Ajay Kumar Upadhyay, MD
Surgery · Oakland, CA
At a glance
365 Hawthorne Ave, Oakland, CA 94609-3115
Published activity: Colonoscopy · Hernia repair (minimally invasive) · Hernia repair - groin (open). View counts and coverage
NPPES record updated Feb 11, 2025. 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
365 Hawthorne Ave Ste 101Oakland, CA 94609-3115
Additional reported practice locations
3010 Colby St Ste 118Berkeley, CA 947052059
Phone: 5104860818
Fax: 5104860819 27206 Calaroga Ave Ste 206
Hayward, CA 945454300
Phone: 5107325731
Fax: 5107325739
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1980
- CMS specialties
- General Surgery
Practice groups
Reported hospital affiliations
- Alta Bates Summit Medical Center Oakland, CA
- Alta Bates Summit Medical Center - Alta Bates Camp Berkeley, CA
- Eden Medical Center Castro Valley, CA
- Highland Hospital Oakland, CA
- St Rose Hospital Hayward, 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) | 27 |
| Hernia repair - groin (open) | 1-10 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 18 |
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.
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 | $1,072.07 |
Reporting companies
| Company | Amount |
|---|---|
| MEDTRONIC, INC. | $414.86 |
| TELEFLEX LLC | $303.23 |
| INTUITIVE SURGICAL, INC. | $204.80 |
| TELA BIO, INC. | $71.25 |
| INTEGRA LIFESCIENCES CORPORATION | $30.70 |
| BRAINTREE LABORATORIES, INC. | $27.79 |
| ETHICON US, LLC | $19.44 |
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
- Apr 5, 2006
- Record updated
- Feb 11, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
208600000X · Primary
License reported: A53488 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
365 Hawthorne AveSte 101
Oakland, CA 94609-3115
- Phone
- (510) 465-5523
- Fax
- (510) 832-6061
Mailing address
365 HAWTHORNE AVESTE 101
OAKLAND, CA 946093115
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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