CALVIN KNOX DO
NPI 1679276323
Emergency Medicine in Springfield, MA
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 and is a graduate of Touro Un Col Of Osteopathic Medicine, New York (2023).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Calvin Knox Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Calvin Knox reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Springfield, MA 01199
- Reassigned Medicare billing, Massachusetts enrollment
- 1,537 clinicians in this Medicare group
Springfield, MA 01104
- Reassigned Medicare billing, Massachusetts enrollment
- 62 clinicians in this Medicare group
Stafford Springs, CT 06076
- Reassigned Medicare billing, Connecticut enrollment
- 100 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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.
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.
SPRINGFIELD, MA 01199
SPRINGFIELD, MA 01199
SPRINGFIELD, MA 01199
SPRINGFIELD, MA 01199
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.
Which organizations bill Medicare for Calvin Knox's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Calvin Knox reassigns Medicare benefits to 3 organizations: Baystate Medical Practices, Inc (Springfield, MA), Vituity-Massachusetts PLLC (Springfield, MA) and Cep America LLC (Stafford Springs, 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 Calvin Knox's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Calvin Knox accept?
Health plans from WellSense Health Plan list Calvin Knox 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 Calvin Knox was last updated on August 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Calvin Knox, DO · NPI 1679276323
Emergency Medicine physician in Springfield, Massachusetts. Individual provider, active in the CMS NPPES registry since March 22, 2023.
## Identity
- **NPI:** 1679276323 (Entity type: Individual)
- **Enumerated:** March 22, 2023
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 1027519 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 759 CHESTNUT ST, Springfield, MA 01199-0001
- **Phone:** (413) 794-0000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Baystate Medical Practices, Inc (NPI 1548205909, Springfield, MA); Vituity-Massachusetts PLLC (NPI 1083404313, Springfield, MA); Cep America LLC (NPI 1427853936, Stafford Springs, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Touro Un Col Of Osteopathic Medicine, New York, class of 2023
## Record status
- **NPPES last updated:** August 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1679276323) · Data from the CMS NPPES public registry.