An Quoc Dang, M.D.
Nephrology Physician · Garden Grove, CA
An Quoc Dang, M.D. is a nephrology physician with a practice address in Garden Grove, California, and NPI 1952302564, issued on Aug 4, 2005. Check the license (California A65421, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- An Quoc Dang
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A65421 CA
Self-reported in NPPES; status is on the state search - Practice location
- 13872 Harbor Blvd, Garden Grove, CA 92843
- Phone
- (714) 531-5201
- Enumerated
- Aug 4, 2005
- Record last updated
- Mar 7, 2023
- Fax
- (714) 775-2849
- Medicaid ID
- 00A654210 CA
- Medicare enrollment
- Enrolled (PECOS I20120106000208); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 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.
- David Dang, M.D.Rheumatology Physician1932162385
- Christine NguyenPhysician Assistant1225826878
Verify An Quoc Dang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A65421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% more Medicare Part D claims than the average nephrology physician in 2024
2,252 Medicare Part D claims for 186 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Amlodipine Besylate189 claims
- Losartan Potassium138 claims
- Doxazosin Mesylate91 claims
- Atorvastatin Calcium89 claims
- Hydralazine Hcl81 claims
- Procrit81 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.
An Quoc Dang among 1,468 nephrology physician records in California
An Quoc Dang, M.D. is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1995 · median 2001 among the 1,128 with a school on file
- Record last updated2023 · 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 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Garden Grove → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Steve Bui, MDGarden Grove, CA 928431154390425
- Hong Kim, M.D.Garden Grove, CA 928431396727764
- Ramani Nathan, MDGarden Grove, CA 928431487623724
- Russell Ness, MDGarden Grove, CA 928431770552978
- Mital Patel, MDGarden Grove, CA 928431609223361
- Samir Patel, MDGarden Grove, CA 928431427519552
- Sridhar Reddy, M.D.Garden Grove, CA 928431780835447
- Peter Sohn, M.D.Garden Grove, CA 928431225579675
Common questions
What is An Quoc Dang, M.D.'s NPI number?
An Quoc Dang, M.D.'s National Provider Identifier (NPI) is 1952302564, issued on Aug 4, 2005. An NPI identifies a provider in billing; it is not a license.
Where is An Quoc Dang, M.D. located?
The NPPES record lists a practice address at 13872 Harbor Blvd, Garden Grove, CA, 92843. Phone: (714) 531-5201. Providers update this record themselves, so call before visiting.
How can I verify An Quoc Dang, M.D.'s license?
NPPES lists California license number A65421, 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 An Quoc Dang, M.D. prescribe under Medicare Part D?
In 2024, An Quoc Dang, M.D. had 2,252 Medicare Part D claims for 186 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.