LEIGH NATHAN MD
NPI 1639496623
Psychiatry & Neurology - Psychiatry in Hartford, CT
About Leigh Nathan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEIGH NATHAN MD (NPI 1639496623) is an individual psychiatry provider in Hartford, Connecticut, licensed in Connecticut (052945) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS and is a graduate of Temple University School Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Leigh Nathan Md 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
6Medicare enrollment records show Leigh Nathan reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hartford, CT 06102
- Reassigned Medicare billing, Connecticut enrollment
- 1,333 clinicians in this Medicare group
Willimantic, CT 06226
- Reassigned Medicare billing, Connecticut enrollment
- 302 clinicians in this Medicare group
Manchester, CT 06040
- Reassigned Medicare billing, Connecticut enrollment
- 60 clinicians in this Medicare group
Norwich, CT 06360
- Reassigned Medicare billing, Connecticut enrollment
- 430 clinicians in this Medicare group
Ansonia, CT 06401
- Reassigned Medicare billing, Connecticut enrollment
- 83 clinicians in this Medicare group
Bridgeport, CT 06610
- Reassigned Medicare billing, Connecticut enrollment
- 136 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 2
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 06102 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
HARTFORD, CT 06102
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 Leigh Nathan's NPI number?
The NPI number for Leigh Nathan is 1639496623. It was assigned to this individual provider in the NPPES registry on April 29, 2010.
Where is Leigh Nathan located?
Leigh Nathan practices at 80 Seymour St Psychiatry Dept, Hartford, CT 06102. The listed phone number is (860) 972-2629.
What is Leigh Nathan's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Leigh Nathan enrolled in Medicare?
Yes. Leigh Nathan 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 Leigh Nathan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leigh Nathan reassigns Medicare benefits to 6 organizations: Hartford Hospital (Hartford, CT), Windham Community Memorial Hospital, Inc. (Willimantic, CT), Manchester Memorial Hospital, Inc. (Manchester, CT), William W Backus Hospital (Norwich, CT), Bhcare, Inc. (Ansonia, CT) and 1 more organization, listed in the Medicare section above. 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 Leigh Nathan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Leigh Nathan accept?
Health plans from Anthem Blue Cross and Blue Shield list Leigh Nathan 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 Leigh Nathan was last updated on September 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Leigh Nathan, MD · NPI 1639496623
Psychiatry physician in Hartford, Connecticut. Individual provider, active in the CMS NPPES registry since April 29, 2010.
## Identity
- **NPI:** 1639496623 (Entity type: Individual)
- **Enumerated:** April 29, 2010
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 052945 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 80 SEYMOUR ST, PSYCHIATRY DEPT, Hartford, CT 06102-8000
- **Phone:** (860) 972-2629
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Hartford Hospital (NPI 1770696643, Hartford, CT); Windham Community Memorial Hospital, Inc. (NPI 1023191467, Willimantic, CT); Manchester Memorial Hospital, Inc. (NPI 1295695039, Manchester, CT); William W Backus Hospital (NPI 1730243536, Norwich, CT); Bhcare, Inc. (NPI 1306042700, Ansonia, CT); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Temple University School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** September 16, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1639496623) · Data from the CMS NPPES public registry.