Mark Harold Kogan, M.D.
Gastroenterology · Internal Medicine (CMS) · San Pablo, CA
At a glance
2089 Vale Rd, San Pablo, CA 94806-3847
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Mar 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
2089 Vale Rd Suite 33San Pablo, CA 94806-3847
Additional reported practice locations
2450 Ashby AveBerkeley, CA 947052067
Phone: 5102044444
Education & affiliations
- Medical / professional school
- Northwestern University Feinberg Medical School
- Graduation year
- 1980
- CMS specialties
- Gastroenterology · Internal Medicine
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- Alta Bates Summit Medical Center Oakland, CA
- Alta Bates Summit Medical Center - Alta Bates Camp Berkeley, CA
- Contra Costa Regional Medical Center Martinez, CA
- Ridgecrest Regional Hospital Ridgecrest, 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 | 71 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 78 |
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 | $1,657.67 |
Reporting companies
| Company | Amount |
|---|---|
| JANSSEN BIOTECH, INC. | $589.85 |
| MADRIGAL PHARMACEUTICALS | $312.04 |
| ABBVIE INC. | $232.71 |
| TAKEDA PHARMACEUTICALS U.S.A., INC. | $139.66 |
| BRAINTREE LABORATORIES, INC. | $77.44 |
| LILLY USA, LLC | $66.05 |
| PHATHOM PHARMACEUTICALS, INC. | $62.56 |
| AIMMUNE THERAPEUTICS, INC. | $61.62 |
| Other reporting companies | $115.74 |
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
- Aug 1, 2006
- Record updated
- Mar 11, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RG0100X · Primary
License reported: G60809 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
2089 Vale RdSuite 33
San Pablo, CA 94806-3847
- Phone
- (510) 234-5012
- Fax
- (510) 234-4921
Mailing address
2089 VALE RDSUITE 33
SAN PABLO, CA 948063847
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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