Alexander Phillip Sung
Internal Medicine Physician · Pasadena, CA
Alexander Phillip Sung is an internal medicine physician with a practice address in Pasadena, California, and NPI 1255080891, issued on Mar 21, 2022. Check the license (California A187156, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alexander Phillip Sung
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A187156 CA
Self-reported in NPPES; status is on the state search - Practice location
- 625 S Fair Oaks Ave Ste 280, Pasadena, CA 91105
- Phone
- (626) 304-0070
- Enumerated
- Mar 21, 2022
- Record last updated
- Oct 1, 2025
- Medicare enrollment
- Enrolled (PECOS I20250820000425); accepts Medicare assignment
- Medical or professional school
- University Of Nevada School Of Medicine, 2022
- 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 625 S Fair Oaks Ave Ste 280
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alexander Phillip Sung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A187156Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
233 Medicare Part D claims for 50 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium28 claims
- Losartan Potassium18 claims
- Amlodipine Besylate16 claims
- Anastrozole14 claims
- Jardiance14 claims
- Gabapentin11 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
- The Regents OF The University OF CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Phillip Sung among 17,696 internal medicine physician records in California
Alexander Phillip Sung 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 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2022 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
137 internal medicine physician records list a practice address in Pasadena
They are 137 of the 10,525 NPPES records with a practice address in Pasadena, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Pasadena → Internal Medicine Physician nationwide →
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- George Jung, MDPasadena, CA 911051720051881
- Kristin Karlyn, MDPasadena, CA 911051033182530
- Malathi Narayan, MDPasadena, CA 911051588637466
Common questions
What is Alexander Phillip Sung's NPI number?
Alexander Phillip Sung's National Provider Identifier (NPI) is 1255080891, issued on Mar 21, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Phillip Sung located?
The NPPES record lists a practice address at 625 S Fair Oaks Ave Ste 280, Pasadena, CA, 91105. Phone: (626) 304-0070. Providers update this record themselves, so call before visiting.
How can I verify Alexander Phillip Sung's license?
NPPES lists California license number A187156, 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 Alexander Phillip Sung prescribe under Medicare Part D?
In 2024, Alexander Phillip Sung had 233 Medicare Part D claims for 50 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.