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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JUSTIN KEYAN HASSANI
NPI 1245932169
Internal Medicine in Springfield, MA

Active since March 22, 2023PECOS Enrolled
759 CHESTNUT ST, SPRINGFIELD, MA 01199(413) 794-0000 Get Directions Write a Review

NPPES record last updated: October 21, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Justin Keyan Hassani NPPES

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

JUSTIN KEYAN HASSANI (NPI 1245932169) is an individual internal medicine provider in Springfield, Massachusetts, licensed in California (20A25158) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1245932169
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJUSTIN KEYAN HASSANI
Location Address759 CHESTNUT STSpringfield, MA 01199-0001
Mailing Address759 Chestnut StSpringfield, MA 01199-0001 · (413) 794-0000
Phone(413) 794-0000
Sole ProprietorNo
Enumeration DateMarch 22, 2023
Last NPPES UpdateOctober 21, 2026
NPPES CertifiedOctober 21, 2026
✔ NPI 1245932169 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 20A25158
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
759 CHESTNUT ST, Springfield, MA 01199
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Justin Keyan Hassani is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01199 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
$134.47 typical visit price
range $58.86 – $177.36
Typical copayment $33.61 (range $14.71 – $44.34)
Most-billed visit code 99204
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

DENNIS ZAMBRANO
Student in an Organized Health Care Education/Training Program
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-0000
CHARLES E BROWN
Nurse Anesthetist, Certified Registered
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-3520
RAISA KHAN
Student in an Organized Health Care Education/Training Program
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-0000
VICTORIA YOUNES
Student in an Organized Health Care Education/Training Program
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (418) 794-0000
MR. ROBERT J RUSSELL PCNS
Clinical Nurse Specialist (Psychiatric/Mental Health)
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-3376
DR. BENJAMIN J BARNES MD
Psychiatry & Neurology (Neurology)
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-4440
BAYSTATE MEDICAL CENTER INC
Pharmacy (Community/Retail Pharmacy)
759 CHESTNUT ST, DALY 3 PHARMACY
SPRINGFIELD, MA 01199
Hampden County (413) 794-3291
JEFFREY WALBRIDGE DO
Pediatrics
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-0000

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 Justin Hassani's NPI number?

The NPI number for Justin Hassani is 1245932169. It was assigned to this individual provider in the NPPES registry on March 22, 2023.

Where is Justin Hassani located?

Justin Hassani practices at 759 Chestnut St, Springfield, MA 01199. The listed phone number is (413) 794-0000.

What is Justin Hassani's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Justin Hassani enrolled in Medicare?

Yes. Justin Hassani is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Justin Hassani was last updated on October 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days 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.