MS. CLAUDIA GRACE LESSER CNM
NPI 1598653040
Advanced Practice Midwife in Springfield, MA
About Ms. Claudia Grace Lesser Cnm NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. CLAUDIA GRACE LESSER CNM (NPI 1598653040) is an individual advanced practice midwife in Springfield, Massachusetts, licensed in Massachusetts (RN10017136) and active in the NPI registry since June 2025. She is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (2025).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ms. Claudia Grace Lesser Cnm 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.
Medicare Billing Reassignment
Medicare enrollment records show Claudia Lesser reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Springfield, MA 01199
- Reassigned Medicare billing, Massachusetts enrollment
- 1,537 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 01107 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 01107
SPRINGFIELD, MA 01107
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 Claudia Lesser's NPI number?
The NPI number for Claudia Lesser is 1598653040. It was assigned to this individual provider in the NPPES registry on June 24, 2025.
Where is Claudia Lesser located?
Claudia Lesser practices at 3300 Main St, Springfield, MA 01107. The listed phone number is (413) 794-0000.
What is Claudia Lesser's specialty?
The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.
Is Claudia Lesser enrolled in Medicare?
Yes. Claudia Lesser 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.
Which organization bills Medicare for Claudia Lesser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Claudia Lesser reassigns Medicare benefits to Baystate Medical Practices, Inc (Springfield, MA). The 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 Claudia Lesser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Claudia Lesser was last updated on December 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Ms. Claudia Grace Lesser, CNM · NPI 1598653040
Advanced Practice Midwife physician in Springfield, Massachusetts. Individual provider, active in the CMS NPPES registry since June 24, 2025.
## Identity
- **NPI:** 1598653040 (Entity type: Individual)
- **Enumerated:** June 24, 2025
- **Primary specialty:** Advanced Practice Midwife · taxonomy 367A00000X
- **State license:** RN10017136 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 3300 MAIN ST, Springfield, MA 01107-1112
- **Phone:** (413) 794-0000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Baystate Medical Practices, Inc (NPI 1548205909, Springfield, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Yale University School Of Medicine, class of 2025
## Record status
- **NPPES last updated:** December 16, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1598653040) · Data from the CMS NPPES public registry.