CHARLOTTE SPERLING APRN
NPI 1790400950
Nurse Practitioner - Acute Care in Greenwich, CT
About Charlotte Sperling Aprn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHARLOTTE SPERLING APRN (NPI 1790400950) is an individual acute care provider in Greenwich, Connecticut, licensed in Connecticut (11086) and active in the NPI registry since October 2022. She is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (2022).
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
Charlotte Sperling Aprn 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 Reassignments
2Medicare enrollment records show Charlotte Sperling reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Greenwich, CT 06830
- Reassigned Medicare billing, Connecticut enrollment
- 268 clinicians in this Medicare group
Greenwich, CT 06831
- Reassigned Medicare billing, Connecticut enrollment
- 139 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.
Areas of Expertise CMS Part B claims
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06831 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.
GREENWICH, CT 06831
GREENWICH, CT 06831
GREENWICH, CT 06831
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 Charlotte Sperling's NPI number?
The NPI number for Charlotte Sperling is 1790400950. It was assigned to this individual provider in the NPPES registry on October 10, 2022.
Where is Charlotte Sperling located?
Charlotte Sperling practices at 6 Greenwich Office Park, Greenwich, CT 06831. The listed phone number is (203) 869-1145.
What is Charlotte Sperling's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Charlotte Sperling enrolled in Medicare?
Yes. Charlotte Sperling 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 organizations bill Medicare for Charlotte Sperling's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Charlotte Sperling reassigns Medicare benefits to 2 organizations: Greenwich Hospital (Greenwich, CT) and Orthopaedic & Neurosurgery Specialists, PLLC (Greenwich, 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 Charlotte Sperling'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 Charlotte Sperling was last updated on October 10, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Charlotte Sperling, APRN · NPI 1790400950
Acute Care physician in Greenwich, Connecticut. Individual provider, active in the CMS NPPES registry since October 10, 2022.
## Identity
- **NPI:** 1790400950 (Entity type: Individual)
- **Enumerated:** October 10, 2022
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 11086 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 6 GREENWICH OFFICE PARK, Greenwich, CT 06831-5151
- **Phone:** (203) 869-1145
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Greenwich Hospital (NPI 1609846088, Greenwich, CT); Orthopaedic & Neurosurgery Specialists, PLLC (NPI 1033318720, Greenwich, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Yale University School Of Medicine, class of 2022
## Record status
- **NPPES last updated:** October 10, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1790400950) · Data from the CMS NPPES public registry.