Dr. John Wang, MD

  • San Marcos, TX
  • Internist
NPI1659639607PAC ID9133343841
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
Social profiles

Primary practice

The Austin Diagnostic Clinic

San Marcos, Texas

See all 15 affiliations

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.

View contacts for free

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 and contact details
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 Clinic
    1330 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.

See all 15 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. 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.

EHR by site
SiteEHR vendor and product
The Austin Diagnostic ClinicAvailable with a free account
+12 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every site where Dr. Wang practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.

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, TexasPrimaryLicense R7139 · 2018 to 2027 · taxonomy 207R00000X
  • California licenseLicense 142039 · 2016 to 2019
  • Pennsylvania license2006 to 2018
  • Massachusetts license2014 to 2015
  • Ohio license2009 to 2015

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.

Medicare services, 20246,054
Medicare patients494
Paid by Medicare$180,656
Procedure codes34

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.

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 Texas.

Book a meeting

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.

Medicare patients, 2024494
Average age77
Average risk score1.08
Also on Medicaid3%

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

  1. High blood pressure74%
  2. High cholesterol68%
  3. Arthritis43%
  4. Ischemic heart disease31%
  5. Diabetes28%
  6. Cancer21%
  7. Osteoporosis19%
  8. 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.

Part D claims, 20248,380
Drugs named by CMS112
Total drug cost$734,603
Part D patients848

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.

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

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

For MedTech and pharma teams

Find internists like Dr. Wang by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Dr. John Wang has 1 publication on record

Dmand AI links 1 paper to Dr. Wang in 2009.

Papers1

Recent publications by Dr. Wang

See all 1 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. 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

$3.6Kin total
  • 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.

See all payments to Dr. Wang

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.

  1. Medical schoolHeersink School of Medicine - Birmingham
  2. Board certified in internal medicineAmerican Board of 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.

Plan types Dr. Wang accepts, by number of carriers

  1. HMO11
  2. PPO10
  3. Medicare6
  4. POS6
  5. EPO4

Source: Dmand AI Insurance Network Data

Sources for Dr. John 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)Clinician Public Reporting: Overall MIPS Performance (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)
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. 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.

Selling to internal medicine practices?

See internists in Texas by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)