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ALEXANDER J HARMATZ M.D.
NPI 1730142696
Internal Medicine - Gastroenterology in Providence, RI

Active since April 10, 2006PECOS EnrolledAccepts Medicare Assignment
825 CHALKSTONE AVE, PROVIDENCE, RI 02908(401) 456-6510 Get Directions Write a Review

NPPES record last updated: April 6, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Alexander J Harmatz M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALEXANDER J HARMATZ M.D. (NPI 1730142696) is an individual gastroenterology provider in Providence, Rhode Island, licensed in Rhode Island (MD16455) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Roger Williams Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1730142696
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameALEXANDER J HARMATZCredential: M.D.
Location Address825 CHALKSTONE AVEProvidence, RI 02908-4728
Mailing Address10 Presidential Blvd, Suite 124Bala Cynwyd, PA 19004-1107 · (610) 664-9700 · Fax (610) 664-6391
Phone(401) 456-6510
Sole ProprietorNo
Medical School CMSMedical College Of Georgia School Of MedicineGraduated 1984
Enumeration DateApril 10, 2006
Last NPPES UpdateApril 6, 2026
NPPES CertifiedApril 6, 2026
✔ NPI 1730142696 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in RI · MD16455
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
825 CHALKSTONE AVE, Providence, RI 02908
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1200 High Service AveN Providence, RI 02904-5113 · Phone (401) 456-6510
Location 250 Maude StProvidence, RI 02908-4325 · Phone (401) 456-6510

Other Identifiers 1

Medicaid1235945650RI

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Alexander J Harmatz M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9436132875
PECOS Enrollment IDI20181129002888
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
96 services38 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
74 services70 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
67 services50 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
39 services38 patients
Diagnostic exam of large bowel using a flexible endoscope 45378
This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.
30 services29 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
25 services24 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Roger Williams Medical Center

Acute Care Hospitals · Providence, RI
4/5 CMS rating
OwnershipProprietary
CMS Certification Number410004
Location825 Chalkstone AvenueProvidence, RI 02908 · Providence County
Emergency services

Our Lady Of Fatima Hospital

Acute Care Hospitals · North Providence, RI
3/5 CMS rating
OwnershipProprietary
CMS Certification Number410005
Location200 High Service AvenueNorth Providence, RI 02904 · Providence County
Emergency services

The Miriam Hospital

Acute Care Hospitals · Providence, RI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number410012
Location164 Summit AvenueProvidence, RI 02906 · Providence County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02908 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.17 typical visit price
range $58.57 – $177.03
Typical copayment $33.54 (range $14.64 – $44.25)
Most-billed visit code 99204
Established Patient
$103.10 typical visit price
range $18.92 – $144.38
Typical copayment $25.77 (range $4.73 – $36.09)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
91%120 patients4/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
95%168 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. TODD F ROBERTS MD
Internal Medicine (Medical Oncology)
825 CHALKSTONE AVE
PROVIDENCE, RI 02908
Providence County (401) 456-6565
DR. WILLIAM ARTHUR YELLE MD
Anesthesiology
825 CHALKSTONE AVE
PROVIDENCE, RI 02908
Providence County (401) 456-2000
IAN M JACOBSON MD
Emergency Medicine
825 CHALKSTONE AVE
PROVIDENCE, RI 02908
Providence County (330) 493-4443
PROSPECT CHARTERCARE RWMC, LLC
General Acute Care Hospital
825 CHALKSTONE AVE
PROVIDENCE, RI 02908
Providence County (401) 456-2000
N PETER LIBBEY M.D.
Pathology (Anatomic Pathology)
825 CHALKSTONE AVE, ROGER WILLIAMS MEDICAL CENTER/PATHOLOGY DEPT.
PROVIDENCE, RI 02908
Providence County (401) 456-2162
GARRICK MARK WHITLOCK CRNA
Nurse Anesthetist, Certified Registered
825 CHALKSTONE AVE
PROVIDENCE, RI 02908
Providence County (401) 456-2000
DR. JOHN WESLEY PATRESAN MD
Internal Medicine (Hematology & Oncology)
825 CHALKSTONE AVE
PROVIDENCE, RI 02908
Providence County (401) 456-2000
VALERIE JEAN ZUERCHER
Social Worker (Clinical)
825 CHALKSTONE AVE
PROVIDENCE, RI 02908
Providence County (401) 456-4807

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alexander Harmatz's NPI number?

The NPI number for Alexander Harmatz is 1730142696. It was assigned to this individual provider in the NPPES registry on April 10, 2006.

Where is Alexander Harmatz located?

Alexander Harmatz practices at 825 Chalkstone Ave, Providence, RI 02908. The listed phone number is (401) 456-6510.

What is Alexander Harmatz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Alexander Harmatz enrolled in Medicare?

Yes. Alexander Harmatz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Alexander Harmatz affiliated with any hospitals?

According to CMS data, Alexander Harmatz is affiliated with Roger Williams Medical Center, Our Lady Of Fatima Hospital and The Miriam Hospital.

When was this NPI record last updated?

The NPPES record for Alexander Harmatz was last updated on April 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.