Mary Wang, MD
Internal Medicine Physician · Rowland Heights, CA
Mary Wang, MD is an internal medicine physician with a practice address in Rowland Heights, California, and NPI 1669564811, issued on Sep 28, 2006. Check the license (California A61785, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mary Wang
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A61785 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18395 Colima RD, Rowland Heights, CA 91748
- Phone
- (626) 964-1120
- Enumerated
- Sep 28, 2006
- Record last updated
- Feb 9, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (626) 964-0590
- Medicare enrollment
- Enrolled (PECOS I20110518000734); 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 18395 Colima RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jiamin Lin, NPFamily Nurse Practitioner1396540407
- Zune Liu, MDInternal Medicine Physician1619069838
Verify Mary Wang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A61785Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% more Medicare Part D claims than the average internal medicine physician in 2024
6,148 Medicare Part D claims for 401 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Atorvastatin Calcium705 claims
- Amlodipine Besylate439 claims
- Losartan Potassium370 claims
- Metformin Hcl310 claims
- Alendronate Sodium209 claims
- Vascepa166 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: $2,295.57
56 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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
- Liu And Wang Medical CorpRowland Heights, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Wang among 17,696 internal medicine physician records in California
Mary Wang, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1991 · median 2004 among the 11,065 with a school on file
- Record last updated2012 · 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).
9 internal medicine physician records list a practice address in Rowland Heights
They are 9 of the 816 NPPES records with a practice address in Rowland Heights, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Rowland Heights → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Wei Bao, M.D.City Of Industry, CA 917481437199304
- Kuo Hsien Chang, MDRowland Heights, CA 917481851392922
- Yongqing Feng, M.D.Rowland Heights, CA 917481497806988
- John Lee, MDFullerton, CA 917481598721284
- Zune Liu, MDRowland Heights, CA 917481619069838
- Jason Paek, M.D.Rowland Heights, CA 917481770679631
- Rosel Liza Reyes, M.D.Rowland Heights, CA 917481285886978
- Chia-Yu Teng, M.D.City Of Industry, CA 917481902839160
Common questions
What is Mary Wang, MD's NPI number?
Mary Wang, MD's National Provider Identifier (NPI) is 1669564811, issued on Sep 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Wang, MD located?
The NPPES record lists a practice address at 18395 Colima RD, Rowland Heights, CA, 91748. Phone: (626) 964-1120. Providers update this record themselves, so call before visiting.
How can I verify Mary Wang, MD's license?
NPPES lists California license number A61785, 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 Mary Wang, MD prescribe under Medicare Part D?
In 2024, Mary Wang, MD had 6,148 Medicare Part D claims for 401 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.