KATHERINE NAU GRIECO D.O.
NPI 1396940722
Family Medicine - Addiction Medicine in Hartford, CT
About Katherine Nau Grieco D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE NAU GRIECO D.O. (NPI 1396940722) is an individual addiction medicine provider in Hartford, Connecticut, licensed in Connecticut (048852) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in New Haven, and is a graduate of University Of New England, College Of Osteo Medicine (2005).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Katherine Nau Grieco D.o. 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 Katherine Grieco reassigns Medicare billing to 2 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
- Also billed through NPI 1770696643 (Connecticut)
- 1,333 clinicians in this Medicare group
Meriden, CT 06450
- Reassigned Medicare billing, Connecticut enrollment
- 106 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 06106 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 06106
HARTFORD, CT 06106
HARTFORD, CT 06106
HARTFORD, CT 06106
HARTFORD, CT 06106
HARTFORD, CT 06106
HARTFORD, CT 06106
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 Katherine Grieco's NPI number?
The NPI number for Katherine Grieco is 1396940722. It was assigned to this individual provider in the NPPES registry on June 16, 2007.
Where is Katherine Grieco located?
Katherine Grieco practices at 200 Retreat Avenue Hartford Hospital Psychiatry Dept, Hartford, CT 06106. The listed phone number is (484) 529-7465.
What is Katherine Grieco's specialty?
The primary specialty registered for this NPI is Family Medicine, specializing in Addiction Medicine, with taxonomy code 207QA0401X.
Is Katherine Grieco enrolled in Medicare?
Yes. Katherine Grieco 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 Katherine Grieco's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Grieco reassigns Medicare benefits to 2 organizations: Hartford Hospital (Hartford, CT) and Rushford Center, Inc. (Meriden, 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 Katherine Grieco'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 Katherine Grieco was last updated on September 25, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Katherine Nau Grieco, D.O. · NPI 1396940722
Addiction Medicine physician in Hartford, Connecticut. Individual provider, active in the CMS NPPES registry since June 16, 2007.
## Identity
- **NPI:** 1396940722 (Entity type: Individual)
- **Enumerated:** June 16, 2007
- **Primary specialty:** Family Medicine - Addiction Medicine · taxonomy 207QA0401X
- **State license:** 048852 (Connecticut)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 200 RETREAT AVENUE, HARTFORD HOSPITAL PSYCHIATRY DEPT, Hartford, CT 06106-3309
- **Phone:** (484) 529-7465
## 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): Hartford Hospital (NPI 1407806391, Hartford, CT); Rushford Center, Inc. (NPI 1275541005, Meriden, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of New England, College Of Osteo Medicine, class of 2005
## Record status
- **NPPES last updated:** September 25, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1396940722) · Data from the CMS NPPES public registry.