David Thanh Dang, M.D.
Internal Medicine Physician · Pasadena, CA
David Thanh Dang, M.D. is an internal medicine physician with a practice address in Pasadena, California, and NPI 1316359581, issued on May 22, 2014. Check the license (California A133218, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Thanh Dang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A133218 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1044 S Fair Oaks Ave Ste 101, Pasadena, CA 91105
- Phone
- (626) 344-0640
- Enumerated
- May 22, 2014
- Record last updated
- Apr 8, 2022
- Fax
- (888) 658-9881
- Medicare enrollment
- Enrolled (PECOS I20151104000119); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 2013
- 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 1044 S Fair Oaks Ave Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrew SingletonSurgical Critical Care Physician1639312663
Verify David Thanh Dang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A133218Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% fewer Medicare Part D claims than the average internal medicine physician in 2024
3,067 Medicare Part D claims for 234 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 33 claims were for opioids.
Most prescribed
- Losartan Potassium192 claims
- Atorvastatin Calcium183 claims
- Rosuvastatin Calcium169 claims
- Amlodipine Besylate141 claims
- Levothyroxine Sodium128 claims
- Metformin Hcl80 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: $271.43
7 payments; by number, the most common kind was food and beverage; the largest payer was Teleflex LLC. 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
- Southern California Hospitalist Network Medical Group IncOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Thanh Dang among 17,696 internal medicine physician records in California
David Thanh Dang, 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 2014, is newer than 74% of them.
- NPI issued2014 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2013 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 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 →
The 8 internal medicine physician records with the nearest ZIP codes
- Dolores Barba, MDPasadena, CA 911051992700603
- Barry Blum, MDPasadena, CA 911051639141716
- Betsy Felser, MDPasadena, CA 911051144292897
- Todd Hee, M.D.Pasadena, CA 911051689648693
- Wei Huang-Lee, MDPasadena, CA 911051972576841
- George Jung, MDPasadena, CA 911051720051881
- Kristin Karlyn, MDPasadena, CA 911051033182530
- Malathi Narayan, MDPasadena, CA 911051588637466
Common questions
What is David Thanh Dang, M.D.'s NPI number?
David Thanh Dang, M.D.'s National Provider Identifier (NPI) is 1316359581, issued on May 22, 2014. An NPI identifies a provider in billing; it is not a license.
Where is David Thanh Dang, M.D. located?
The NPPES record lists a practice address at 1044 S Fair Oaks Ave Ste 101, Pasadena, CA, 91105. Phone: (626) 344-0640. Providers update this record themselves, so call before visiting.
How can I verify David Thanh Dang, M.D.'s license?
NPPES lists California license number A133218, 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 David Thanh Dang, M.D. prescribe under Medicare Part D?
In 2024, David Thanh Dang, M.D. had 3,067 Medicare Part D claims for 234 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.