Dr. John Gettys McCarthy, MD, MS
- Industry payments
- $75
- State license
- 1
- Year NPI issued
- 2012
- Practice address
- 8901 Rockville Pike, Bethesda, MD 20889
- Practice phone
- Call (301) 295-4934
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Walter Reed National Military Medical Center
Bethesda, Maryland
Find Dr. McCarthy'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 Gettys McCarthy is a gastroenterologist in Bethesda, Maryland
Dr. McCarthy practices at Walter Reed National Military Medical Center in Bethesda, Maryland.
Dr. McCarthy's NPI, 1508129677, was assigned on June 22, 2012. Dr. McCarthy holds Hawaii license MD-17464.
- NPI
- 1508129677NPI Registry (opens in a new tab)
- NPI enumeration date
- June 22, 2012
- NPI status
- Active
- Practice phone
- (301) 295-4934
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. John Gettys McCarthy practices at Walter Reed National Military Medical Center in Bethesda, Maryland
Dr. McCarthy's primary practice is Walter Reed National Military Medical Center, at 8901 Rockville Pike, Bethesda, MD 20889 in Montgomery County. The practice phone is (301) 295-4934.
- Walter Reed National Military Medical Center8901 Rockville Pike, Bethesda, MD 20889 · Montgomery CountyPhone(301) 295-4934
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Gettys McCarthy is affiliated with 1 site of care
Dr. McCarthy's primary practice is Walter Reed National Military Medical Center in Bethesda, Maryland.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John Gettys McCarthy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McCarthy practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Walter Reed National Military Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Gettys McCarthy is one of 405 gastroenterologists in Maryland
Gastroenterology is Dr. McCarthy's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. McCarthy is licensed in Hawaii.
Specialties and state licenses
- Gastroenterology, HawaiiPrimary
Gastroenterologists near Dr. McCarthy
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. John Gettys McCarthy's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. McCarthy's median patient age at 73, with 43% women.
Dr. McCarthy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women43%
- Men57%
Source: Dmand AI Patient Panel Data
Dr. John Gettys McCarthy received $75 in industry payments from 2023 to 2025
CMS Open Payments shows 3 general payments to Dr. McCarthy from 3 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Bausch Health Americas, Inc. paid the most, $29.
General payments to Dr. McCarthy by program year, 2023 to 2025
Companies that paid Dr. McCarthy the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Gettys McCarthy'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 Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Gettys McCarthy
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What is Dr. John Gettys McCarthy's NPI number?
Dr. John Gettys McCarthy's NPI number is 1508129677. It was assigned on June 22, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. John Gettys McCarthy?
Dr. John Gettys McCarthy is a gastroenterologist in Bethesda, Maryland. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. John Gettys McCarthy practice?
Dr. McCarthy practices at 8901 Rockville Pike, Bethesda, MD 20889. Dr. McCarthy's primary practice is Walter Reed National Military Medical Center in Bethesda, Maryland.
What is Dr. John Gettys McCarthy's office phone number?
The practice phone on file for Dr. McCarthy is (301) 295-4934.
What is Dr. John Gettys McCarthy's medical license number?
Dr. McCarthy holds Hawaii license MD-17464.
Has Dr. John Gettys McCarthy received payments from drug or device companies?
CMS Open Payments shows $75 in general payments to Dr. McCarthy from 3 companies from 2023 to 2025. The largest total came from Bausch Health Americas, Inc.
How long has Dr. John Gettys McCarthy been practicing?
Dr. McCarthy's NPI was assigned in 2012.
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