Dr. John Weijune Wang, MD
- Medicare services, 2024
- 610
- Medicare patients, 2024
- 290
- Part D claims, 2024
- 6,242
- Hospital affiliations
- 2
- Industry payments
- $2,867
- Practice address
- 18035 Brookhurst St, Fountain Valley, CA 92708
- Practice phone
- Call (877) 696-3622
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Memorialcare Medical Foundation
Fountain Valley, California
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 Weijune Wang is an internist in Fountain Valley, California
Dr. Wang practices at Memorialcare Medical Foundation in Fountain Valley, California.
Dr. Wang's NPI, 1720048291, was assigned on March 27, 2006. Dr. Wang graduated from University of Texas Medical School at San Antonio in 1999. Dr. Wang holds California license A73379.
- NPI
- 1720048291NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527950567
- NPI enumeration date
- March 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (877) 696-3622
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Weijune Wang practices at Memorialcare Medical Foundation in Fountain Valley, California
Dr. Wang's primary practice is Memorialcare Medical Foundation, at 18035 Brookhurst St, Fountain Valley, CA 92708 in Orange County. The practice phone is (877) 696-3622.
- Memorialcare Medical Foundation18035 Brookhurst St, Fountain Valley, CA 92708 · Orange CountyPhone(877) 696-3622
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Weijune Wang is affiliated with 6 sites of care and 1 medical group
Dr. Wang's primary practice is Memorialcare Medical Foundation in Fountain Valley, California. Dr. Wang is also affiliated with Orange Coast Medical Center. The medical group on file is MemorialCare Medical Group. Dmand AI also links Dr. Wang to 1 more hospital, 2 home health agencies and 1 group practice or clinic, 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 Weijune Wang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wang practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorialcare Medical Foundation | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Weijune 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. Dr. Wang is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
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 Weijune Wang billed Medicare for 610 services in 2024
CMS data shows 610 Medicare services from Dr. Wang across 10 procedure codes in 2024, for 290 Medicare patients. Medicare paid $34,669 for them.
Dr. Wang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3942024: 3784%
- Surgery
- 2023: 1422024: 1441%
- Tests and treatments
- 2023: 312024: 3719%
- Other services
- 2023: 172024: 37118%
- Imaging
- 2023: 122024: 1417%
Where Dr. Wang's Medicare services took place, 2024
- In an office50382%
- In a facility10718%
Dr. Wang compared with the California median for internists, 2024
- Dr. Wang
- California median
- Medicare services
- 610vs 36169% above
- Medicare patients
- 290vs 15192% above
- Part D claims
- 5,427vs 42112.9 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Wang and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Weijune Wang treated 290 Medicare patients in 2024, average age 75
CMS counts 290 Medicare patients who saw Dr. Wang in 2024. The largest group is 65 to 74, with 112 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 1.67, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Wang's median patient age at 60, with 47% women.
Dr. Wang's Medicare patients by age, 2024
Dr. Wang's Medicare patients by sex, 2024
- Women15553%
- Men13547%
Chronic conditions among Dr. Wang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis44%
- Diabetes34%
- Ischemic heart disease31%
- Mood disorders29%
- Chronic kidney disease28%
- Depression27%
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 60
Patient panel by sex, all payers
- Women47%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Weijune Wang wrote 6,242 Medicare Part D claims in 2024
In 2024, Dr. Wang wrote 6,242 Medicare Part D claims for 748 patients. 88% of them were for generic drugs. CMS names the drug for 5,427 of them, across 122 drugs with 11 or more claims each, at $375,363 in total drug cost. In 2023, CMS named 4,817 claims across 109 drugs.
Dr. Wang's Part D claims by kind of drug, 2024
- Generic5,495 claims88%
- Brand-name710 claims11%
- Other37 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
- Opioids3%176 of 6,242 claims
- Antibiotics3%210 of 6,242 claims
- Antipsychotics, patients 65 and over1%33 of 6,242 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: 4,8172024: 5,42713%
Drugs named by CMS: 122 in 2024, 109 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 Weijune Wang offers telehealth to Medicare patients
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
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. John Weijune Wang received $2,867 in industry payments from 2016 to 2025
CMS Open Payments shows 84 general payments to Dr. Wang from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 57% of the total. Edwards Lifesciences Corporation paid the most, $1,296.
General payments to Dr. Wang by program year, 2016 to 2025
General payments to Dr. Wang by kind, 2016 to 2025
- Food and beverage$1,62357%
- Travel and lodging$1,23243%
- Education$130%
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 Weijune Wang graduated from University of Texas Medical School at San Antonio
Dr. Wang graduated from University of Texas Medical School at San Antonio in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Weijune 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Weijune 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 Weijune Wang's NPI number?
Dr. John Weijune Wang's NPI number is 1720048291. It was assigned on March 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Weijune Wang?
Dr. John Weijune Wang is an internist in Fountain Valley, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John Weijune Wang practice?
Dr. Wang practices at 18035 Brookhurst St, Fountain Valley, CA 92708. Dr. Wang's primary practice is Memorialcare Medical Foundation in Fountain Valley, California. Dmand AI also links Dr. Wang to 1 hospital, 2 home health agencies and 1 group practice or clinic.
What is Dr. John Weijune Wang's office phone number?
The practice phone on file for Dr. Wang is (877) 696-3622.
What is Dr. John Weijune Wang's medical license number?
Dr. Wang holds California license A73379.
Which hospitals is Dr. John Weijune Wang affiliated with?
Dr. Wang is affiliated with Orange Coast Medical Center. Dmand AI links Dr. Wang to 1 more hospital.
What medical group is Dr. John Weijune Wang part of?
Dr. Wang is linked to MemorialCare Medical Group.
Does Dr. John Weijune Wang accept Medicare?
Yes. CMS data shows Dr. Wang billed Medicare for 610 services in 2024, and Dr. Wang accepts Medicare assignment.
Does Dr. John Weijune Wang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Wang as offering telehealth services.
How many Medicare patients does Dr. John Weijune Wang see?
CMS counts 290 Medicare patients who saw Dr. Wang in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. John Weijune Wang bill to Medicare?
In 2024, Dr. Wang's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and hospital inpatient care (99222).
Where did Dr. John Weijune Wang go to medical school?
Dr. Wang graduated from University of Texas Medical School at San Antonio in 1999.
What drugs does Dr. John Weijune 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. John Weijune Wang received payments from drug or device companies?
CMS Open Payments shows $2,867 in general payments to Dr. Wang from 24 companies from 2016 to 2025. The largest total came from Edwards Lifesciences Corporation.
How long has Dr. John Weijune Wang been practicing?
Dr. Wang graduated from medical school in 1999, 27 years ago.
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