Anthony S Oh, MD
Surgery · Montclair, CA
At a glance
4950 San Bernardino St Ste 202, Montclair, CA 91763-2328
Published activity: Colonoscopy · Hernia repair (minimally invasive) · Hernia repair - groin (open). View counts and coverage
NPPES record updated Apr 17, 2024. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
4950 San Bernardino St Ste 202Montclair, CA 91763-2328
Additional reported practice locations
315 N 3Rd Ave Ste 206Covina, CA 917231917
Phone: 6265930695
Fax: 8778875774
Education & affiliations
- Medical / professional school
- University Of California, Geffen School Of Medicine
- Graduation year
- 1996
- CMS specialties
- General Surgery · Surgical Oncology · Thoracic Surgery
Practice groups
Reported hospital affiliations
- Casa Colina Hospital Pomona, CA
- Emanate Health Foothill Presbyterian Hospital Glendora, CA
- Emanate Health Inter-Community Hospital Covina, CA
- Montclair Hospital Medical Center Montclair, CA
- Pomona Valley Hospital Medical Center Pomona, CA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Colonoscopy | 1-10 |
| Hernia repair (minimally invasive) | 1-10 |
| Hernia repair - groin (open) | 1-10 |
| Mastectomy | 1-10 |
| Melanoma (skin cancer) excision | 1-10 |
| Removal of tissue | 82 |
| Skin biopsy | 1-10 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 17 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Reported clinician measures
Measures below describe reported clinician performance in the stated period. They do not form an overall HCPList rating, and reporting differs between clinicians.
Published clinical measures
- Use of High-Risk Medications in Older Adults
- 0%2024Published MIPS performance rate. Lower rates indicate better performance for this inverse measure. Measure: MIPS_EC_238_overall. Collection type: EHR. Measure denominator: 278.
Source: PY 2024 Clinician Public Reporting: MIPS Measures and Attestations · Published Sep 10, 2026.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Travel and lodging | $443.59 |
| Food and beverage | $389.32 |
Reporting companies
| Company | Amount |
|---|---|
| INTUITIVE SURGICAL, INC. | $742.09 |
| SMITH+NEPHEW, INC. | $38.99 |
| SOLVENTUM CORPORATION | $29.79 |
| TACTILE SYSTEMS TECHNOLOGY INC | $22.04 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Surgery
- Taxonomy code
- 208600000X
- Enumeration date
- Oct 16, 2006
- Record updated
- Apr 17, 2024
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
208600000X · Primary
License reported: A850292 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
4950 San Bernardino St Ste 202Montclair, CA 91763-2328
- Phone
- (909) 621-7647
- Fax
- (877) 887-5774
Mailing address
4950 SAN BERNARDINO ST STE 202MONTCLAIR, CA 917632328
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
Report a directory issue