Ali Ahmed Siddiqui, MD
Gastroenterology · Internal Medicine (CMS) · Fairfax, VA
At a glance
8081 Innovation Park Dr Ste 301, Fairfax, VA 22031-4867
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Aug 24, 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
8081 Innovation Park Dr Ste 301Fairfax, VA 22031-4867
Additional reported practice locations
21 Eastern AveWorcester, MA 016053094
Phone: 5088568350
Fax: 5088568437 119 Belmont St
Worcester, MA 016052903
Phone: 5083342846
Fax: 5088563981 55 Lake Ave N
Worcester, MA 016550002
Phone: 5083342846
Fax: 5088563981 2535 S Downing St
Suite 360
Denver, CO 80210
Phone: 3032602740
Fax: 3032602741 824 N Military Hwy Ste 100
Norfolk, VA 235023652
Phone: 7573904551 301 Memorial Medical Pkwy
Daytona Beach, FL 321175167
Phone: 3862313072
Fax: 3862315962
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1997
- 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
- Maimonides Medical Center Brooklyn, NY
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 | 41 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 317 |
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 | $1,232.35 |
| Travel and lodging | $417.99 |
Reporting companies
| Company | Amount |
|---|---|
| OLYMPUS CORPORATION OF THE AMERICAS | $500.93 |
| BOSTON SCIENTIFIC CORPORATION | $251.07 |
| FUJIFILM HEALTHCARE AMERICAS CORPORATION | $192.04 |
| STERIS CORPORATION | $176.30 |
| JANSSEN BIOTECH, INC. | $150.00 |
| MADRIGAL PHARMACEUTICALS | $143.44 |
| AROA BIOSURGERY INCORPORATED | $116.14 |
| COOK MEDICAL LLC | $98.65 |
| Other reporting companies | $21.77 |
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
- Jun 20, 2006
- Record updated
- Aug 24, 2023
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207RG0100X
License reported: 41307 TX
207RG0100X
License reported: C156639 CA
207RG0100X
License reported: 291092 MA
207RG0100X · Primary
License reported: 0101274422 VA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
8081 Innovation Park Dr Ste 301Fairfax, VA 22031-4867
- Phone
- (571) 472-6431
- Fax
- (571) 665-6826
Mailing address
PO BOX 37174BALTIMORE, MD 212973174
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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