Antigens, ProtozoanGenes, MHC Class IHLA Antigens
Dr. Rex T. Wang, MD
NPI1225109150PAC ID0749362507
- Part D claims, 2024
- 477
- Publications
- 2
- Industry payments
- $48
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 441 N Lakeview Ave, Anaheim, CA 92807
- Practice phone
- Call (714) 279-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Southern California Permanente Medical Group
Anaheim, California
Find Dr. Wang's professional email, personal email and mobile number
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Dr. Rex T. Wang is a gastroenterologist in Anaheim, California
Dr. Wang practices at Southern California Permanente Medical Group in Anaheim, California.
Dr. Wang's NPI, 1225109150, was assigned on November 13, 2006. Dr. Wang graduated from University Of Michigan Medical School in 2000. Dr. Wang holds California license A76544.
NPI and contact details
- NPI
- 1225109150NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749362507
- NPI enumeration date
- November 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 279-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rex T. Wang practices at Southern California Permanente Medical Group in Anaheim, California
Dr. Wang's primary practice is Southern California Permanente Medical Group, at 441 N Lakeview Ave, Anaheim, CA 92807 in Orange County. The practice phone is (714) 279-4000.
- Southern California Permanente Medical Group441 N Lakeview Ave, Anaheim, CA 92807 · Orange CountyPhone(714) 279-4000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Rex T. Wang is affiliated with 2 sites of care and 1 medical group
Dr. Wang's primary practice is Southern California Permanente Medical Group in Anaheim, California. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Wang to 1 more group practice or clinic, named with a free account.
Southern California Permanente Medical GroupPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Rex T. Wang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Southern California Permanente Medical Group | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rex T. Wang is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Wang's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Wang is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Wang is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Gastroenterologists near Dr. Wang
Counts of gastroenterologists 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. Rex T. Wang's patients have a median age of 61
Across all payers, Dmand AI patient panel data puts Dr. Wang's median patient age at 61, with 61% women.
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 61
Patient panel by sex, all payers
- Women61%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. Rex T. Wang wrote 477 Medicare Part D claims in 2024
In 2024, Dr. Wang wrote 477 Medicare Part D claims for 267 patients. 93% of them were for generic drugs. CMS names the drug for 382 of them, across 7 drugs with 11 or more claims each, at $22,892 in total drug cost. In 2023, CMS named 384 claims across 8 drugs.
Part D claims, 2024477
Drugs named by CMS7
Total drug cost$22,892
Part D patients267
Dr. Wang's Part D claims by kind of drug, 2024
- Generic443 claims93%
- Brand-name34 claims7%
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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3842024: 3821%
Drugs named by CMS: 7 in 2024, 8 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
How Dr. Rex T. Wang takes part in Medicare
Dr. Wang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 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. Rex T. Wang has 2 publications on record
Dmand AI links 2 papers to Dr. Wang. Dr. Wang's most frequent co-author is William Weiss, MD.
Papers2
Dr. Wang's most frequent co-authors
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 gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Rex T. Wang received $48 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Wang from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $48.
Companies that paid Dr. Wang the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Rex T. Wang has 1 award and honors on record
Dmand AI lists 1 award for Dr. Wang, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Wang
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Rex T. Wang graduated from University Of Michigan Medical School
Dr. Wang graduated from University Of Michigan Medical School in 2000.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Rex T. Wang accepts plans from 2 insurance carriers
Dr. Wang is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Wang accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Rex T. 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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Rex T. 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. Rex T. Wang's NPI number?
Dr. Rex T. Wang's NPI number is 1225109150. It was assigned on November 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Rex T. Wang?
Dr. Rex T. Wang is a gastroenterologist in Anaheim, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Rex T. Wang practice?
Dr. Wang practices at 441 N Lakeview Ave, Anaheim, CA 92807. Dr. Wang's primary practice is Southern California Permanente Medical Group in Anaheim, California. Dmand AI also links Dr. Wang to 1 group practice or clinic.
What is Dr. Rex T. Wang's office phone number?
The practice phone on file for Dr. Wang is (714) 279-4000.
What is Dr. Rex T. Wang's medical license number?
Dr. Wang holds California license A76544.
What medical group is Dr. Rex T. Wang part of?
Dr. Wang is linked to Southern California Permanente Medical Group.
Does Dr. Rex T. Wang accept Medicare?
Yes. CMS lists Dr. Wang as accepting Medicare assignment.
Is Dr. Rex T. Wang board certified?
Yes. Dr. Wang is board certified in gastroenterology by the American Board of Internal Medicine.
Where did Dr. Rex T. Wang go to medical school?
Dr. Wang graduated from University Of Michigan Medical School in 2000.
What drugs does Dr. Rex T. Wang prescribe most?
In 2024 Medicare Part D data, Dr. Wang's most prescribed drugs by claims were Gavilyte-C, Entecavir and Pantoprazole Sodium.
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Has Dr. Rex T. Wang received payments from drug or device companies?
CMS Open Payments shows $48 in general payments to Dr. Wang from 1 company from 2017 to 2017. The largest total came from Gilead Sciences, Inc.
How long has Dr. Rex T. Wang been practicing?
Dr. Wang graduated from medical school in 2000, 26 years ago.
Does Dr. Rex T. Wang do research?
Dmand AI links 2 publications to Dr. Wang.
Who does Dr. Rex T. Wang publish with?
Dr. Wang's most frequent co-authors are William Weiss, MD (1 shared paper).
What insurance does Dr. Rex T. Wang accept?
Dr. Wang is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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