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SITH RIANTAWAN MD
NPI 1871056291
Psychiatry & Neurology - Psychiatry in Los Angeles, CA

Active since April 11, 2019PECOS Enrolled
4650 W SUNSET BLVD # 53, LOS ANGELES, CA 90027(323) 361-3849 Get Directions Write a Review

NPPES record last updated: May 29, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 29, 2023, Sep 21, 2022, Apr 11, 2019 (3 updates tracked since 2019).

About Sith Riantawan Md NPPES

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

SITH RIANTAWAN MD (NPI 1871056291) is an individual psychiatry provider in Los Angeles, California, licensed in California (A176668) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1871056291
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameSITH RIANTAWANCredential: MD
Location Address4650 W SUNSET BLVD # 53Los Angeles, CA 90027-6062
Mailing Address4650 W Sunset Blvd # 53Los Angeles, CA 90027-6062 · (323) 361-3849
Phone(323) 361-3849
Sole ProprietorNo
Enumeration DateApril 11, 2019
Last NPPES UpdateMay 29, 20233 updates tracked since enumeration
NPPES CertifiedMay 29, 2023
✔ NPI 1871056291 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · A176668
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
4650 W SUNSET BLVD # 53, Los Angeles, CA 90027
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sith Riantawan 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 Reassignments

2

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

Southern California Permanente Medical Group
0.2 mi
Health Maintenance Organization
4760 W SUNSET BLVD
Los Angeles, CA 90027
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1134151657 (323) 783-4011
Child And Family Psychological Services, PLLC
2,592 mi
Psychologist
89 ACCESS RD, SUITE 24
Norwood, MA 02062
  • Reassigned Medicare billing, Massachusetts enrollment
  • 349 clinicians in this Medicare group
NPI 1912987181 (781) 551-0999

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 90027 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
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
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 20

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

JUN HYUK PARK
Social Worker (Clinical)
4650 W SUNSET BLVD # 53
LOS ANGELES, CA 90027
Los Angeles County (909) 533-7044
MARIA ELAINE ALONZO
Marriage & Family Therapist
4650 W SUNSET BLVD # 53
LOS ANGELES, CA 90027
Los Angeles County (323) 361-3849
CAROLINA BARBEITO
Student in an Organized Health Care Education/Training Program
4650 W SUNSET BLVD # 53
LOS ANGELES, CA 90027
Los Angeles County (323) 361-3849
ELISA AMPARO
Registered Nurse (Case Management)
4650 W SUNSET BLVD # 53
LOS ANGELES, CA 90027
Los Angeles County (323) 361-2350
ALICE M PERCHES
Case Manager/Care Coordinator
4650 W SUNSET BLVD # 53
LOS ANGELES, CA 90027
Los Angeles County (323) 361-3849
KATAYOUN YAZDI-NEJAD MD
Psychiatry & Neurology (Psychiatry)
4650 W SUNSET BLVD # 53
LOS ANGELES, CA 90027
Los Angeles County (323) 361-3849
TIA TYNDAL M.A.
Psychologist
4650 W SUNSET BLVD # 53
LOS ANGELES, CA 90027
Los Angeles County (323) 361-3849
SAIRAM KUMAR
Pediatrics (Developmental - Behavioral Pediatrics)
4650 W SUNSET BLVD # 53
LOS ANGELES, CA 90027
Los Angeles County (323) 361-3849

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 Sith Riantawan's NPI number?

The NPI number for Sith Riantawan is 1871056291. It was assigned to this individual provider in the NPPES registry on April 11, 2019.

Where is Sith Riantawan located?

Sith Riantawan practices at 4650 W Sunset Blvd # 53, Los Angeles, CA 90027. The listed phone number is (323) 361-3849.

What is Sith Riantawan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Sith Riantawan enrolled in Medicare?

Yes. Sith Riantawan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Sith Riantawan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sith Riantawan reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Los Angeles, CA) and Child And Family Psychological Services, PLLC (Norwood, MA). 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 Sith Riantawan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sith Riantawan accept?

Health plans from Taro Health list Sith Riantawan 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 Sith Riantawan was last updated on May 29, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.