Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DARLENE MULYANTO-MONG
NPI 1255873717
Nurse Practitioner - Acute Care in Orange, CA

Active since November 14, 2016PECOS Enrolled
101 THE CITY DR S, ORANGE, CA 92868(714) 456-7890 Get Directions Write a Review

NPPES record last updated: September 3, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 3, 2026, Aug 27, 2026, May 19, 2025 and 5 more (8 updates tracked since 2016).

About Darlene Mulyanto-mong NPPES

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

DARLENE MULYANTO-MONG (NPI 1255873717) is an individual acute care provider in Orange, California, licensed in California (95004975) and active in the NPI registry since November 2016. She is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1255873717
Entity TypeIndividualFemale
Primary Taxonomy363LA2100X
Provider Legal NameDARLENE MULYANTO-MONG
Location Address101 THE CITY DR SOrange, CA 92868-3201
Mailing Address1038 Oban DrLos Angeles, CA 90065-4257
Sole ProprietorNo
Enumeration DateNovember 14, 2016
Last NPPES UpdateSeptember 3, 20268 updates tracked since enumeration
NPPES CertifiedSeptember 3, 2026
✔ NPI 1255873717 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Acute CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2100X
License✔ Licensed in CA · 95004975
101 THE CITY DR S, Orange, CA 92868

Secondary Practice Locations 3

Location 12051 Marengo StLos Angeles, CA 90033-1352 · Phone (323) 409-1000
Location 214445 Olive View Dr, North AnnexSylmar, CA 91342-1437 · Phone (818) 364-1555
Location 31500 San Pablo StLos Angeles, CA 90033-5313 · Phone (800) 872-2273

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Darlene Mulyanto-mong 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

3

Medicare enrollment records show Darlene Mulyanto-mong reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Clinic/Center
10005 FLOWER ST
Bellflower, CA 90706
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: County Of Los Angeles
  • 1,939 clinicians in this Medicare group
General Practice
1520 SAN PABLO ST
Los Angeles, CA 90033
  • Reassigned Medicare billing, California enrollment
  • 2,445 clinicians in this Medicare group
Hospitalist
1420 S CENTRAL AVE
Glendale, CA 91204
  • Reassigned Medicare billing, California enrollment
  • 61 clinicians in this Medicare group

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
38 services38 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92868 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
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.

Radiology (Diagnostic Radiology)
101 THE CITY DR S
ORANGE, CA 92868
Obstetrics & Gynecology
101 THE CITY DR S, BUILDING 56, DEPARTMENT OF OB/GYN
ORANGE, CA 92868
Internal Medicine (Rheumatology)
101 THE CITY DR S
ORANGE, CA 92868
Plastic Surgery
101 THE CITY DR S
ORANGE, CA 92868
Emergency Medicine
101 THE CITY DR S, BUILDING 1A, ROOM 1009
ORANGE, CA 92868
Psychiatry & Neurology (Neurology)
101 THE CITY DR S, CITY TOWER, SUITE 400
ORANGE, CA 92868
Surgery (Trauma Surgery)
101 THE CITY DR S
ORANGE, CA 92868
Emergency Medicine
101 THE CITY DR S
ORANGE, CA 92868

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 Darlene Mulyanto-mong's NPI number?

The NPI number for Darlene Mulyanto-mong is 1255873717. It was assigned to this individual provider in the NPPES registry on November 14, 2016.

Where is Darlene Mulyanto-mong located?

Darlene Mulyanto-mong practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-7890.

What is Darlene Mulyanto-mong's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.

Is Darlene Mulyanto-mong enrolled in Medicare?

Yes. Darlene Mulyanto-mong is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Darlene Mulyanto-mong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Darlene Mulyanto-mong reassigns Medicare benefits to 3 organizations: County Of Los Angeles Auditor Controller (Bellflower, CA), Usc Care Medical Group, Inc (Los Angeles, CA) and Willow Brook Critical Care Medical Group, Inc (Glendale, 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 Darlene Mulyanto-mong'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 Darlene Mulyanto-mong was last updated on September 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 54 days 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.