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DR. MUN-WAH NG M.D.
NPI 1679740047
Pediatrics - Pediatric Gastroenterology in Fontana, CA

Active since May 14, 2008PECOS Enrolled
9961 SIERRA AVE, PEDS CLINIC MOB 2-2ND FLOOR, FONTANA, CA 92335(909) 427-5000 Get Directions Write a Review

NPPES record last updated: November 29, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Mun-wah Ng M.d. NPPES

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

DR. MUN-WAH NG M.D. (NPI 1679740047) is an individual pediatric gastroenterology provider in Fontana, California, licensed in California (A102446) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1679740047
Entity TypeIndividualMale
Primary Taxonomy2080P0206X
Provider Legal NameDR. MUN-WAH NGCredential: M.D.
Location Address9961 SIERRA AVE, PEDS CLINIC MOB 2-2ND FLOORFontana, CA 92335-6720
Mailing Address9961 Sierra Ave, Peds Clinic Mob 2-2nd FloorFontana, CA 92335-6720
Phone(909) 427-5000
Sole ProprietorNo
Enumeration DateMay 14, 2008
Last NPPES UpdateNovember 29, 2021
✔ NPI 1679740047 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0206X
License✔ Licensed in CA · A102446
Definition
A pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs.
9961 SIERRA AVE, Fontana, CA 92335
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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)

Dr. Mun-wah Ng 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 Mun-wah Ng reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
Same address
Health Maintenance Organization
9961 SIERRA AVE
Fontana, CA 92335
  • Reassigned Medicare billing, California enrollment
  • 5,228 clinicians in this Medicare group
NPI 1689606196 (909) 427-3910

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 92335 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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.

SHEILA ANN VANALLEN PT
Physical Therapist
9961 SIERRA AVE, BUILDING 3A
FONTANA, CA 92335
San Bernardino County (909) 427-7727
MR. JAMES DAVID KILLEEN III M.D.
Pediatrics
9961 SIERRA AVE, KAISER PERMANENTE FONTANA - PEDIATRICS
FONTANA, CA 92335
San Bernardino County (909) 427-6960
MR. DHIRESH N PATEL RPH
Pharmacist
9961 SIERRA AVE
FONTANA, CA 92335
San Bernardino County (909) 302-8018
JOSHUA MO MD
Pathology (Dermatopathology)
9961 SIERRA AVE
FONTANA, CA 92335
San Bernardino County (909) 427-5000
MS. STELLA MARIS CARLOS R.D.
Dietitian, Registered
9961 SIERRA AVE
FONTANA, CA 92335
San Bernardino County (909) 472-7185
KADETTE KELLY CRNA
Nurse Anesthetist, Certified Registered
9961 SIERRA AVE
FONTANA, CA 92335
San Bernardino County (909) 427-3910
YAEL STEINFELD NP
Nurse Practitioner
9961 SIERRA AVE
FONTANA, CA 92335
San Bernardino County (909) 427-3910
SCOTT SWARTZ NP
Nurse Practitioner
9961 SIERRA AVE
FONTANA, CA 92335
San Bernardino County (909) 427-3910

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 Mun-wah Ng's NPI number?

The NPI number for Mun-wah Ng is 1679740047. It was assigned to this individual provider in the NPPES registry on May 14, 2008.

Where is Mun-wah Ng located?

Mun-wah Ng practices at 9961 Sierra Ave Peds Clinic Mob 2-2nd Floor, Fontana, CA 92335. The listed phone number is (909) 427-5000.

What is Mun-wah Ng's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

Is Mun-wah Ng enrolled in Medicare?

Yes. Mun-wah Ng is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mun-wah Ng's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mun-wah Ng reassigns Medicare benefits to Southern California Permanente Medical Group (Fontana, 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 Mun-wah Ng'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 Mun-wah Ng was last updated on November 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.