DR. ALI GHASSAN DARWISH MD
NPI 1679079958
Hospitalist in Newport Beach, CA
About Dr. Ali Ghassan Darwish Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALI GHASSAN DARWISH MD (NPI 1679079958) is an individual hospitalist provider in Newport Beach, California, licensed in California (A173308) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, maintains 4 additional practice locations, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 4
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Ali Ghassan Darwish Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Ali Darwish reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newport Beach, CA 92663
- Reassigned Medicare billing, California enrollment
- 105 clinicians in this Medicare group
Anaheim, CA 92807
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Montebello, CA 90640
- Reassigned Medicare billing, California enrollment
- 962 clinicians in this Medicare group
Colton, CA 92324
- Reassigned Medicare billing, California enrollment
- 338 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 27 clinicians in this Medicare group
- Reassigned Medicare billing, California enrollment
- 37 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92663 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
NEWPORT BEACH, CA 92663
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 Ali Darwish's NPI number?
The NPI number for Ali Darwish is 1679079958. It was assigned to this individual provider in the NPPES registry on April 4, 2018.
Where is Ali Darwish located?
Ali Darwish practices at 1 Hoag Dr, Newport Beach, CA 92663. The listed phone number is (949) 873-6181.
What is Ali Darwish's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Ali Darwish enrolled in Medicare?
Yes. Ali Darwish is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ali Darwish's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ali Darwish reassigns Medicare benefits to 6 organizations: Pacific Hospitalist Associates A Medical Corporation (Newport Beach, CA), Southern California Permanente Medical Group (Anaheim, CA), Galen Inpatient Physicians PC (Montebello, CA), Quantum Healthcare Medical Associates Inc. (Colton, CA), Medamerica Physician Solutions PC (Walnut Creek, CA) and 1 more organization, listed in the Medicare section above. 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 Ali Darwish'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 Ali Darwish was last updated on April 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Ali Ghassan Darwish, MD · NPI 1679079958
Hospitalist physician in Newport Beach, California. Individual provider, active in the CMS NPPES registry since April 4, 2018.
## Identity
- **NPI:** 1679079958 (Entity type: Individual)
- **Enumerated:** April 4, 2018
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** A173308 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1 HOAG DR, Newport Beach, CA 92663-4162
- **Phone:** (949) 873-6181 · **Fax:** (949) 873-6181
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Pacific Hospitalist Associates A Medical Corporation (NPI 1992750137, Newport Beach, CA); Southern California Permanente Medical Group (NPI 1952333460, Anaheim, CA); Galen Inpatient Physicians PC (NPI 1114703006, Montebello, CA); Quantum Healthcare Medical Associates Inc. (NPI 1568490597, Colton, CA); Medamerica Physician Solutions PC (NPI 1487237111, Walnut Creek, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** April 26, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1679079958) · Data from the CMS NPPES public registry.