JOHN MARENKOVIC III
NPI 1013891688
Physical Therapist in Alturas, CA

Active since August 05, 2025Accepts Medicare Assignment
120 S MAIN ST, ALTURAS, CA 96101(530) 708-8860 Get Directions Write a Review

NPPES record last updated: August 5, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About John Marenkovic Iii NPPES

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

JOHN MARENKOVIC III (NPI 1013891688) is an individual physical therapist in Alturas, California, licensed in California (308101) and active in the NPI registry since August 2025. He is a graduate of Other (2025).

NPPES Registry Identity

NPI1013891688
Entity TypeIndividualMale
Primary Taxonomy225100000X
Provider Legal NameJOHN MARENKOVIC III
Location Address120 S MAIN STAlturas, CA 96101-4084
Mailing Address411 Wallace StKill Devil Hills, NC 27948-6835 · (330) 272-4910
Sole ProprietorYes
Medical School CMSOtherGraduated 2025
Enumeration DateAugust 5, 2025
NPPES CertifiedAugust 5, 2025
✔ NPI 1013891688 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
License✔ Licensed in CA · 308101
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.
120 S MAIN ST, Alturas, CA 96101

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

John Marenkovic Iii 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 ID6608365648
PECOS Enrollment IDI20251029003722

Medicare Billing Reassignment

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

Physical Therapy
5 BON AIR RD #C116
Larkspur, CA 94939
  • Reassigned Medicare billing, California enrollment
  • 18 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 96101 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
120 S MAIN ST
ALTURAS, CA 96101
Physical Therapy Assistant
120 S MAIN ST
ALTURAS, CA 96101
Pharmacist
120 S MAIN ST
ALTURAS, CA 96101

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 John Marenkovic's NPI number?

The NPI number for John Marenkovic is 1013891688. It was assigned to this individual provider in the NPPES registry on August 5, 2025.

Where is John Marenkovic located?

John Marenkovic practices at 120 S Main St, Alturas, CA 96101. The listed phone number is (530) 708-8860.

What is John Marenkovic's specialty?

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

Is John Marenkovic enrolled in Medicare?

Yes. John Marenkovic 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 organization bills Medicare for John Marenkovic's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Marenkovic reassigns Medicare benefits to Active Marin Physical Therapy Inc (Larkspur, 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 John Marenkovic'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 John Marenkovic was last updated on August 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.