Dr. Anthony S. Oh, MD
- Medicare services, 2024
- 1,361
- Medicare patients, 2024
- 275
- Part D claims, 2024
- 97
- Publications
- 1
- Hospital affiliations
- 9
- Practice address
- 4950 San Bernardino St Suite 202 Suite 202, Montclair, CA 91763-2328
- Practice phone
- Call (909) 621-7647
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Inland Valley Surgeons Of Socal
Surgical practice · Montclair, California
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. Anthony S. Oh is a general surgeon in Montclair, California
Dr. Oh practices at Inland Valley Surgeons Of Socal in Montclair, California.
Dr. Oh's NPI, 1154401354, was assigned on October 16, 2006. Dr. Oh graduated from David Geffen School of Medicine at UCLA in 1996. Dr. Oh holds California license A850292.
- NPI
- 1154401354NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971593344
- NPI enumeration date
- October 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 621-7647
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Anthony S. Oh practices at Inland Valley Surgeons of Socal in Montclair, California
Dr. Oh's primary practice is Inland Valley Surgeons of Socal, at 4950 San Bernardino St Suite 202 Suite 202, Montclair, CA 91763-2328. The practice phone is (909) 621-7647.
- Inland Valley Surgeons of Socal4950 San Bernardino St Suite 202 Suite 202, Montclair, CA 91763-2328Phone(909) 621-7647
Source: Dmand AI Affiliation Data
Dr. Anthony S. Oh is affiliated with 11 sites of care and 2 medical groups
Dr. Oh's primary practice is Inland Valley Surgeons Of Socal in Montclair, California. Dr. Oh is also affiliated with Pomona Valley Hospital Medical Center. The medical group on file is Inland Valley Surgeons of SoCal. Dmand AI also links Dr. Oh to 8 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Anthony S. Oh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oh practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Inland Valley Surgeons Of Socal | Available with a free account |
| +10 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Anthony S. Oh is one of 2,926 general surgeons in California
Surgery is Dr. Oh's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Oh is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Oh's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Surgery, CaliforniaPrimary
- New York license
Clinical focus
Dmand AI lists abdominal hernia repair surgery, colon removal, gallbladder removal, groin hernia surgery and removal of damaged skin or skin graft among the conditions Dr. Oh treats.
General surgeons near Dr. Oh
Counts of general surgeons 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. Anthony S. Oh billed Medicare for 1,361 services in 2024
CMS data shows 1,361 Medicare services from Dr. Oh across 16 procedure codes in 2024, for 275 Medicare patients. Medicare paid $100,011 for them.
Dr. Oh's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0292024: 1,13110%
- Surgery
- 2023: 1432024: 1516%
- Imaging
- 2023: 672024: 7918%
Where Dr. Oh's Medicare services took place, 2024
- In an office745%
- In a facility1,28795%
Dr. Oh compared with the California median for general surgeons, 2024
- Dr. Oh
- California median
- Medicare services
- 1,361vs 1668.2 times
- Medicare patients
- 275vs 1212.3 times
- Part D claims
- 75vs 342.2 times
Medians across 2,606 general surgeons in California 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 general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Anthony S. Oh treated 275 Medicare patients in 2024, average age 70
CMS counts 275 Medicare patients who saw Dr. Oh in 2024. The largest group is 65 to 74, with 122 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 76% are also on Medicaid. Their average risk score is 4.78, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Oh's median patient age at 56, with 62% women.
Dr. Oh's Medicare patients by age, 2024
Dr. Oh's Medicare patients by sex, 2024
- Women13348%
- Men14252%
Chronic conditions among Dr. Oh's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes67%
- Chronic kidney disease63%
- Heart failure54%
- Arthritis45%
- Ischemic heart disease45%
- Mood disorders42%
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 56
Patient panel by sex, all payers
- Women62%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Anthony S. Oh wrote 97 Medicare Part D claims in 2024
In 2024, Dr. Oh wrote 97 Medicare Part D claims for 77 patients. 100% of them were for generic drugs. CMS names the drug for 75 of them, across 2 drugs with 11 or more claims each, at $395 in total drug cost. In 2023, CMS named 32 claims across 1 drug.
Dr. Oh'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.
Drug classes CMS tracks in Dr. Oh's Part D claims, 2024
- Opioids79%77 of 97 claims
- Antibiotics16%16 of 97 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 322024: 75134%
Drugs named by CMS: 2 in 2024, 1 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
Dr. Anthony S. Oh ranks in the 83rd percentile for removal of tissue in Medicare
Dr. Oh accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 82 procedures of removal of tissue by Dr. Oh, more than 83% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Oh ranks in Medicare procedure volume
- Removal of tissue
- 83rd percentile82 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 48th percentile17 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 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. Anthony S. Oh has 1 publication on record
Dmand AI links 1 paper to Dr. Oh.
Recent publications by Dr. Oh
See who Dr. Oh researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Oh works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Anthony S. Oh received $44,978 in industry payments from 2016 to 2025
CMS Open Payments shows 118 general payments to Dr. Oh from 11 drug and device companies from 2016 to 2025. Education make up the largest share, 82% of the total. Intuitive Surgical, Inc. paid the most, $42,982.
General payments to Dr. Oh by program year, 2016 to 2025
General payments to Dr. Oh by kind, 2016 to 2025
- Education$37,04582%
- Travel and lodging$5,05311%
- Food and beverage$2,8816%
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
Dr. Anthony S. Oh has 1 award and honors on record
Dmand AI lists 1 award for Dr. Oh.
Awards and honors for Dr. Oh
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. Anthony S. Oh graduated from David Geffen School of Medicine at UCLA
Dr. Oh graduated from David Geffen School of Medicine at UCLA in 1996. Dr. Oh is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Anthony S. Oh accepts plans from 17 insurance carriers
Dr. Oh is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Humana
- LA Care
- Blue Cross Blue Shield of Massachusetts
- +9 more carriersWith a free account
Plan types Dr. Oh accepts, by number of carriers
- Medicare10
- PPO10
- HMO9
- EPO4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Anthony S. 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 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) |
| 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. Anthony S. 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. Anthony S. Oh's NPI number?
Dr. Anthony S. Oh's NPI number is 1154401354. It was assigned on October 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Anthony S. Oh?
Dr. Anthony S. Oh is a general surgeon in Montclair, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Anthony S. Oh practice?
Dr. Oh practices at 4950 San Bernardino St Suite 202 Suite 202, Montclair, CA 91763-2328. Dr. Oh's primary practice is Inland Valley Surgeons Of Socal in Montclair, California. Dmand AI also links Dr. Oh to 8 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Anthony S. Oh's office phone number?
The practice phone on file for Dr. Oh is (909) 621-7647.
What is Dr. Anthony S. Oh's medical license number?
Dr. Oh holds California license A850292, one of the licenses on file in 2 states.
Which states has Dr. Anthony S. Oh been licensed in?
Dmand AI has state licenses on file for Dr. Oh in California (2003 to 2027) and New York (1999 to 2004).
Which hospitals is Dr. Anthony S. Oh affiliated with?
Dr. Oh is affiliated with Pomona Valley Hospital Medical Center. Dmand AI links Dr. Oh to 8 more hospitals.
What medical group is Dr. Anthony S. Oh part of?
Dr. Oh is linked to Inland Valley Surgeons of SoCal. Dmand AI links Dr. Oh to 1 more medical group.
Does Dr. Anthony S. Oh accept Medicare?
Yes. CMS data shows Dr. Oh billed Medicare for 1,361 services in 2024, and Dr. Oh accepts Medicare assignment.
How many Medicare patients does Dr. Anthony S. Oh see?
CMS counts 275 Medicare patients who saw Dr. Oh in 2024, with an average age of 70.
Show 8 more questionsShow fewer questions
Is Dr. Anthony S. Oh board certified?
Yes. Dr. Oh is board certified in surgery by the American Board of Surgery.
What services does Dr. Anthony S. Oh bill to Medicare?
In 2024, Dr. Oh's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99231) and hospital inpatient care (99222).
Where did Dr. Anthony S. Oh go to medical school?
Dr. Oh graduated from David Geffen School of Medicine at UCLA in 1996.
What drugs does Dr. Anthony S. Oh prescribe most?
In 2024 Medicare Part D data, Dr. Oh's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Acetaminophen-Codeine.
Has Dr. Anthony S. Oh received payments from drug or device companies?
CMS Open Payments shows $44,978 in general payments to Dr. Oh from 11 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Anthony S. Oh been practicing?
Dr. Oh graduated from medical school in 1996, 30 years ago.
Does Dr. Anthony S. Oh do research?
Dmand AI links 1 publication to Dr. Oh.
What insurance does Dr. Anthony S. Oh accept?
Dr. Oh is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
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