Charlie Huang, D.O.
Internal Medicine Physician · Tustin, CA
Charlie Huang, D.O. is an internal medicine physician with a practice address in Tustin, California, and NPI 1427591577, issued on Nov 21, 2016. Check the license (California 20A14941, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Charlie Huang
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A14941 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15000 Kensington Park Dr Ste 250, Tustin, CA 92782
- Phone
- (714) 477-8320
- Enumerated
- Nov 21, 2016
- Record last updated
- Sep 13, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180918002414); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 15000 Kensington Park Dr Ste 250
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eric Khau, MDInternal Medicine Physician1437654134
- Jonathan Lu, FNP-CFamily Medicine Physician1043796402
- Brian Ngo, DOFamily Medicine Physician1396372678
- Rukhsana Serang, D.O.Family Medicine Physician1780023754
Verify Charlie Huang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A14941Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% more Medicare Part D claims than the average internal medicine physician in 2024
5,542 Medicare Part D claims for 600 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 54 claims were for opioids.
Most prescribed
- Atorvastatin Calcium432 claims
- Amlodipine Besylate292 claims
- Rosuvastatin Calcium275 claims
- Losartan Potassium244 claims
- Levothyroxine Sodium203 claims
- Tamsulosin Hcl140 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.
Bills Medicare through one group practice
- Hoag ClinicIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charlie Huang among 17,696 internal medicine physician records in California
Charlie Huang, D.O. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2015 · median 2004 among the 11,065 with a school on file
- Record last updated2018 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
34 internal medicine physician records list a practice address in Tustin
They are 34 of the 2,221 NPPES records with a practice address in Tustin, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Tustin → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lisa Abdishoo, MDTustin, CA 927821881776326
- Robert Bader, MDTustin, CA 927821225111610
- Eric Khau, MDTustin, CA 927821437654134
- Don Oh, M.D.Tustin, CA 927821326247669
- Drumil Bhatt, MDTustin, CA 927801679033625
- Grace Chang Broderick, M.D.Tustin, CA 927801548525264
- Patrick Clarke, M.D.Tustin, CA 927801194015891
- Tariq Khan, M.D.Tustin, CA 927801295925253
Common questions
What is Charlie Huang, D.O.'s NPI number?
Charlie Huang, D.O.'s National Provider Identifier (NPI) is 1427591577, issued on Nov 21, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Charlie Huang, D.O. located?
The NPPES record lists a practice address at 15000 Kensington Park Dr Ste 250, Tustin, CA, 92782. Phone: (714) 477-8320. Providers update this record themselves, so call before visiting.
How can I verify Charlie Huang, D.O.'s license?
NPPES lists California license number 20A14941, 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 Charlie Huang, D.O. prescribe under Medicare Part D?
In 2024, Charlie Huang, D.O. had 5,542 Medicare Part D claims for 600 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.