CAROLINE KOO MD
NPI 1093917254
Physical Medicine & Rehabilitation in Union City, CA

Active since June 01, 2007PECOS Enrolled
3553 WHIPPLE RD FL 2, UNION CITY, CA 94587(510) 675-3070 Get Directions Write a Review

NPPES record last updated: May 13, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 13, 2024, Feb 16, 2017 (2 updates tracked since 2017).

About Caroline Koo Md NPPES

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

CAROLINE KOO MD (NPI 1093917254) is an individual physical medicine & rehabilitation provider in Union City, California, licensed in New Hampshire (0563) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1093917254
Entity TypeIndividualFemale
Primary Taxonomy208100000X
Provider Legal NameCAROLINE KOOCredential: MD
Location Address3553 WHIPPLE RD FL 2Union City, CA 94587-1507
Mailing Address3553 Whipple Rd Fl 2Union City, CA 94587-1507 · (510) 675-3070
Sole ProprietorNo
Enumeration DateJune 1, 2007
Last NPPES UpdateMay 13, 20242 updates tracked since enumeration
NPPES CertifiedMay 13, 2024
✔ NPI 1093917254 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysical Medicine & RehabilitationAllopathic & Osteopathic Physicians
Taxonomy Code208100000X
License✔ Licensed in NH · 0563
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.
3553 WHIPPLE RD FL 2, Union City, CA 94587

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)

Caroline Koo 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 Caroline Koo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Internal Medicine
1190 VETERANS BLVD
Redwood City, CA 94063
  • Reassigned Medicare billing, California enrollment
  • 20,078 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 4

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

Audiologist
3553 WHIPPLE RD FL 2
UNION CITY, CA 94587
Audiologist
3553 WHIPPLE RD FL 2
UNION CITY, CA 94587
Physical Medicine & Rehabilitation (Pain Medicine)
3553 WHIPPLE RD FL 2
UNION CITY, CA 94587
Audiologist
3553 WHIPPLE RD FL 2
UNION CITY, CA 94587

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 Caroline Koo's NPI number?

The NPI number for Caroline Koo is 1093917254. It was assigned to this individual provider in the NPPES registry on June 1, 2007.

Where is Caroline Koo located?

Caroline Koo practices at 3553 Whipple Rd Fl 2, Union City, CA 94587. The listed phone number is (510) 675-3070.

What is Caroline Koo's specialty?

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

Is Caroline Koo enrolled in Medicare?

Yes. Caroline Koo is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Caroline Koo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Caroline Koo reassigns Medicare benefits to Permanente Medical Group Inc (Redwood City, 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 Caroline Koo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Caroline Koo accept?

Health plans from Taro Health list Caroline Koo 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 Caroline Koo was last updated on May 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.