Dr. Edwin Oh, MD
- Medicare services, 2024
- 139
- Medicare patients, 2024
- 204
- Hospital affiliations
- 1
- Industry payments
- $24
- Medical group
- 1
- Practice address
- 5 Perryridge Rd, Greenwich, CT 06830
- Practice phone
- Call (203) 863-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Oh's professional email, personal email and mobile number
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Dr. Edwin Oh is an internist in Greenwich, Connecticut
Dr. Oh practices at Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System.
Dr. Oh's NPI, 1326451717, was assigned on June 4, 2014. Dr. Oh graduated from Tufts University School of Medicine in 2014. Dr. Oh holds Massachusetts license 259878.
- NPI
- 1326451717NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941599542
- NPI enumeration date
- June 4, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 863-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Edwin Oh practices at Greenwich Hospital in Greenwich, Connecticut
Dr. Oh's primary practice is Greenwich Hospital, at 5 Perryridge Rd, Greenwich, CT 06830 in Fairfield County. The practice phone is (203) 863-3000.
- Greenwich Hospital5 Perryridge Rd, Greenwich, CT 06830 · Fairfield CountyPhone(203) 863-3000
Source: Dmand AI Affiliation Data
Dr. Edwin Oh is affiliated with 1 site of care and 1 medical group
Dr. Oh's primary practice is Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System. The medical group on file is Greenwich Anesthesiology Associates.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Edwin 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 |
|---|---|
| Greenwich Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Edwin Oh is one of 2,189 internists in Connecticut
Internal medicine is Dr. Oh's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Oh is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
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. Edwin Oh billed Medicare for 139 services in 2024
CMS data shows 139 Medicare services from Dr. Oh across 9 procedure codes in 2024, for 204 Medicare patients. Medicare paid $11,924 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Oh's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 1022024: 8814%
- Surgery
- 2023: 512024: 3825%
- Imaging
- 2023: 172024: 1324%
Dr. Oh compared with the Connecticut median for internists, 2024
- Dr. Oh
- Connecticut median
- Medicare services
- 139vs 39064% below
- Medicare patients
- 204vs 17219% above
Medians across 2,185 internists in Connecticut with Dmand AI profiles that report each measure.
Dr. Oh'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. Oh and other internists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Edwin Oh treated 204 Medicare patients in 2024, average age 77
CMS counts 204 Medicare patients who saw Dr. Oh in 2024. The largest group is 75 to 84, with 96 patients. 75% of them have high cholesterol, and 70% have high blood pressure. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Oh's median patient age at 59, with 59% women.
Dr. Oh's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Oh's Medicare patients by sex, 2024
- Women12561%
- Men7939%
Chronic conditions among Dr. Oh's Medicare patients, 2024
- High cholesterol75%
- High blood pressure70%
- Arthritis64%
- Anxiety26%
- Ischemic heart disease25%
- Osteoporosis25%
- Cancer22%
- Atrial fibrillation21%
Share of Medicare patients with each condition. A patient can have several.
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 59
Patient panel by sex, all payers
- Women59%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Edwin Oh takes part in Medicare
Dr. Oh accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Edwin Oh received $24 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Oh from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $24.
Companies that paid Dr. Oh 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. Edwin Oh graduated from Tufts University School of Medicine
Dr. Oh graduated from Tufts University School of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Edwin 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 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 DataMedicare Physician & Other Practitioners - 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) |
| 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. Edwin 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. Edwin Oh's NPI number?
Dr. Edwin Oh's NPI number is 1326451717. It was assigned on June 4, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Edwin Oh?
Dr. Edwin Oh is an internist in Greenwich, Connecticut. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Edwin Oh practice?
Dr. Oh practices at 5 Perryridge Rd, Greenwich, CT 06830. Dr. Oh's primary practice is Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System.
What is Dr. Edwin Oh's office phone number?
The practice phone on file for Dr. Oh is (203) 863-3000.
What is Dr. Edwin Oh's medical license number?
Dr. Oh holds Massachusetts license 259878.
Which hospitals is Dr. Edwin Oh affiliated with?
Dr. Oh practices at Greenwich Hospital in Greenwich, Connecticut.
What medical group is Dr. Edwin Oh part of?
Dr. Oh is linked to Greenwich Anesthesiology Associates.
Does Dr. Edwin Oh accept Medicare?
Yes. CMS data shows Dr. Oh billed Medicare for 139 services in 2024, and Dr. Oh accepts Medicare assignment.
How many Medicare patients does Dr. Edwin Oh see?
CMS counts 204 Medicare patients who saw Dr. Oh in 2024, with an average age of 77.
What services does Dr. Edwin Oh bill to Medicare?
In 2024, Dr. Oh's most billed Medicare services were surgery: brain, spine and nerves (64415), anesthesia (00811) and anesthesia (00142).
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Where did Dr. Edwin Oh go to medical school?
Dr. Oh graduated from Tufts University School of Medicine in 2014.
Has Dr. Edwin Oh received payments from drug or device companies?
CMS Open Payments shows $24 in general payments to Dr. Oh from 1 company from 2023 to 2023. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Edwin Oh been practicing?
Dr. Oh graduated from medical school in 2014, 12 years ago.
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