CONSTANTINE YIACHOS M.D.
NPI 1063588127
Internal Medicine - Gastroenterology in Staten Island, NY

Q: What is Constantine Yiachos's NPI number?

The NPI number for Constantine Yiachos is 1063588127. It was assigned to this individual provider in the NPPES registry on November 28, 2006.

Q: What is Constantine Yiachos's specialty?

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

Active since November 28, 2006PECOS EnrolledAccepts Medicare Assignment

129 SLOSSON AVE, STATEN ISLAND, NY 10314(718) 720-5928(718) 720-6706 Get Directions Write a Review

NPPES record last updated: November 16, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Constantine Yiachos M.d. NPPES

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

CONSTANTINE YIACHOS M.D. (NPI 1063588127) is an individual gastroenterology provider in Staten Island, New York, licensed in New York (172409) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Richmond University Medical Center, and is a graduate of State University Of New York Downstate Medical Center (1985).

NPPES Registry Identity

NPI1063588127

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameCONSTANTINE YIACHOSCredential: M.D.

Location Address129 SLOSSON AVEStaten Island, NY 10314-2522

Mailing Address129 Slosson AveStaten Island, NY 10314-2522 · (718) 720-5928 · Fax (718) 720-6706

Phone(718) 720-5928

Fax(718) 720-6706

Sole ProprietorNo

Medical School CMSState University Of New York Downstate Medical CenterGraduated 1985

Enumeration DateNovember 28, 2006

Last NPPES UpdateNovember 16, 2023

NPPES CertifiedNovember 16, 2023

✔ NPI 1063588127 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 NY · 172409

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.

129 SLOSSON AVE, Staten Island, NY 10314

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Other Identifiers 11

Other100013461Medicare Railroad

OtherCY2409Atlantis

Other7838085Aetna

Other100109150502Americhoice

Other2C3244Healthnet

Other172409Hip

OtherOS121Oxford

Other0076533Ghi

Other169907Elderplan

Other78984Ghi Hmo

OtherCYO29F1510Empire Blue Cross Blue Shield

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Constantine Yiachos 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 ID2264500354

PECOS Enrollment IDI20081015000408

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.

Medicare Billing Reassignments

Medicare enrollment records show Constantine Yiachos reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Amboy Medical Practice PC

1.4 mi

Diagnostic Radiology

355 BARD AVE
Staten Island, NY 10310

Reassigned Medicare billing, New York enrollment
305 clinicians in this Medicare group

NPI 1104692672 (718) 818-1234

Icahn School Of Medicine At Mount Sinai

1.5 mi

Internal Medicine

283 BARD AVE
Staten Island, NY 10310

Reassigned Medicare billing, New York enrollment
66 clinicians in this Medicare group

NPI 1861900888 (718) 816-8068

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 13

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

286 services245 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.

115 services111 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

111 services111 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.

38 services38 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

33 services33 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

31 services27 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

30 services30 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.

25 services25 patients

New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202

This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.

25 services25 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

21 services21 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.

17 services17 patients

Biopsy of large bowel using a flexible endoscope 45380

15 services15 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

14 services14 patients

Hospital Affiliations CMS Care Compare 2

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

Richmond University Medical Center

Acute Care Hospitals · Staten Island, NY

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330028

Location355 Bard AvenueStaten Island, NY 10310 · Richmond County

Emergency services Birthing friendly

Staten Island University Hospital

Acute Care Hospitals · Staten Island, NY

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330160

Location475 Seaview AvenueStaten Island, NY 10305 · Richmond County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10314 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

$154.28 typical visit price

range $67.40 – $203.53

Typical copayment $38.57 (range $16.85 – $50.88)

Most-billed visit code 99204

Established Patient

$117.62 typical visit price

range $21.66 – $164.45

Typical copayment $29.40 (range $5.41 – $41.11)

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.

Other Providers at the Same Location NPPES 5

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

LAWRENCE WINE MD

Anesthesiology