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COYIN OH
NPI 1225666464
Internal Medicine - Medical Oncology in Los Angeles, CA

Active since April 01, 2020PECOS Enrolled
127 S SAN VICENTE BLVD FL 7, LOS ANGELES, CA 90048(310) 423-8030(310) 967-8486 Get Directions Write a Review

NPPES record last updated: July 30, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 30, 2026, May 6, 2024, Apr 1, 2020 (3 updates tracked since 2020).

About Coyin Oh NPPES

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

COYIN OH (NPI 1225666464) is an individual medical oncology provider in Los Angeles, California, licensed in California (A208067) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (2020).

NPPES Registry Identity

NPI1225666464
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameCOYIN OH
Location Address127 S SAN VICENTE BLVD FL 7Los Angeles, CA 90048-3311
Mailing Address4140 W 190th StTorrance, CA 90504-5513
Phone(310) 423-8030
Fax(310) 967-8486
Sole ProprietorNo
Medical School CMSHarvard Medical SchoolGraduated 2020
Enumeration DateApril 1, 2020
Last NPPES UpdateJuly 30, 20263 updates tracked since enumeration
NPPES CertifiedJuly 30, 2026
✔ NPI 1225666464 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in CA · A208067
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
127 S SAN VICENTE BLVD FL 7, Los Angeles, CA 90048
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Coyin Oh is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6204229701
PECOS Enrollment IDI20260821004368
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 Coyin Oh reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cedars-Sinai Medical Center
0.2 mi
General Acute Care Hospital
8700 BEVERLY BLVD
Los Angeles, CA 90048
  • Reassigned Medicare billing, California enrollment
  • 1,001 clinicians in this Medicare group
NPI 1639172372 (323) 866-8600

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 90048 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
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
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.

JASON EARL CHAN M.D. PH.D.
Internal Medicine (Hematology & Oncology)
127 S SAN VICENTE BLVD FL 7
LOS ANGELES, CA 90048
Los Angeles County (310) 423-8530
DR. NATSAI CHARLENE NYAKUDARIKA M.D.
Obstetrics & Gynecology (Gynecologic Oncology)
127 S SAN VICENTE BLVD FL 7
LOS ANGELES, CA 90048
Los Angeles County (310) 423-5800
DR. NICHOLAS N NISSEN M.D.
Surgery (Surgical Critical Care)
127 S SAN VICENTE BLVD FL 7
LOS ANGELES, CA 90048
Los Angeles County (310) 423-6746
MR. ALESSIO PIGAZZI M.D.
Colon & Rectal Surgery
127 S SAN VICENTE BLVD FL 7
LOS ANGELES, CA 90048
Los Angeles County (310) 423-5874
MARC ATTIYEH
Surgery (Surgical Oncology)
127 S SAN VICENTE BLVD FL 7
LOS ANGELES, CA 90048
Los Angeles County (310) 423-6746
LAWRENCE WAYNE LIU MD
Internal Medicine (Medical Oncology)
127 S SAN VICENTE BLVD FL 7
LOS ANGELES, CA 90048
Los Angeles County (310) 423-1160
HITOMI HOSOYA MD
Internal Medicine (Hematology)
127 S SAN VICENTE BLVD FL 7
LOS ANGELES, CA 90048
Los Angeles County (310) 423-1160
VICTORIA RENAE CERDA MD, MPH
Obstetrics & Gynecology
127 S SAN VICENTE BLVD FL 7
LOS ANGELES, CA 90048
Los Angeles County (310) 423-5800

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 Coyin Oh's NPI number?

The NPI number for Coyin Oh is 1225666464. It was assigned to this individual provider in the NPPES registry on April 1, 2020.

Where is Coyin Oh located?

Coyin Oh practices at 127 S San Vicente Blvd Fl 7, Los Angeles, CA 90048. The listed phone number is (310) 423-8030.

What is Coyin Oh's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Coyin Oh enrolled in Medicare?

Yes. Coyin Oh is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Coyin Oh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Coyin Oh reassigns Medicare benefits to Cedars-Sinai Medical Center (Los Angeles, 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 Coyin Oh'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 Coyin Oh was last updated on July 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.