Dr. Thomas Zarchy, MD
- Medicare services, 2019
- 47
- Part D claims, 2024
- 31
- Publications
- 1
- Hospital affiliations
- 1
- Industry payments
- $24
- Practice address
- 2051 Marengo St, Room C2K100, Los Angeles, CA 90033
- Practice phone
- Call (323) 226-2800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zarchy'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. Thomas Zarchy is a gastroenterologist in Los Angeles, California
Dr. Zarchy practices at Los Angeles General Medical Center in Los Angeles, California, part of County of Los Angeles.
Dr. Zarchy's NPI, 1477598027, was assigned on June 18, 2006. Dr. Zarchy graduated from George Washington University School of Medicine and Health Sciences in 1973. Dr. Zarchy's California license number on file is G36361.
- NPI
- 1477598027NPI Registry (opens in a new tab)
- NPI enumeration date
- June 18, 2006
- NPI status
- Active
- Practice phone
- (323) 226-2800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Thomas Zarchy practices at Los Angeles General Medical Center in Los Angeles, California
Dr. Zarchy's primary practice is Los Angeles General Medical Center, at 2051 Marengo St, Room C2K100, Los Angeles, CA 90033 in Los Angeles County. The practice phone is (323) 226-2800.
- Los Angeles General Medical Center2051 Marengo St, Room C2K100, Los Angeles, CA 90033 · Los Angeles CountyPhone(323) 226-2800
Source: Dmand AI Affiliation Data
Dr. Thomas Zarchy is affiliated with 2 sites of care and 1 medical group
Dr. Zarchy's primary practice is Los Angeles General Medical Center in Los Angeles, California, part of County of Los Angeles. The medical group on file is USC Care Medical Group. Dmand AI also links Dr. Zarchy to 1 more group practice or clinic, named with a free account. Dr. Zarchy's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thomas Zarchy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zarchy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Los Angeles General Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across County of Los Angeles and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Thomas Zarchy is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Zarchy's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Zarchy is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Zarchy's licenses on file in 3 states: California, Florida and Maryland.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
- Florida license
- Maryland license
Gastroenterologists near Dr. Zarchy
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. Thomas Zarchy billed Medicare for 47 services in 2019
CMS data shows 47 Medicare services from Dr. Zarchy across 3 procedure codes in 2019, all of them office visits. Medicare paid $2,638 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Zarchy's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 492019: 474%
Dr. Zarchy compared with the California median for gastroenterologists, 2019
- Dr. Zarchy
- California median
- Medicare services
- 47vs 58692% below
- Part D claims
- 17vs 38096% below
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Zarchy's most billed Medicare procedure codes, 2019
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. Zarchy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zarchy and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Zarchy's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Zarchy's median patient age at 58, with 50% women.
Dr. Zarchy'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
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Thomas Zarchy wrote 31 Medicare Part D claims in 2024
In 2024, Dr. Zarchy wrote 31 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 17 of them, across 1 drug with 11 or more claims each, at $437 in total drug cost. In 2019, CMS named 53 claims across 3 drugs.
Dr. Zarchy's most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 532020: 1768%
Drugs named by CMS: 1 in 2020, 3 in 2019.
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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Thomas Zarchy has 1 publication on record
Dmand AI links 1 paper to Dr. Zarchy.
Recent publications by Dr. Zarchy
See who Dr. Zarchy researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zarchy 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. Thomas Zarchy received $24 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Zarchy from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $24.
Companies that paid Dr. Zarchy the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Zarchy has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Zarchy, most recently AGA Fellow in 2006.
Awards and honors for Dr. Zarchy
- 2006
- AGA Fellow
- Undated
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. Thomas Zarchy graduated from George Washington University School of Medicine and Health Sciences
Dr. Zarchy graduated from George Washington University School of Medicine and Health Sciences in 1973. Dr. Zarchy is a member of ACG and AGA.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Thomas Zarchy accepts plans from 7 insurance carriers
Dr. Zarchy is in network with 7 carriers, including United Healthcare, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Regence Health Plans
- Aetna
- Wellmark Health Plan
Plan types Dr. Zarchy accepts, by number of carriers
- Medicare5
- PPO5
- HMO2
- EPO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas Zarchy'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 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) |
| 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. Thomas Zarchy
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. Thomas Zarchy's NPI number?
Dr. Thomas Zarchy's NPI number is 1477598027. It was assigned on June 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Zarchy?
Dr. Thomas Zarchy is a gastroenterologist in Los Angeles, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Thomas Zarchy practice?
Dr. Zarchy practices at 2051 Marengo St, Room C2K100, Los Angeles, CA 90033. Dr. Zarchy's primary practice is Los Angeles General Medical Center in Los Angeles, California, part of County of Los Angeles. Dmand AI also links Dr. Zarchy to 1 group practice or clinic.
What is Dr. Thomas Zarchy's office phone number?
The practice phone on file for Dr. Zarchy is (323) 226-2800.
What is Dr. Thomas Zarchy's medical license number?
Dr. Zarchy's California license number on file is G36361, one of the licenses on file in 3 states.
Which states has Dr. Thomas Zarchy been licensed in?
Dmand AI has state licenses on file for Dr. Zarchy in California (1978 to 2025), Florida (1976 to 1998) and Maryland (1976 to 1979).
Which hospitals is Dr. Thomas Zarchy affiliated with?
Dr. Zarchy practices at Los Angeles General Medical Center in Los Angeles, California.
What medical group is Dr. Thomas Zarchy part of?
Dr. Zarchy is linked to USC Care Medical Group.
Does Dr. Thomas Zarchy accept Medicare?
Yes. CMS data shows Dr. Zarchy billed Medicare for 47 services in 2019.
Is Dr. Thomas Zarchy board certified?
Yes. Dr. Zarchy is board certified in gastroenterology by the American Board of Internal Medicine.
Show 7 more questionsShow fewer questions
What services does Dr. Thomas Zarchy bill to Medicare?
In 2019, Dr. Zarchy's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, new patient (99203).
Where did Dr. Thomas Zarchy go to medical school?
Dr. Zarchy graduated from George Washington University School of Medicine and Health Sciences in 1973.
What drugs does Dr. Thomas Zarchy prescribe most?
In 2020 Medicare Part D data, Dr. Zarchy's most prescribed drugs by claims were Omeprazole.
Has Dr. Thomas Zarchy received payments from drug or device companies?
CMS Open Payments shows $24 in general payments to Dr. Zarchy from 1 company from 2023 to 2023. The largest total came from Abbvie Inc.
How long has Dr. Thomas Zarchy been practicing?
Dr. Zarchy graduated from medical school in 1973, 53 years ago.
Does Dr. Thomas Zarchy do research?
Dmand AI links 1 publication to Dr. Zarchy.
What insurance does Dr. Thomas Zarchy accept?
Dr. Zarchy is in network with 7 carriers, including United Healthcare, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
Selling to gastroenterology practices?
See gastroenterologists in California 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