Alexander J Harmatz, M.D.
Gastroenterology · Internal Medicine (CMS) · Providence, RI
At a glance
825 Chalkstone Ave, Providence, RI 02908-4728
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Apr 6, 2026. 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
825 Chalkstone AveProvidence, RI 02908-4728
Additional reported practice locations
200 High Service AveN Providence, RI 029045113
Phone: 4014566510 50 Maude St
Providence, RI 029084325
Phone: 4014566510
Education & affiliations
- Medical / professional school
- Medical College Of Georgia School Of Medicine
- Graduation year
- 1984
- 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
- Our Lady Of Fatima Hospital North Providence, RI
- Roger Williams Medical Center Providence, RI
- The Miriam Hospital Providence, RI
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 | 90 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 127 |
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 | $768.57 |
Reporting companies
| Company | Amount |
|---|---|
| GILEAD SCIENCES, INC. | $385.32 |
| PHATHOM PHARMACEUTICALS, INC. | $199.99 |
| JANSSEN BIOTECH, INC. | $74.66 |
| LILLY USA, LLC | $28.79 |
| TAKEDA PHARMACEUTICALS U.S.A., INC. | $28.09 |
| INTERCEPT PHARMACEUTICALS, INC. | $26.47 |
| ARDELYX, INC. | $25.25 |
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
- Apr 10, 2006
- Record updated
- Apr 6, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RG0100X · Primary
License reported: MD16455 RI
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
825 Chalkstone AveProvidence, RI 02908-4728
- Phone
- (401) 456-6510
Mailing address
10 PRESIDENTIAL BLVDSUITE 124
BALA CYNWYD, PA 190041107
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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