David Dai Dang, M.D.
Rheumatology Physician · Garden Grove, CA
David Dai Dang, M.D. is a rheumatology physician with a practice address in Garden Grove, California, and NPI 1932162385, issued on Apr 7, 2006. Check the license (California A72475, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Dai Dang
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- A72475 CA
Self-reported in NPPES; status is on the state search - Practice location
- 13872 Harbor Blvd, Garden Grove, CA 92843
- Phone
- (714) 210-1300
- Enumerated
- Apr 7, 2006
- Record last updated
- Feb 14, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (714) 210-2123
- Medicare enrollment
- Enrolled (PECOS I20040511000639); accepts Medicare assignment
- Medical or professional school
- R Franklin University Of Med & Sci/Chicago Medical School, 1998
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 13872 Harbor Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- An Dang, M.D.Nephrology Physician1952302564
- Christine NguyenPhysician Assistant1225826878
Verify David Dai Dang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A72475Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.1 times the Medicare Part D claims of the average rheumatology physician in 2024
10,089 Medicare Part D claims for 925 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 767 claims were for opioids.
Most prescribed
- Gabapentin1,101 claims
- Celecoxib920 claims
- Famotidine818 claims
- Tramadol Hcl641 claims
- Methotrexate505 claims
- Diclofenac Sodium409 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: $6,056.51
220 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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.
David Dai Dang among 926 rheumatology physician records in California
David Dai Dang, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1998 · median 2003 among the 641 with a school on file
- Record last updated2012 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Garden Grove → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Michael Fabricant, M.D.Fullerton, CA 928351790771616
- Jay Kim, M.D.Fullerton, CA 928351811984123
- Michelle Ngo, DOFullerton, CA 928351760773014
- Shirley Pang, M.D.Fullerton, CA 928351457437626
- Shivani Patel, M.D.Fullerton, CA 928351487946364
- Michael Sugarman, M.D.Fullerton, CA 928351922094028
- Brian S Andrews, MDOrange, CA 928681609970292
- Ian Chang, D.O.Orange, CA 928681407116411
Common questions
What is David Dai Dang, M.D.'s NPI number?
David Dai Dang, M.D.'s National Provider Identifier (NPI) is 1932162385, issued on Apr 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Dai Dang, M.D. located?
The NPPES record lists a practice address at 13872 Harbor Blvd, Garden Grove, CA, 92843. Phone: (714) 210-1300. Providers update this record themselves, so call before visiting.
How can I verify David Dai Dang, M.D.'s license?
NPPES lists California license number A72475, 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 Dai Dang, M.D. prescribe under Medicare Part D?
In 2024, David Dai Dang, M.D. had 10,089 Medicare Part D claims for 925 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.