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DR. MONTHAKAN RATNARATHORN M.D.
NPI 1326071762
Orthopaedic Surgery - Pediatric Orthopaedic Surgery in Los Angeles, CA

Active since July 09, 2006PECOS Enrolled
814 FRANCISCO ST, LOS ANGELES, CA 90017(310) 497-5774(301) 491-7071 Get Directions Write a Review

NPPES record last updated: September 26, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 27, 2021, Nov 25, 2015 (2 updates tracked since 2015).

About Dr. Monthakan Ratnarathorn M.d. NPPES

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

DR. MONTHAKAN RATNARATHORN M.D. (NPI 1326071762) is an individual pediatric orthopaedic surgery provider in Los Angeles, California, licensed in California (A68760) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Los Angeles.

NPPES Registry Identity

NPI1326071762
Entity TypeIndividualFemale
Primary Taxonomy207XP3100X
Provider Legal NameDR. MONTHAKAN RATNARATHORNCredential: M.D.
Location Address814 FRANCISCO STLos Angeles, CA 90017-2530
Mailing Address814 Francisco StLos Angeles, CA 90017-2530 · (310) 497-5774 · Fax (301) 491-7071
Phone(310) 497-5774
Fax(301) 491-7071
Sole ProprietorNo
Enumeration DateJuly 9, 2006
Last NPPES UpdateSeptember 26, 20232 updates tracked since enumeration
NPPES CertifiedJuly 27, 2021
✔ NPI 1326071762 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Pediatric Orthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XP3100X
Licenses✔ Licensed in CA · A68760✔ Licensed in IL · 036135349
Definition
An orthopedic surgeon who has additional training and experience in diagnosing, treating and managing musculoskeletal problems in infants, children and adolescents. These may include limb and spine deformities (such as club foot, scoliosis); gait abnormalities (limping); bone and joint infections; broken bones.
814 FRANCISCO ST, Los Angeles, CA 90017
Open in Google Maps ↗

Secondary Practice Location 1

Location 13160 Geneva St, Shriners Hospitals for ChildrenLos Angeles, CA 90020-1117 · Phone (213) 388-3151 · Fax (213) 387-7528

Other Identifiers 2

Medicaid00A687600CA
MedicaidGR0085690CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Monthakan Ratnarathorn M.d. 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 Monthakan Ratnarathorn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
3.8 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

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 5

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

AMERICAN CURRENT CARE OF CALIFORNIA, A MEDICAL CORPORATION
Clinic/Center (Urgent Care)
814 FRANCISCO ST
LOS ANGELES, CA 90017
Los Angeles County (310) 491-7070
AMANDA VY-LYN FERGUSON PA
Physician Assistant
814 FRANCISCO ST
LOS ANGELES, CA 90017
Los Angeles County (909) 576-9050
MS. SOPHIA MARIE DURAN NURSE PRACTITIONER
Nurse Practitioner (Family)
814 FRANCISCO ST
LOS ANGELES, CA 90017
Los Angeles County (310) 491-7070
OCCUPATIONAL HEALTH CENTERS OF CALIFORNIA, A MEDICAL CORPORATION
Clinic/Center (Occupational Medicine)
814 FRANCISCO ST
LOS ANGELES, CA 90017
Los Angeles County (424) 331-0403
RYAN MATTHEW HOM PA-C
Physician Assistant
814 FRANCISCO ST
LOS ANGELES, CA 90017
Los Angeles County (310) 491-7070

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 Monthakan Ratnarathorn's NPI number?

The NPI number for Monthakan Ratnarathorn is 1326071762. It was assigned to this individual provider in the NPPES registry on July 9, 2006.

Where is Monthakan Ratnarathorn located?

Monthakan Ratnarathorn practices at 814 Francisco St, Los Angeles, CA 90017. The listed phone number is (310) 497-5774.

What is Monthakan Ratnarathorn's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Pediatric Orthopaedic Surgery, with taxonomy code 207XP3100X.

Is Monthakan Ratnarathorn enrolled in Medicare?

Yes. Monthakan Ratnarathorn is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Monthakan Ratnarathorn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Monthakan Ratnarathorn reassigns Medicare benefits to Southern California Permanente Medical Group (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 Monthakan Ratnarathorn'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 Monthakan Ratnarathorn was last updated on September 26, 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.