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

CALVIN KNOX DO
NPI 1679276323
Emergency 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: July 17, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 17, 2026, Mar 22, 2023 (2 updates tracked since 2023).

About Calvin Knox Do NPPES

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

CALVIN KNOX DO (NPI 1679276323) is an individual emergency medicine provider in Springfield, Massachusetts, licensed in Massachusetts (1027519) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1679276323
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameCALVIN KNOXCredential: DO
Location Address759 CHESTNUT STSpringfield, MA 01199-0001
Mailing Address759 Chestnut StSpringfield, MA 01199-0001 · (413) 794-0000
Sole ProprietorNo
Enumeration DateMarch 22, 2023
Last NPPES UpdateJuly 17, 20262 updates tracked since enumeration
NPPES CertifiedJuly 17, 2026
NPI 1679276323 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License Licensed in MA · 1027519
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
759 CHESTNUT ST, Springfield, MA 01199

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Calvin Knox Do 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
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.

Student in an Organized Health Care Education/Training Program
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Nurse Anesthetist, Certified Registered
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Student in an Organized Health Care Education/Training Program
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Student in an Organized Health Care Education/Training Program
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Clinical Nurse Specialist (Psychiatric/Mental Health)
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Psychiatry & Neurology (Neurology)
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Pharmacy (Community/Retail Pharmacy)
759 CHESTNUT ST, DALY 3 PHARMACY
SPRINGFIELD, MA 01199
Pediatrics
759 CHESTNUT ST
SPRINGFIELD, MA 01199

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 Calvin Knox's NPI number?

The NPI number for Calvin Knox is 1679276323. It was assigned to this individual provider in the NPPES registry on March 22, 2023.

Where is Calvin Knox located?

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

What is Calvin Knox's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Calvin Knox enrolled in Medicare?

Yes. Calvin Knox is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Calvin Knox was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 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.