DR. ALI GHASSAN DARWISH (MD) – Hospitalist Physician, NPI 1679079958
Hospitalist Physician
Main info
Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
Provider Addresses for DR. ALI GHASSAN DARWISH (MD)
361 HOSPITAL RD STE 521
NEWPORT BEACH, CA 926633526
Phone: (949) 873-6181
Type: Mailing
1 HOAG DR
NEWPORT BEACH, CA 926634162
Phone: (949) 873-6181
Fax: (949) 873-6181
Type: Location
400, Pepper Avenue, West Colton, Colton, San Bernardino County, California, 92324, United States
COLTON, CA 923241801
Phone: (909) 580-1000
Type: Mailing
16250 Sand Canyon Ave
Irvine, CA 926183714
Phone: (949) 873-6181
Fax: (949) 873-6181
Type: Location
400 N Pepper Ave
Colton, CA 923241801
Phone: (909) 580-1000
Type: Location
1880 N Orange Grove Ave
Pomona, CA 917673006
Phone: (909) 630-7158
Fax: (909) 630-7983
Type: Location
16200 Sand Canyon Ave
Irvine, CA 926183714
Phone: (949) 873-6181
Fax: (949) 873-6181
Type: Location
1798 N GAREY AVE
POMONA, CA 917672918
Phone: (909) 965-9500
Type: Mailing
1880 N ORANGE GROVE AVE
POMONA, CA 917673006
Phone: (909) 630-7158
Fax: (909) 630-7983
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $82.
Total Amount is formed as General ($82) + Research ($0) + Ownership ($0) = $82.
Last reported payment date: 2024-11-06 • Largest payer in this snapshot: Boehringer Ingelheim Pharmaceuticals, Inc. ($33).
Total Amount
$82
General + Research + Ownership
Payments
3
Total payment records
General Amount
$82
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-06
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2021-07-21
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20210721003007 | I | Hospitalist | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 218 | 77 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 173 | 172 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 75 | 75 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 30 | 18 | $0 |
Insurance plans in this area (ZIP 92663)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | WA | |
| Emergency Medicine | CA | |
| Emergency Medicine, General Practice, Undersea And Hyperbaric Medicine | CA | |
| General Practice | CA | |
| Emergency Medicine | CA | |
| Physician Assistant | CA | |
| Family Practice, Emergency Medicine, Critical Care (Intensivists) | CA | |
| Emergency Medicine | CA | |
| Family Practice, Emergency Medicine | CA | |
| General Surgery | CA |
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