1. Home
  2. Directory
  3. California
  4. Merced
  5. Pediatrics
  6. NPI Profile

DR. RUNGTIWA WEERASETHSIRI M.D.
NPI 1093951444
Pediatrics in Merced, CA

Active since January 06, 2009PECOS Enrolled
700 W OLIVE AVE STE D, MERCED, CA 95348(209) 383-1343(209) 383-5291 Get Directions Write a Review

NPPES record last updated: June 7, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Rungtiwa Weerasethsiri M.d. NPPES

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

DR. RUNGTIWA WEERASETHSIRI M.D. (NPI 1093951444) is an individual pediatrics provider in Merced, California, licensed in California (A106684) and active in the NPI registry since January 2009. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1093951444
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. RUNGTIWA WEERASETHSIRICredential: M.D.
Location Address700 W OLIVE AVE STE DMerced, CA 95348-2435
Mailing Address700 W Olive Ave Ste DMerced, CA 95348-2435 · (209) 383-1343 · Fax (209) 383-5291
Phone(209) 383-1343
Fax(209) 383-5291
Sole ProprietorNo
Enumeration DateJanuary 6, 2009
Last NPPES UpdateJune 7, 2014
✔ NPI 1093951444 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A106684
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
700 W OLIVE AVE STE D, Merced, CA 95348
Open in Google Maps ↗

Other Identifiers 1

Medicaid1093951444CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Rungtiwa Weerasethsiri 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 Reassignments

2

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

Valley Children's Medical Group
37 mi
Pediatrics
1524 MCHENRY AVE, SUITE 550
Modesto, CA 95350
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Valley Childrens Medical Group
  • 387 clinicians in this Medicare group
NPI 1437555265 (559) 353-5010
Valley Children's Specialty Medical Group, Inc.
48 mi
Pediatrics
9300 VALLEY CHILDRENS PL
Madera, CA 93636
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Valley Childrens Specialty Medical Group Inc
  • 63 clinicians in this Medicare group
NPI 1013968296 (559) 353-5700

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2084463

Rungtiwa Weerasethsiri, MD · Merced, CA
Expired · Sep 23, 2026
CLIA Number05D2084463
Laboratory TypePhysician Office
Certificate Effective DateSeptember 24, 2024
Certificate Expiration DateSeptember 23, 2026
Laboratory DirectorRungtiwa Weerasethsiri, MD
Laboratory Phone(209) 383-1343
Laboratory LocationRungtiwa Weerasethsiri, MD700 W Olive Ave Ste D, Merced, CA 95348
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95348 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
$90.32 typical visit price
range $58.87 – $176.60
Typical copayment $22.58 (range $14.71 – $44.15)
Most-billed visit code 99203
Established Patient
$103.36 typical visit price
range $19.28 – $144.60
Typical copayment $25.84 (range $4.82 – $36.15)
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 2

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

RUNGTIWA WEERASETHSIRI M.D.
Clinic/Center (Primary Care)
700 W OLIVE AVE STE D
MERCED, CA 95348
Merced County (209) 383-1343
PAUL C. TSAI M.D. & DOLORES O. TAN INC.
Obstetrics & Gynecology
700 W OLIVE AVE STE D
MERCED, CA 95348
Merced County (209) 383-5291

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 Rungtiwa Weerasethsiri's NPI number?

The NPI number for Rungtiwa Weerasethsiri is 1093951444. It was assigned to this individual provider in the NPPES registry on January 6, 2009.

Where is Rungtiwa Weerasethsiri located?

Rungtiwa Weerasethsiri practices at 700 W Olive Ave Ste D, Merced, CA 95348. The listed phone number is (209) 383-1343.

What is Rungtiwa Weerasethsiri's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Rungtiwa Weerasethsiri enrolled in Medicare?

Yes. Rungtiwa Weerasethsiri is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Rungtiwa Weerasethsiri's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rungtiwa Weerasethsiri reassigns Medicare benefits to 2 organizations: Valley Children's Medical Group (Modesto, CA) and Valley Children's Specialty Medical Group, Inc. (Madera, CA). 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 Rungtiwa Weerasethsiri'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 Rungtiwa Weerasethsiri was last updated on June 7, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.