Dr. Daniel A. Ng, MD
Colorectal Surgery (Colon & Rectal Surgery Physician)
- Medicare participating
At a glance
- Years since graduation
- 32
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 585
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Colon & Rectal Surgery Physician primary
CA license G70052
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Hoag Memorial Hospital Presbyterian Newport Beach, CA
Medical groups
- Hoag Clinic (460 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 585
- Services billed
- 1,639
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| Diagnostic exam of anus using an endoscope | 442 | 391 |
| Established patient office or other outpatient visit, 20-29 minutes | 269 | 188 |
| New patient office or other outpatient visit, 45-59 minutes | 190 | 190 |
| Established patient office or other outpatient visit, 30-39 minutes | 181 | 166 |
| Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery | 180 | 179 |
| Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 155 | 155 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 110 | 109 |
| Established patient office or other outpatient visit, 10-19 minutes | 105 | 85 |
| New patient office or other outpatient visit, 30-44 minutes | 78 | 78 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 71 | 24 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Potassium Chloride Other prescribers in Newport Beach, CA | 184 |
| Erythromycin (erythromycin base) Other prescribers in Newport Beach, CA | 30 |
| Neomycin Sulfate | 30 |
| Prochlorperazine Maleate Other prescribers in Newport Beach, CA | 29 |
| Sutab (sod sulf/pot chloride/mag sulf) | 24 |
| Sod Sulf-Potass Sulf-Mag Sulf (sodium, potassium,mag sulfates) Other prescribers in Newport Beach, CA | 16 |
| Hydrocodone-Acetaminophen (hydrocodone/acetaminophen) Other prescribers in Newport Beach, CA | 11 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 3 companies reported 3 payments worth $152 in total to this clinician.
| Merck Sharp & Dohme LLC | $78.44 |
|---|---|
| Madrigal Pharmaceuticals | $43.15 |
| Lilly USA, LLC | $30.41 |
| Food and Beverage | $152 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.