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DR. CASSIUS IYAD N OCHOA CHAAR M.D., M.S.
NPI 1669600698
Surgery - Vascular Surgery in New Haven, CT

Active since June 29, 2009PECOS EnrolledAccepts Medicare Assignment
73.56/100
CMS Quality Rating
330 CEDAR ST, NEW HAVEN, CT 06510(203) 676-5835 Get Directions Write a Review

NPPES record last updated: October 8, 2014. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Cassius Iyad N Ochoa Chaar M.d., M.s. NPPES

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

DR. CASSIUS IYAD N OCHOA CHAAR M.D., M.S. (NPI 1669600698) is an individual vascular surgery provider in New Haven, Connecticut, licensed in Connecticut (049872) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS and is a graduate of Other (2002).

NPPES Registry Identity

NPI1669600698
Entity TypeIndividualMale
Primary Taxonomy2086S0129X
Provider Legal NameDR. CASSIUS IYAD N OCHOA CHAARCredential: M.D., M.S.
Location Address330 CEDAR STNew Haven, CT 06510-3218
Mailing Address67 Kendal CtGuilford, CT 06437-2078 · (203) 785-4582 · Fax (203) 785-7556
Phone(203) 676-5835
Sole ProprietorYes
Medical School CMSOtherGraduated 2002
Enumeration DateJune 29, 2009
Last NPPES UpdateOctober 8, 2014
✔ NPI 1669600698 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Vascular SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0129X
License✔ Licensed in CT · 049872
Definition
A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.
Also ListedSpecialistTaxonomy 174400000X · License MT195605 (PA)
330 CEDAR ST, New Haven, CT 06510
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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

Dr. Cassius Iyad N Ochoa Chaar M.d., M.s. 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 ID1850560509
PECOS Enrollment IDI20110815000166
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

2

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

Mill Hill Medical Consultants Inc
0.2 mi
Hospitalist
20 YORK ST, CB 2041
New Haven, CT 06510
  • Reassigned Medicare billing, Connecticut enrollment
  • Medicare enrollment name: Northeast Medical Group Inc
  • 1,824 clinicians in this Medicare group
NPI 1952624769 (203) 688-4741
Yale University
0.3 mi
Advanced Practice Midwife
100 CHURCH ST S STE 200, YALE SCHOOL OF NURSING
New Haven, CT 06519
  • Reassigned Medicare billing, Connecticut enrollment
  • 3,728 clinicians in this Medicare group
NPI 1124148887 (203) 737-5432

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 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.
119 services40 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.
47 services35 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.
45 services40 patients
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.
36 services31 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.
31 services29 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
31 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06510 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
$93.86 typical visit price
range $60.82 – $183.10
Typical copayment $23.46 (range $15.20 – $45.77)
Most-billed visit code 99203
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
Most-billed visit code 99213
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.

73.56/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality75.84
Promoting Interoperability74
Improvement Activities40
Cost51.43

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. PRAMOD BONDE MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
330 CEDAR ST, BOADMAN 204
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-6122
KAVYA SRINIVASAN
Student in an Organized Health Care Education/Training Program
330 CEDAR ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-3898
DR. JEROME DWUAN TAYLOR MD
Surgery
330 CEDAR ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (929) 210-6160
LAURA DAVIS
Surgery
330 CEDAR ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-5000
SARAH ULLRICH M.D.
Student in an Organized Health Care Education/Training Program
330 CEDAR ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-7890
DR. MAURO HANAOKA MD
Radiology (Diagnostic Radiology)
330 CEDAR ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-2385
TRACY A STURROCK APRN
Nurse Practitioner (Family)
330 CEDAR ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 875-3098
DR. ALEXANDER KORAL MD
Pediatrics (Pediatric Gastroenterology)
330 CEDAR ST, LMP 4093
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-4649

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 Cassius Iyad Ochoa Chaar's NPI number?

The NPI number for Cassius Iyad Ochoa Chaar is 1669600698. It was assigned to this individual provider in the NPPES registry on June 29, 2009.

Where is Cassius Iyad Ochoa Chaar located?

Cassius Iyad Ochoa Chaar practices at 330 Cedar St, New Haven, CT 06510. The listed phone number is (203) 676-5835.

What is Cassius Iyad Ochoa Chaar's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Is Cassius Iyad Ochoa Chaar enrolled in Medicare?

Yes. Cassius Iyad Ochoa Chaar 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.

Which organizations bill Medicare for Cassius Iyad Ochoa Chaar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cassius Iyad Ochoa Chaar reassigns Medicare benefits to 2 organizations: Mill Hill Medical Consultants Inc (New Haven, CT) and Yale University (New Haven, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Cassius Iyad Ochoa Chaar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Cassius Iyad Ochoa Chaar accept?

Health plans from Anthem Blue Cross and Blue Shield list Cassius Iyad Ochoa Chaar as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Cassius Iyad Ochoa Chaar was last updated on October 8, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.