Dr. John Wang, MD
- Medicare services, 2024
- 6,054
- Medicare patients, 2024
- 494
- Part D claims, 2024
- 8,380
- Publications
- 1
- MIPS score, 2024
- 81
- Practice address
- 1330 Wonder World Dr, San Marcos, TX 78666
- Practice phone
- Call (512) 901-4009
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The Austin Diagnostic Clinic
San Marcos, Texas
Find Dr. Wang's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John Wang is an internist in San Marcos, Texas
Dr. Wang practices at The Austin Diagnostic Clinic in San Marcos, Texas.
Dr. Wang's NPI, 1659639607, was assigned on April 27, 2012. Dr. Wang graduated from Heersink School of Medicine - Birmingham in 2010. Dr. Wang holds Texas license R7139.
- NPI
- 1659639607NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133343841
- NPI enumeration date
- April 27, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (512) 901-4009
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Wang practices at The Austin Diagnostic Clinic in San Marcos, Texas
Dr. Wang's primary practice is The Austin Diagnostic Clinic, at 1330 Wonder World Dr, San Marcos, TX 78666 in Hays County. The practice phone is (512) 901-4009.
- The Austin Diagnostic Clinic1330 Wonder World Dr, San Marcos, TX 78666 · Hays CountyPhone(512) 901-4009
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Wang is affiliated with 13 sites of care and 2 medical groups
Dr. Wang's primary practice is The Austin Diagnostic Clinic in San Marcos, Texas. Dr. Wang is also affiliated with St. David's Medical Center. The medical group on file is Austin Diagnostic Clinic. Dmand AI also links Dr. Wang to 4 more hospitals, 5 home health agencies, 1 physician office, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John Wang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wang practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Austin Diagnostic Clinic | Available with a free account |
| +12 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Wang is one of 8,437 internists in Texas
Internal medicine is Dr. Wang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Wang is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Wang's licenses on file in 5 states: Texas, California, Pennsylvania, Massachusetts and Ohio.
Specialties and state licenses
- Internal medicine, TexasPrimary
- California license
- Pennsylvania license
- Massachusetts license
- Ohio license
Clinical focus
Dmand AI lists acid reflux, acute gallbladder or bile duct inflammation, acute kidney failure, acute skin infection, adjustment disease, alcohol use disorders, alzheimer's disease and aneurysm 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.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Wang billed Medicare for 6,054 services in 2024
CMS data shows 6,054 Medicare services from Dr. Wang across 34 procedure codes in 2024, for 494 Medicare patients. Medicare paid $180,656 for them. Every service was in an office.
Dr. Wang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 2,1642024: 2,1252%
- Drugs given in the office
- 2023: 1,5002024: 1,98032%
- Office and hospital visits
- 2023: 9472024: 79116%
- Surgery
- 2023: 5782024: 52210%
- Other services
- 2023: 6422024: 51320%
- Tests and treatments
- 2023: 1232024: 10515%
- Imaging
- 2023: 132024: 1838%
Dr. Wang compared with the Texas median for internists, 2024
- Dr. Wang
- Texas median
- Medicare services
- 6,054vs 53911.2 times
- Medicare patients
- 494vs 1902.6 times
- Part D claims
- 7,737vs 28926.8 times
Medians across 7,794 internists in Texas 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.
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 Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Wang treated 494 Medicare patients in 2024, average age 77
CMS counts 494 Medicare patients who saw Dr. Wang in 2024. The largest group is 75 to 84, with 221 patients. 74% of them have high blood pressure, and 68% have high cholesterol. 3% are also on Medicaid. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Wang's median patient age at 70, with 39% women.
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
- Women19339%
- Men30161%
Chronic conditions among Dr. Wang's Medicare patients, 2024
- High blood pressure74%
- High cholesterol68%
- Arthritis43%
- Ischemic heart disease31%
- Diabetes28%
- Cancer21%
- Osteoporosis19%
- Atrial fibrillation18%
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 70
Patient panel by sex, all payers
- Women39%
- Men60%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Wang wrote 8,380 Medicare Part D claims in 2024
In 2024, Dr. Wang wrote 8,380 Medicare Part D claims for 848 patients. 89% of them were for generic drugs. CMS names the drug for 7,737 of them, across 112 drugs with 11 or more claims each, at $734,603 in total drug cost. In 2023, CMS named 7,834 claims across 112 drugs.
Dr. Wang's Part D claims by kind of drug, 2024
- Generic7,471 claims89%
- Brand-name898 claims11%
- Other11 claims0%
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
- Opioids1%82 of 8,380 claims
- Antibiotics2%131 of 8,380 claims
- Antipsychotics, patients 65 and over0%29 of 8,380 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: 7,8342024: 7,7371%
Drugs named by CMS: 112 in 2024, 112 in 2023.
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
Dr. John Wang scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Wang for performance year 2024, reported as part of a group. Dr. Wang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Wang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Wang's MIPS scores, performance year 2024
- 81of 100Final score
- 64.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John Wang has 1 publication on record
Dmand AI links 1 paper to Dr. Wang in 2009.
Recent publications by Dr. Wang
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.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John Wang received $3,598 in industry payments from 2016 to 2025
CMS Open Payments shows 192 general payments to Dr. Wang from 41 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Novo Nordisk Inc paid the most, $1,033.
General payments to Dr. Wang by program year, 2016 to 2025
General payments to Dr. Wang by kind, 2016 to 2025
- Food and beverage$3,57899%
- Education$191%
Companies that paid Dr. Wang the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Wang graduated from Heersink School of Medicine - Birmingham
Dr. Wang graduated from Heersink School of Medicine - Birmingham in 2010.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. John Wang accepts plans from 18 insurance carriers
Dr. Wang is in network with 18 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Cigna
- Alliant Health Plans
- Aspirus Health Plan
- HCSC
- +10 more carriersWith a free account
Plan types Dr. Wang accepts, by number of carriers
- HMO11
- PPO10
- Medicare6
- POS6
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. John Wang's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John 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. John Wang's NPI number?
Dr. John Wang's NPI number is 1659639607. It was assigned on April 27, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. John Wang?
Dr. John Wang is an internist in San Marcos, Texas. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John Wang practice?
Dr. Wang practices at 1330 Wonder World Dr, San Marcos, TX 78666. Dr. Wang's primary practice is The Austin Diagnostic Clinic in San Marcos, Texas. Dmand AI also links Dr. Wang to 4 hospitals, 5 home health agencies, 1 physician office, 1 group practice or clinic and 1 medical group.
What is Dr. John Wang's office phone number?
The practice phone on file for Dr. Wang is (512) 901-4009.
What is Dr. John Wang's medical license number?
Dr. Wang holds Texas license R7139, one of the licenses on file in 5 states.
Which states has Dr. John Wang been licensed in?
Dmand AI has state licenses on file for Dr. Wang in Texas (2018 to 2027), California (2016 to 2019), Pennsylvania (2006 to 2018), Massachusetts (2014 to 2015) and Ohio (2009 to 2015).
Which hospitals is Dr. John Wang affiliated with?
Dr. Wang is affiliated with St. David's Medical Center. Dmand AI links Dr. Wang to 4 more hospitals.
What medical group is Dr. John Wang part of?
Dr. Wang is linked to Austin Diagnostic Clinic. Dmand AI links Dr. Wang to 1 more medical group.
Does Dr. John Wang accept Medicare?
Yes. CMS data shows Dr. Wang billed Medicare for 6,054 services in 2024, and Dr. Wang accepts Medicare assignment.
Does Dr. John Wang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Wang as offering telehealth services.
Show 10 more questionsShow fewer questions
What is Dr. John Wang's MIPS score?
Dr. Wang's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Dr. John Wang see?
CMS counts 494 Medicare patients who saw Dr. Wang in 2024, with an average age of 77.
Is Dr. John Wang board certified?
Yes. Dr. Wang is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. John Wang bill to Medicare?
In 2024, Dr. Wang's most billed Medicare services were injected or infused drug (J0897), surgery: heart and blood vessels (36415) and office visit, established patient (99214).
Where did Dr. John Wang go to medical school?
Dr. Wang graduated from Heersink School of Medicine - Birmingham in 2010.
What drugs does Dr. John Wang prescribe most?
In 2024 Medicare Part D data, Dr. Wang's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Losartan Potassium.
Has Dr. John Wang received payments from drug or device companies?
CMS Open Payments shows $3,598 in general payments to Dr. Wang from 41 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. John Wang been practicing?
Dr. Wang graduated from medical school in 2010, 16 years ago.
Does Dr. John Wang do research?
Dmand AI links 1 publication to Dr. Wang.
What insurance does Dr. John Wang accept?
Dr. Wang is in network with 18 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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