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JOHN CHIOSI M.D.
NPI 1306231097
Internal Medicine - Infectious Disease in Boston, MA

Active since March 31, 2015PECOS EnrolledAccepts Medicare Assignment
55 FRUIT ST., COX 5, BOSTON, MA 02114(617) 726-3906(617) 726-7653 Get Directions Write a Review

NPPES record last updated: June 1, 2023. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jun 1, 2023, Apr 16, 2021, Aug 2, 2019 (3 updates tracked since 2019).

About John Chiosi M.d. NPPES

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

JOHN CHIOSI M.D. (NPI 1306231097) is an individual infectious disease provider in Boston, Massachusetts, licensed in Massachusetts (279009) and active in the NPI registry since March 2015. He is enrolled in Medicare PECOS, is affiliated with Cooley Dickinson Hospital Inc,the, and is a graduate of Icahn School Of Medicine At Mount Sinai (2015).

NPPES Registry Identity

NPI1306231097
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameJOHN CHIOSICredential: M.D.
Location Address55 FRUIT ST., COX 5Boston, MA 02114
Mailing Address55 Fruit St., Cox-5Boston, MA 02114
Phone(617) 726-3906
Fax(617) 726-7653
Sole ProprietorNo
Medical School CMSIcahn School Of Medicine At Mount SinaiGraduated 2015
Enumeration DateMarch 31, 2015
Last NPPES UpdateJune 1, 20233 updates tracked since enumeration
NPPES CertifiedJune 1, 2023
✔ NPI 1306231097 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in MA · 279009
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
55 FRUIT ST., Boston, MA 02114
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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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John Chiosi 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 ID6103106299
PECOS Enrollment IDI20210721003052
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 4

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 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.
52 services26 patients
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.
27 services11 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.
13 services11 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
13 services13 patients

Hospital Affiliations CMS Care Compare 3

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

Cooley Dickinson Hospital Inc,the

Acute Care Hospitals · Northampton, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220015
Location30 Locust StreetNorthampton, MA 01060 · Hampshire County
Emergency services Birthing friendly

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220071
Location55 Fruit StreetBoston, MA 02114 · Suffolk County
Emergency services Birthing friendly

Newton-Wellesley Hospital

Acute Care Hospitals · Newton, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220101
Location2014 Washington StreetNewton, MA 02462 · Middlesex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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 20

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

QIAN YANG DMD
Oral & Maxillofacial Surgery
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-8222
SANJAY MENON MD
Psychiatry & Neurology (Neurology)
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (857) 238-5600
NOAH DANIEL HURST LEWIS MD
Student in an Organized Health Care Education/Training Program
55 FRUIT ST., YAWHAY OUTPATIENT CENTER -5B
BOSTON, MA 02114
Suffolk County (617) 643-7117
GANESH M SHANKAR MD, PHD
Neurological Surgery
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-5143
JAMIE M JACOBS PHD
Psychologist (Clinical)
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 724-5600
HIDEO MAKIMURA M.D., PH.D.
Internal Medicine
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-7948
DAVID T MADURAM MD, PHD
Anesthesiology
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-3030
OPEYEMI A OLABISI MD, PHD
Internal Medicine
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-2862

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 John Chiosi's NPI number?

The NPI number for John Chiosi is 1306231097. It was assigned to this individual provider in the NPPES registry on March 31, 2015.

Where is John Chiosi located?

John Chiosi practices at 55 Fruit St. Cox 5, Boston, MA 02114. The listed phone number is (617) 726-3906.

What is John Chiosi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is John Chiosi enrolled in Medicare?

Yes. John Chiosi 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 John Chiosi accept?

Health plans from Anthem Blue Cross and Blue Shield list John Chiosi 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 John Chiosi affiliated with any hospitals?

According to CMS data, John Chiosi is affiliated with Cooley Dickinson Hospital Inc,the, Massachusetts General Hospital and Newton-Wellesley Hospital.

When was this NPI record last updated?

The NPPES record for John Chiosi was last updated on June 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.