Dr. Mary Wang, MD

  • Rowland Heights, CA
  • Internist
NPI1669564811PAC ID9739113580
Medicare services, 2024
1,393
Medicare patients, 2024
166
Part D claims, 2024
6,148
Publications
4
Industry payments
$20,732
Practice address
18395 Colima Rd, Rowland Heights, CA 91748
Practice phone
Call (626) 964-1120
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Liu & Wang Medical Corp

Rowland Heights, California

See all 4 affiliations

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Dr. Mary Wang is an internist in Rowland Heights, California

Dr. Wang practices at Liu & Wang Medical Corp in Rowland Heights, California.

Dr. Wang's NPI, 1669564811, was assigned on September 28, 2006. Dr. Wang graduated from University Institute of Medicine 1 in 1991. Dr. Wang holds California license A61785.

NPI and contact details
Medicare PAC ID
9739113580
NPI enumeration date
September 28, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(626) 964-1120
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
61
Medical school graduation
1991

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Mary Wang practices at Liu & Wang Medical Corp in Rowland Heights, California

Dr. Wang's primary practice is Liu & Wang Medical Corp, at 18395 Colima Rd, Rowland Heights, CA 91748 in Los Angeles County. The practice phone is (626) 964-1120.

  • Liu & Wang Medical Corp
    18395 Colima Rd, Rowland Heights, CA 91748 · Los Angeles CountyPhone(626) 964-1120

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Mary Wang is affiliated with 3 sites of care and 1 medical group

Dr. Wang's primary practice is Liu & Wang Medical Corp in Rowland Heights, California. The medical group on file is Liu & Wang Medical Corp. Dmand AI also links Dr. Wang to 1 more group practice or clinic and 1 home health agency, each named with a free account.

See all 4 affiliations for Dr. Wang

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Mary Wang's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wang practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Liu & Wang Medical CorpAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Mary Wang is one of 16,751 internists in California

Internal medicine is Dr. Wang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Wang's licenses on file in 3 states: California, New York and Pennsylvania.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense A61785 · 1997 to 2026 · taxonomy 207R00000X
  • New York license1997 to 1999
  • Pennsylvania license1997 to 1998

Clinical focus

Dmand AI lists acid reflux, aneurysm, aortic atherosclerois, atrial fibrillation and flutter, bronchitis, chronic anemia, chronic diabetes and chronic hypertension among the conditions Dr. Wang treats.

Internists near Dr. Wang

Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.

16,751internists in California
8internists in Rowland Heights

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Mary Wang billed Medicare for 1,393 services in 2024

CMS data shows 1,393 Medicare services from Dr. Wang across 11 procedure codes in 2024, for 166 Medicare patients. Medicare paid $82,643 for them. Every service was in an office.

Medicare services, 20241,393
Medicare patients166
Paid by Medicare$82,643
Procedure codes11

Dr. Wang's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 8652024: 8215%
Other services
2023: 2882024: 39838%
Surgery
2023: 952024: 13037%
Tests and treatments
2023: 402024: 4410%

Dr. Wang compared with the California median for internists, 2024

  • Dr. Wang
  • California median
Medicare services
1,393vs 3613.9 times
Medicare patients
166vs 15110% above
Part D claims
5,503vs 42113.1 times

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Dr. Wang's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Wang

Need commercial claims for Dr. Wang?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Wang and other internists in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Mary Wang treated 166 Medicare patients in 2024, average age 76

CMS counts 166 Medicare patients who saw Dr. Wang in 2024. The largest group is 65 to 74, with 72 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 57% are also on Medicaid. Their average risk score is 1.17, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Wang's median patient age at 58, with 63% women.

Medicare patients, 2024166
Average age76
Average risk score1.17
Also on Medicaid57%

Dr. Wang's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Wang's Medicare patients by sex, 2024

  • Women11066%
  • Men5634%

Chronic conditions among Dr. Wang's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes61%
  4. Chronic kidney disease41%
  5. Arthritis40%
  6. Osteoporosis27%
  7. Ischemic heart disease21%
  8. Atrial fibrillation13%

Share of Medicare patients with each condition. A patient can have several.

Dr. Wang's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 58

Patient panel by sex, all payers

  • Women63%
  • Men36%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Mary Wang wrote 6,148 Medicare Part D claims in 2024

In 2024, Dr. Wang wrote 6,148 Medicare Part D claims for 401 patients. 79% of them were for generic drugs. CMS names the drug for 5,503 of them, across 94 drugs with 11 or more claims each, at $1,112,448 in total drug cost. In 2023, CMS named 5,474 claims across 98 drugs.

Part D claims, 20246,148
Drugs named by CMS94
Total drug cost$1.1M
Part D patients401

Dr. Wang's Part D claims by kind of drug, 2024

  • Generic4,867 claims79%
  • Brand-name1,212 claims20%
  • Other69 claims1%

Dr. Wang's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Wang's Part D claims, 2024

  • Antibiotics2%152 of 6,148 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 5,4742024: 5,5031%

Drugs named by CMS: 94 in 2024, 98 in 2023.

See all prescribing by Dr. Wang

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Mary Wang takes part in Medicare

Dr. Wang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Mary Wang has 4 publications on record

Dmand AI links 4 papers to Dr. Wang, published from 2019 to 2022. Dr. Wang's most frequent co-authors are Patricia Lynn Fontaine, MD and Karen T. Snider, DO.

Papers4
Years published2019 to 2022

Dr. Wang's most frequent co-authors

Recent publications by Dr. Wang

See all 4 publications and co-authors

See who Dr. Wang researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Wang works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Mary Wang received $20,732 in industry payments from 2016 to 2025

CMS Open Payments shows 745 general payments to Dr. Wang from 41 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $7,048.

General payments to Dr. Wang by program year, 2016 to 2025

General payments to Dr. Wang by kind, 2016 to 2025

$20.7Kin total
  • Food and beverage$20,716100%
  • Travel and lodging$170%

Companies that paid Dr. Wang the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Wang

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Mary Wang has 1 award and honors on record

Dmand AI lists 1 award for Dr. Wang, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Wang

  1. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Mary Wang graduated from University Institute of Medicine 1

Dr. Wang graduated from University Institute of Medicine 1 in 1991.

  1. Medical schoolUniversity Institute of Medicine 1

Source: Dmand AI Professional Profile Data

Dr. Mary Wang accepts plans from 15 insurance carriers

Dr. Wang is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Elevance
  • Alliant Health Plans
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Molina
  • +7 more carriersWith a free account

Plan types Dr. Wang accepts, by number of carriers

  1. PPO9
  2. Medicare8
  3. HMO6
  4. POS5
  5. EPO4

Source: Dmand AI Insurance Network Data

Sources for Dr. Mary Wang's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Mary Wang

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Mary Wang's NPI number?

Dr. Mary Wang's NPI number is 1669564811. It was assigned on September 28, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Mary Wang?

Dr. Mary Wang is an internist in Rowland Heights, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Mary Wang practice?

Dr. Wang practices at 18395 Colima Rd, Rowland Heights, CA 91748. Dr. Wang's primary practice is Liu & Wang Medical Corp in Rowland Heights, California. Dmand AI also links Dr. Wang to 1 group practice or clinic and 1 home health agency.

What is Dr. Mary Wang's office phone number?

The practice phone on file for Dr. Wang is (626) 964-1120.

What is Dr. Mary Wang's medical license number?

Dr. Wang holds California license A61785, one of the licenses on file in 3 states.

Which states has Dr. Mary Wang been licensed in?

Dmand AI has state licenses on file for Dr. Wang in California (1997 to 2026), New York (1997 to 1999) and Pennsylvania (1997 to 1998).

What medical group is Dr. Mary Wang part of?

Dr. Wang is linked to Liu & Wang Medical Corp.

Does Dr. Mary Wang accept Medicare?

Yes. CMS data shows Dr. Wang billed Medicare for 1,393 services in 2024, and Dr. Wang accepts Medicare assignment.

How many Medicare patients does Dr. Mary Wang see?

CMS counts 166 Medicare patients who saw Dr. Wang in 2024, with an average age of 76.

What services does Dr. Mary Wang bill to Medicare?

In 2024, Dr. Wang's most billed Medicare services were office visit, established patient (99213), care management and other visits (99497) and medicare service (G0439).

Show 7 more questionsShow fewer questions

Where did Dr. Mary Wang go to medical school?

Dr. Wang graduated from University Institute of Medicine 1 in 1991.

What drugs does Dr. Mary Wang prescribe most?

In 2024 Medicare Part D data, Dr. Wang's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.

Has Dr. Mary Wang received payments from drug or device companies?

CMS Open Payments shows $20,732 in general payments to Dr. Wang from 41 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.

How long has Dr. Mary Wang been practicing?

Dr. Wang graduated from medical school in 1991, 35 years ago.

Does Dr. Mary Wang do research?

Dmand AI links 4 publications to Dr. Wang, published from 2019 to 2022.

Who does Dr. Mary Wang publish with?

Dr. Wang's most frequent co-authors are Patricia Lynn Fontaine, MD (1 shared paper) and Karen T. Snider, DO (1 shared paper).

What insurance does Dr. Mary Wang accept?

Dr. Wang is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

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