Jenny Daci Yang, MD
Gastroenterology · Internal Medicine (CMS) · San Jose, CA
At a glance
2331 Montpelier Dr Ste B, San Jose, CA 95116-1673
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Nov 7, 2023. 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
2331 Montpelier Dr Ste BSan Jose, CA 95116-1673
Additional reported practice locations
231 Oconnor DrSan Jose, CA 951281624
Phone: 4083479001
Fax: 4083479004 200 Jose Figueres Ave Ste 265
San Jose, CA 951161589
Phone: 4083479001
Fax: 4083479004
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2005
- CMS specialties
- Gastroenterology · Internal Medicine
Practice groups
Reported hospital affiliations
- Santa Clara Valley Medical Center San Jose, 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 | 166 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 57 |
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
- Documentation of Current Medications in the Medical Record
- 100%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_130_overall. Collection type: EHR. Measure denominator: 1736.
- Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented
- 95%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_317_overall. Collection type: EHR. Measure denominator: 869.
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 |
|---|---|
| Food and beverage | $409.68 |
Reporting companies
| Company | Amount |
|---|---|
| 3-D MATRIX, INC. | $235.42 |
| ABBVIE INC. | $93.60 |
| JANSSEN BIOTECH, INC. | $22.36 |
| BRAINTREE LABORATORIES, INC. | $20.66 |
| PFIZER INC. | $18.84 |
| MADRIGAL PHARMACEUTICALS | $18.80 |
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
- Gastroenterology · Internal Medicine (CMS)
- Taxonomy code
- 207RG0100X
- Enumeration date
- Dec 2, 2008
- Record updated
- Nov 7, 2023
More registry details
- Provider type
- Individual · Type 1
- Other reported name
- KUANG DACI
- Reported credentials
- MD
Reported taxonomies and licenses
207RG0100X · Primary
License reported: A119192 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
2331 Montpelier Dr Ste BSan Jose, CA 95116-1673
- Phone
- (408) 347-9001
- Fax
- (408) 347-9004
Mailing address
2331 MONTPELIER DR STE BSAN JOSE, CA 951161673
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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