Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

STEVEN JEFFERIS
NPI 1366314858
Physical Therapist in Modesto, CA

Active since September 23, 2025Accepts Medicare Assignment
2112 MCHENRY AVE STE B, MODESTO, CA 95350(209) 572-2114 Get Directions Write a Review

NPPES record last updated: September 28, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 28, 2026, Jan 23, 2026, Oct 6, 2025 (3 updates tracked since 2025).

About Steven Jefferis NPPES

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

STEVEN JEFFERIS (NPI 1366314858) is an individual physical therapist in Modesto, California, licensed in California (311139) and active in the NPI registry since September 2025. He maintains 2 additional practice locations and is a graduate of Other (2025).

NPPES Registry Identity

NPI1366314858
Entity TypeIndividualMale
Primary Taxonomy225100000X
Provider Legal NameSTEVEN JEFFERIS
Location Address2112 MCHENRY AVE STE BModesto, CA 95350-3261
Mailing Address2001 Butterfield Rd Ste 1600Downers Grove, IL 60515-1211 · (866) 370-8206
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateSeptember 23, 2025
Last NPPES UpdateSeptember 28, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 28, 2026
✔ NPI 1366314858 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysical TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Taxonomy Code225100000X
Licenses✔ Licensed in CA · 311139✔ Licensed in DE · CP052501T✔ Licensed in MA · PTL89095
Definition
Physical therapists (PTs) are licensed health care professionals who diagnose and treat individuals of all ages, from newborns to the very oldest, who have medical problems or other health-related conditions that limit their abilities to move and perform functional activities in their daily lives. PTs examine each individual and develop a plan using treatment techniques to promote the ability to move, reduce pain, restore function, and prevent disability. In addition, PTs work with individuals to prevent the loss of mobility before it occurs by developing fitness- and wellness-oriented programs for healthier and more active lifestyles. PTs:
  • Diagnose and manage movement dysfunction and enhance physical and functional abilities.
  • Restore, maintain, and promote not only optimal physical function but optimal wellness and fitness and optimal quality of life as it relates to movement and health.
  • Prevent the onset, symptoms, and progression of impairments, functional limitations, and disabilities that may result from diseases, disorders, conditions, or injuries.
  • Treat conditions of the musculoskeletal, neuromuscular, cardiovascular, pulmonary, and/or integumentary systems.
  • Address the negative effects attributable to unique personal and environmental factors as they relate to human performance.
PTs provide care for people in a variety of settings, including hospitals, private practices, outpatient clinics, home health agencies, schools, sports and fitness facilities, work settings, and nursing homes. State licensure is required in each state in which a PT practices.
2112 MCHENRY AVE STE B, Modesto, CA 95350

Secondary Practice Locations 2

Location 1632 W Stein HwySeaford, DE 19973-1204 · Phone (302) 629-5700 · Fax (302) 629-6001
Location 2947 Worcester StNatick, MA 01760-2032 · Phone (508) 720-0258

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

Steven Jefferis 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.

PECOS PAC ID3072001239
PECOS Enrollment IDI20251021002351, I20260324003820

Medicare Billing Reassignments

2

Medicare enrollment records show Steven Jefferis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Physical Therapist
124 MYRON ST
West Springfield, MA 01089
  • Reassigned Medicare billing, Massachusetts enrollment
  • 345 clinicians in this Medicare group
Dynamic Therapy Services LLC
  • Reassigned Medicare billing, Delaware enrollment
  • 103 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95350 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
$90.32 typical visit price
range $58.87 – $176.60
Typical copayment $22.58 (range $14.71 – $44.15)
Most-billed visit code 99203
Established Patient
$73.16 typical visit price
range $19.28 – $144.60
Typical copayment $18.29 (range $4.82 – $36.15)
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 3

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

Physical Therapist
2112 MCHENRY AVE STE B
MODESTO, CA 95350
Clinic/Center (Occupational Medicine)
2112 MCHENRY AVE STE B
MODESTO, CA 95350
Physical Therapy Assistant
2112 MCHENRY AVE STE B
MODESTO, CA 95350

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 Steven Jefferis's NPI number?

The NPI number for Steven Jefferis is 1366314858. It was assigned to this individual provider in the NPPES registry on September 23, 2025.

Where is Steven Jefferis located?

Steven Jefferis practices at 2112 Mchenry Ave Ste B, Modesto, CA 95350. The listed phone number is (209) 572-2114.

What is Steven Jefferis's specialty?

The primary specialty registered for this NPI is Physical Therapist with taxonomy code 225100000X.

Is Steven Jefferis enrolled in Medicare?

Yes. Steven Jefferis 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 Steven Jefferis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Steven Jefferis reassigns Medicare benefits to 2 organizations: Performance Rehabilitation Of Western New England LLC (West Springfield, MA) and Dynamic Therapy Services LLC (DE). 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 Steven Jefferis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Steven Jefferis accept?

Health plans from AmeriHealth Caritas Next list Steven Jefferis 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 Steven Jefferis was last updated on September 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days 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.