Jefferson University Physicians (Philadelphia, PA). 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 Steve Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Steve Williams accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Steve Williams 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 Steve Williams was last updated on December 20, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.