Pauling Chang, MD
Therapeutic Radiology Physician · Sunnyvale, CA
Pauling Chang, MD is a therapeutic radiology physician with a practice address in Sunnyvale, California, and NPI 1194884692, issued on Dec 8, 2006. Check the license (California A55058, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Pauling Chang
- Credential
- MD
- Primary taxonomy
- Therapeutic Radiology Physician 2085R0203X
- License number
- A55058 CA
Self-reported in NPPES; status is on the state search - Practice location
- 301 Old San Francisco RD, Sunnyvale, CA 94086
- Phone
- (408) 730-2820
- Enumerated
- Dec 8, 2006
- Record last updated
- Feb 3, 2022
- Medicare enrollment
- Enrolled (PECOS I20080807000519); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest therapeutic radiology physician records → All 28 in California → Look up another NPI →
Also registered at 301 Old San Francisco RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Wafa Aljuneidi, MSN, APRN-NP, FNP-CNurse Practitioner1083583991
- Aisha AminInternal Medicine Physician1013440981
- Joyce Ang, MDPediatrics Physician1346634698
- Lulua Bahrainwala, MD, MSFamily Medicine Physician1568949709
Verify Pauling Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A55058Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average therapeutic radiology physician in 2024
31 Medicare Part D claims for 16 beneficiaries, against an average of 161 among the 108 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl12 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
- Sutter Bay Medical FoundationSunnyvale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Pauling Chang among 28 therapeutic radiology physician records in California
Pauling Chang, MD is one of 28 therapeutic radiology physician records with a practice address in California. 32% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 39% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileYes · 29% of these records are
- Record last updated2022 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0203X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Therapeutic Radiology Physician providers in California
There are 28 therapeutic radiology physician records in California.
All 28 in California → Every provider in Sunnyvale → Therapeutic Radiology Physician nationwide →
The 8 therapeutic radiology physician records with the nearest ZIP codes
- Richard Krieg, MDSan Francisco, CA 941151124062351
- Mack Roach, M.D.San Francisco, CA 941431770523359
- Patrick Welton, MDCarmel, CA 939211427644798
- Gordon Ray, MDPalo Alto, CA 943011265591770
- Don Goffinet, M.D.Palo Alto, CA 943041780724427
- Robert Johnson, M.D.San Luis Obispo, CA 934051598942781
- Owen Kim, M.D.Porterville, CA 932571861574352
- Henry Wong, M.D.Stockton, CA 952041376655431
Common questions
What is Pauling Chang, MD's NPI number?
Pauling Chang, MD's National Provider Identifier (NPI) is 1194884692, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Pauling Chang, MD located?
The NPPES record lists a practice address at 301 Old San Francisco RD, Sunnyvale, CA, 94086. Phone: (408) 730-2820. Providers update this record themselves, so call before visiting.
How can I verify Pauling Chang, MD's license?
NPPES lists California license number A55058, 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 Pauling Chang, MD prescribe under Medicare Part D?
In 2024, Pauling Chang, MD had 31 Medicare Part D claims for 16 beneficiaries; the average among therapeutic radiology physician prescribers was 161. 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.