Dr. Charles I. Oh, MD
- Part D claims, 2023
- 81
- Industry payments
- $543
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 4601 Ironbound Rd, Williamsburg, VA 23188
- Practice phone
- Call (757) 253-5241
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Eastern State Hospital
Behavioral health practice · Williamsburg, Virginia
Find Dr. Oh'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. Charles I. Oh is an internist in Williamsburg, Virginia
Dr. Oh practices at Eastern State Hospital in Williamsburg, Virginia.
Dr. Oh's NPI, 1245213024, was assigned on November 25, 2005. Dr. Oh holds Virginia license 0101222286.
- NPI
- 1245213024NPI Registry (opens in a new tab)
- NPI enumeration date
- November 25, 2005
- NPI status
- Active
- Practice phone
- (757) 253-5241
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles I. Oh practices at Eastern State Hospital in Williamsburg, Virginia
Dr. Oh's primary practice is Eastern State Hospital, at 4601 Ironbound Rd, Williamsburg, VA 23188. The practice phone is (757) 253-5241.
- Eastern State Hospital4601 Ironbound Rd, Williamsburg, VA 23188Phone(757) 253-5241
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles I. Oh is affiliated with 1 site of care and 1 medical group
Dr. Oh's primary practice is Eastern State Hospital in Williamsburg, Virginia. Dmand AI also links Dr. Oh to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Charles I. Oh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oh practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Eastern State Hospital | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Charles I. Oh is one of 3,339 internists in Virginia
Internal medicine is Dr. Oh's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Oh is licensed in Virginia.
Specialties and state licenses
- Internal medicine, VirginiaPrimary
Internists near Dr. Oh
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. Charles I. Oh's patients have a median age of 83
Across all payers, Dmand AI patient panel data puts Dr. Oh's median patient age at 83, with 0% women.
Dr. Oh's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 83
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Charles I. Oh wrote 81 Medicare Part D claims in 2023
In 2023, Dr. Oh wrote 81 Medicare Part D claims. Every claim was for a generic drug. They cover 5 drugs, with $523 in total drug cost. In 2022, CMS named 263 claims across 15 drugs.
Dr. Oh's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 2632023: 8169%
Drugs named by CMS: 5 in 2023, 15 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Charles I. Oh received $543 in industry payments from 2016 to 2025
CMS Open Payments shows 22 general payments to Dr. Oh from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $181.
General payments to Dr. Oh by program year, 2016 to 2025
Companies that paid Dr. Oh the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Charles I. Oh'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| 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. Charles I. Oh
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. Charles I. Oh's NPI number?
Dr. Charles I. Oh's NPI number is 1245213024. It was assigned on November 25, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles I. Oh?
Dr. Charles I. Oh is an internist in Williamsburg, Virginia. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Charles I. Oh practice?
Dr. Oh practices at 4601 Ironbound Rd, Williamsburg, VA 23188. Dr. Oh's primary practice is Eastern State Hospital in Williamsburg, Virginia. Dmand AI also links Dr. Oh to 1 medical group.
What is Dr. Charles I. Oh's office phone number?
The practice phone on file for Dr. Oh is (757) 253-5241.
What is Dr. Charles I. Oh's medical license number?
Dr. Oh holds Virginia license 0101222286.
What drugs does Dr. Charles I. Oh prescribe most?
In 2023 Medicare Part D data, Dr. Oh's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Levothyroxine Sodium.
Has Dr. Charles I. Oh received payments from drug or device companies?
CMS Open Payments shows $543 in general payments to Dr. Oh from 8 companies from 2016 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Charles I. Oh been practicing?
Dr. Oh's NPI was assigned in 2005.
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