Nhung Thanh Quach, MD
Internal Medicine Physician · Santa Rosa, CA
Nhung Thanh Quach, MD is an internal medicine physician with a practice address in Santa Rosa, California, and NPI 1104484419, issued on Jun 1, 2019. Check the license (California 180572, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nhung Thanh Quach
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 180572 CA
4301506088 MI
Self-reported in NPPES; status is on the state search - Practice location
- 401 Bicentennial Way, Santa Rosa, CA 95403
- Phone
- (707) 393-4000
- Enumerated
- Jun 1, 2019
- Record last updated
- Oct 7, 2022
- Medicare enrollment
- Enrolled (PECOS I20221209000007); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 401 Bicentennial Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Ackerman, RNRegistered Nurse1376409409
- Patricia AdamsPhysical Therapist1124971825
- Hugo Aguilar, PHARMDPharmacist1992389134
- Heather Aiello, OTR/LOccupational Therapist1851155022
- Sandra Akrawi, REGISTERED DIETITIANRegistered Dietitian1790821031
- Miguel Alcala, LCSWClinical Social Worker1629857891
Verify Nhung Thanh Quach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 180572Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
370 Medicare Part D claims for 177 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Cefpodoxime Proxetil26 claims
- Amoxicillin-Clavulanate Potass20 claims
- Doxycycline Monohydrate17 claims
- Prednisone15 claims
- Oxycodone Hcl14 claims
- Atorvastatin Calcium12 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
- Permanente Medical Group IncSanta Rosa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nhung Thanh Quach among 17,696 internal medicine physician records in California
Nhung Thanh Quach, MD 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 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2005 · 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).
98 internal medicine physician records list a practice address in Santa Rosa
They are 98 of the 6,884 NPPES records with a practice address in Santa Rosa, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Santa Rosa → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Harry Carr, M.D.Santa Rosa, CA 954031770694044
- William Carroll, M.D.Santa Rosa, CA 954031922005891
- Lawrence Cooper, M.D.Santa Rosa, CA 954031801895602
- Zhen Zhou Feng, M.D.Santa Rosa, CA 954031871600031
- Timothy Gieseke, M.D.Santa Rosa, CA 954031992703706
- Archana Goyal, M.D.Santa Rosa, CA 954031811084817
- Parul Kohli, M.D.Santa Rosa, CA 954031023098738
- Maya Land, MDSanta Rosa, CA 954031619958154
Common questions
What is Nhung Thanh Quach, MD's NPI number?
Nhung Thanh Quach, MD's National Provider Identifier (NPI) is 1104484419, issued on Jun 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Nhung Thanh Quach, MD located?
The NPPES record lists a practice address at 401 Bicentennial Way, Santa Rosa, CA, 95403. Phone: (707) 393-4000. Providers update this record themselves, so call before visiting.
How can I verify Nhung Thanh Quach, MD's license?
NPPES lists California license number 180572, 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 Nhung Thanh Quach, MD prescribe under Medicare Part D?
In 2024, Nhung Thanh Quach, MD had 370 Medicare Part D claims for 177 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.