Paul Soojin Chang, M.D.
Internal Medicine Physician · Buena Park, CA
Paul Soojin Chang, M.D. is an internal medicine physician with a practice address in Buena Park, California, and NPI 1487627261, issued on Feb 10, 2006. Check the license (California G077288, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Paul Soojin Chang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G077288 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5832 Beach Blvd Unit 214, Buena Park, CA 90621
- Phone
- (714) 523-7575
- Enumerated
- Feb 10, 2006
- Record last updated
- Feb 12, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (714) 523-7585
- Medicaid ID
- 00G772880 CA
- Medicare enrollment
- Enrolled (PECOS I20040817000874); accepts Medicare assignment
- Medical or professional school
- Chicago College Of Medicine And Surgery, 1992
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 5832 Beach Blvd Unit 214
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hoyune Cho, M.D.General Practice Physician1033504311
- Joel GalvanBehavior Analyst1114499050
- Richard Han, M.D.Internal Medicine Physician1821061466
- Hoon Hong, M.D.Internal Medicine Physician1790758647
- Soohyun KimPrimary Care Nurse Practitioner1275495921
Verify Paul Soojin Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G077288Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11.1 times the Medicare Part D claims of the average internal medicine physician in 2024
35,105 Medicare Part D claims for 1,695 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 28 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium2,883 claims
- Losartan Potassium2,384 claims
- Atorvastatin Calcium2,285 claims
- Amlodipine Besylate2,150 claims
- Metformin Hcl1,712 claims
- Tamsulosin Hcl997 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.
Industry payments in 2024: $2,573.83
122 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Friends Medical Group IncBuena Park, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Paul Soojin Chang among 17,696 internal medicine physician records in California
Paul Soojin Chang, M.D. 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1992 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 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).
13 internal medicine physician records list a practice address in Buena Park
They are 13 of the 728 NPPES records with a practice address in Buena Park, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Buena Park → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Edgardo Gonzalez, M.DBuena Park, CA 906211366514655
- Richard Han, M.D.Buena Park, CA 906211821061466
- Hoon Hong, M.D.Buena Park, CA 906211790758647
- Soo KangBuena Park, CA 906211164577706
- Tai-Won Kim, MDBuena Park, CA 906211487733754
- Sung Hyun Kim, M.DBuena Park, CA 906211447665369
- Felicia Tran, MDBuena Park, CA 906211225100753
- Victor Caluya, MDBuena Park, CA 906201467457101
Common questions
What is Paul Soojin Chang, M.D.'s NPI number?
Paul Soojin Chang, M.D.'s National Provider Identifier (NPI) is 1487627261, issued on Feb 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Paul Soojin Chang, M.D. located?
The NPPES record lists a practice address at 5832 Beach Blvd Unit 214, Buena Park, CA, 90621. Phone: (714) 523-7575. Providers update this record themselves, so call before visiting.
How can I verify Paul Soojin Chang, M.D.'s license?
NPPES lists California license number G077288, 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 Paul Soojin Chang, M.D. prescribe under Medicare Part D?
In 2024, Paul Soojin Chang, M.D. had 35,105 Medicare Part D claims for 1,695 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.