DR. CAROLINA ALTAGRACIA CHIOU MD
NPI 1336639970
Ophthalmology in Providence, RI

Active since May 17, 2018PECOS EnrolledAccepts Medicare Assignment
1 HOPPIN ST CORO WEST, STE 202, PROVIDENCE, RI 02903(401) 444-6551 Get Directions Write a Review

NPPES record last updated: May 18, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: May 18, 2026, Aug 8, 2024, Jul 15, 2024 and 1 more (4 updates tracked since 2018).

About Dr. Carolina Altagracia Chiou Md NPPES

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

DR. CAROLINA ALTAGRACIA CHIOU MD (NPI 1336639970) is an individual ophthalmology provider in Providence, Rhode Island, licensed in Rhode Island (MD19988) and active in the NPI registry since May 2018. She is enrolled in Medicare PECOS, is affiliated with Rhode Island Hospital, and maintains a secondary practice location in Attleboro.

NPPES Registry Identity

NPI1336639970
Entity TypeIndividualFemale
Primary Taxonomy207W00000X
Provider Legal NameDR. CAROLINA ALTAGRACIA CHIOUCredential: MD
Location Address1 HOPPIN ST CORO WEST, STE 202Providence, RI 02903-4141
Mailing Address15 La Salle SqProvidence, RI 02903-1814 · (401) 444-6779
Sole ProprietorNo
Medical School CMSHarvard Medical SchoolGraduated 2018
Enumeration DateMay 17, 2018
Last NPPES UpdateMay 18, 20264 updates tracked since enumeration
NPPES CertifiedMay 18, 2026
NPI 1336639970 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
Licenses Licensed in RI · MD19988 Licensed in MA · 291901
Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Also ListedOphthalmology · Ophthalmic Plastic and Reconstructive SurgeryTaxonomy 207WX0200X · License MD19988 (RI)
1 HOPPIN ST CORO WEST, Providence, RI 02903

Secondary Practice Location 1

Location 1738 Washington StAttleboro, MA 02703-6948 · Phone (508) 761-6025

Accepted Insurance

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

Dr. Carolina Altagracia Chiou Md 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 ID4587911508
PECOS Enrollment IDI20220620000386, I20240719000702
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 5

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.

Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
63 services63 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
40 services39 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.
23 services23 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.
21 services18 patients
Photography of content of eyes 92285
Photography of the content of eyes, also known as ocular photography, captures detailed images of different parts of the eye. It helps identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. The process is non-invasive and painless.
13 services13 patients

Hospital Affiliations CMS Care Compare 2

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

Rhode Island Hospital

Acute Care Hospitals · Providence, RI
3/5 CMS rating
OwnershipTribal
CMS Certification Number410007
Location593 Eddy StreetProvidence, RI 02903 · 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 02903 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
$72.93 typical visit price
range $18.92 – $144.38
Typical copayment $18.23 (range $4.73 – $36.09)
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.

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 Carolina Chiou's NPI number?

The NPI number for Carolina Chiou is 1336639970. It was assigned to this individual provider in the NPPES registry on May 17, 2018.

Where is Carolina Chiou located?

Carolina Chiou practices at 1 Hoppin St Coro West Ste 202, Providence, RI 02903. The listed phone number is (401) 444-6551.

What is Carolina Chiou's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Carolina Chiou enrolled in Medicare?

Yes. Carolina Chiou 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.

What insurance does Carolina Chiou accept?

Health plans from Anthem Blue Cross and Blue Shield list Carolina Chiou 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.

Is Carolina Chiou affiliated with any hospitals?

According to CMS data, Carolina Chiou is affiliated with Rhode Island Hospital and The Miriam Hospital.

When was this NPI record last updated?

The NPPES record for Carolina Chiou was last updated on May 18, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.