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MICHAEL SAEYOUNG OH MD
NPI 1285088187
Internal Medicine - Hematology & Oncology in Santa Monica, CA

Active since April 17, 2016PECOS EnrolledAccepts Medicare Assignment
2020 SANTA MONICA BLVD STE 600, SANTA MONICA, CA 90404(310) 829-5471(310) 829-6192 Get Directions Write a Review

NPPES record last updated: July 1, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 1, 2025, Jun 18, 2025, Mar 9, 2025 and 2 more (5 updates tracked since 2019).

About Michael Saeyoung Oh Md NPPES

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

MICHAEL SAEYOUNG OH MD (NPI 1285088187) is an individual hematology & oncology provider in Santa Monica, California, licensed in California (A168522) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (2016).

NPPES Registry Identity

NPI1285088187
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameMICHAEL SAEYOUNG OHCredential: MD
Location Address2020 SANTA MONICA BLVD STE 600Santa Monica, CA 90404-2131
Mailing Address5767 W Century Blvd Ste 400Los Angeles, CA 90045-5631 · (310) 301-5200
Phone(310) 829-5471
Fax(310) 829-6192
Sole ProprietorNo
Medical School CMSYale University School Of MedicineGraduated 2016
Enumeration DateApril 17, 2016
Last NPPES UpdateJuly 1, 20255 updates tracked since enumeration
NPPES CertifiedJuly 1, 2025
✔ NPI 1285088187 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in CA · A168522
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal MedicineTaxonomy 207R00000X · License A168522 (CA)
2020 SANTA MONICA BLVD STE 600, Santa Monica, CA 90404
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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 and accepts Medicare assignment

Michael Saeyoung Oh Md 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 ID7810289360
PECOS Enrollment IDI20250613001073
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 Michael Oh reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

The Regents Of The University Of California
3.6 mi
Internal Medicine
200 MEDICAL PLAZA, SUITE 365,530,420,250,120,214
Los Angeles, CA 90095
  • Reassigned Medicare billing, California enrollment
  • 1,766 clinicians in this Medicare group
NPI 1235107566 (310) 794-1276

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 90404 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.

AARON LISBERG MD
Internal Medicine (Hematology & Oncology)
2020 SANTA MONICA BLVD STE 600
SANTA MONICA, CA 90404
Los Angeles County (310) 826-5471
ZEV ARYEH WAINBERG MD
Internal Medicine (Hematology & Oncology)
2020 SANTA MONICA BLVD STE 600
SANTA MONICA, CA 90404
Los Angeles County (310) 829-5471
MISS BLANCA ARACELI LEDEZMA MSN, NP
Internal Medicine (Hematology & Oncology)
2020 SANTA MONICA BLVD STE 600
SANTA MONICA, CA 90404
Los Angeles County (310) 289-5471
CAROLINE YENJUNG CHEN
Internal Medicine (Hematology & Oncology)
2020 SANTA MONICA BLVD STE 600
SANTA MONICA, CA 90404
Los Angeles County (310) 826-5471
NIKESHAN JEYAKUMAR MD
Internal Medicine (Hematology & Oncology)
2020 SANTA MONICA BLVD STE 600
SANTA MONICA, CA 90404
Los Angeles County (310) 829-5471
ANN MARIE SINEY-YEH RN, MSN, ANP-BC
Nurse Practitioner
2020 SANTA MONICA BLVD STE 600
SANTA MONICA, CA 90404
Los Angeles County (310) 829-5471
JASMINE LAVERNE MITCHELL MD
Internal Medicine (Hematology & Oncology)
2020 SANTA MONICA BLVD STE 600
SANTA MONICA, CA 90404
Los Angeles County (310) 829-5471
PREMIERE ONCOLOGY, A MEDICAL CORPORATION
Specialist
2020 SANTA MONICA BLVD STE 600
SANTA MONICA, CA 90404
Los Angeles County (310) 633-8400

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 Michael Oh's NPI number?

The NPI number for Michael Oh is 1285088187. It was assigned to this individual provider in the NPPES registry on April 17, 2016.

Where is Michael Oh located?

Michael Oh practices at 2020 Santa Monica Blvd Ste 600, Santa Monica, CA 90404. The listed phone number is (310) 829-5471.

What is Michael Oh's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Michael Oh enrolled in Medicare?

Yes. Michael Oh 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 Michael Oh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Oh reassigns Medicare benefits to The Regents Of The University Of California (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 Michael 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 Michael Oh was last updated on July 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.