Andrew Ng, MD
Internal Medicine Physician · Millbrae, CA
Andrew Ng, MD is an internal medicine physician with a practice address in Millbrae, California, and NPI 1871716910, issued on Apr 10, 2007. Check the license (California A107327, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andrew Ng
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A107327 CA
4301088587 MI
Self-reported in NPPES; status is on the state search - Practice location
- 423 Broadway, Millbrae, CA 94030
- Phone
- (650) 732-9721
- Enumerated
- Apr 10, 2007
- Entity
- Type 1 · individual
Also registered at 423 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Teklehaimanot Abraha, DNPFamily Nurse Practitioner1013441229
- Steven Chinn, D.P.M.Podiatrist1477619120
- Melissa Frederick, M.D.Internal Medicine Physician1033238076
Verify Andrew Ng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A107327Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
5.8 times the Medicare Part D claims of the average internal medicine physician in 2024
16,128 Medicare Part D claims for 518 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 191 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,249 claims
- Gabapentin726 claims
- Amlodipine Besylate700 claims
- Eliquis593 claims
- Furosemide513 claims
- Pantoprazole Sodium425 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's Medicare quality score for 2023: 73.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital or facility affiliation
- Acn Medical Group IncMillbrae, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
3 internal medicine physician records list a Millbrae practice address
They are 3 of the 164 NPPES records with a Millbrae practice address, and 20,403 internal medicine physician records in California.
All 3 in Millbrae → All 20,403 in California → Every provider in Millbrae →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Andrew Ng, MD's NPI number?
Andrew Ng, MD's National Provider Identifier (NPI) is 1871716910, issued on Apr 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Ng, MD located?
The NPPES record lists a practice address at 423 Broadway, Millbrae, CA, 94030. Phone: (650) 732-9721. Providers update this record themselves, so call before visiting.
How can I verify Andrew Ng, MD's license?
NPPES lists California license number A107327, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Andrew Ng, MD prescribe under Medicare Part D?
In 2024, Andrew Ng, MD had 16,128 Medicare Part D claims for 518 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
What is Andrew Ng, MD's Medicare quality score?
The 2023 MIPS final score is 73.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.