KATHRYN HESS LIBBY
NPI 1689109423
Internal Medicine - Pulmonary Disease in South Portland, ME
About Kathryn Hess Libby NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHRYN HESS LIBBY (NPI 1689109423) is an individual pulmonary disease provider in South Portland, Maine, licensed in Maine (MD27841) and active in the NPI registry since May 2017. She is enrolled in Medicare PECOS, is affiliated with Northern Light Health, and is a graduate of Other (2017).
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 and accepts Medicare assignment
Kathryn Hess Libby 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 Kathryn Libby reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
South Portland, ME 04106
- Reassigned Medicare billing, Maine enrollment
- 40 clinicians in this Medicare group
South Portland, ME 04106
- Reassigned Medicare billing, Maine enrollment
- Also billed through NPI 1922791417 (Maine)
- 3,140 clinicians in this Medicare group
Portland, ME 04102
- Reassigned Medicare billing, Maine enrollment
- 322 clinicians in this Medicare group
Machias, ME 04654
- Reassigned Medicare billing, Maine enrollment
- 83 clinicians in this Medicare group
Calais, ME 04619
- Reassigned Medicare billing, Maine enrollment
- Also billed through NPI 1922001049 (Maine)
- 94 clinicians in this Medicare group
Johnstown, CO 80534
- Reassigned Medicare billing, Virginia enrollment
- 88 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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northern Light Health
Acute Care Hospitals · Portland, MEMaine Medical Center
Acute Care Hospitals · Portland, MEMemorial Hospital, The
Critical Access Hospitals · North Conway, NHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04106 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 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SOUTH PORTLAND, ME 04106
SOUTH PORTLAND, ME 04106
SOUTH PORTLAND, ME 04106
SOUTH PORTLAND, ME 04106
SOUTH PORTLAND, ME 04106
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 Kathryn Libby's NPI number?
The NPI number for Kathryn Libby is 1689109423. It was assigned to this individual provider in the NPPES registry on May 1, 2017.
Where is Kathryn Libby located?
Kathryn Libby practices at 100 Foden Rd Ste 103, South Portland, ME 04106. The listed phone number is (207) 828-1122.
What is Kathryn Libby's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Kathryn Libby enrolled in Medicare?
Yes. Kathryn Libby 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 Kathryn Libby's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kathryn Libby reassigns Medicare benefits to 6 organizations: Chest Medicine Associates, PA (South Portland, ME), Mainehealth (South Portland, ME), Mercy Hospital (Portland, ME), Down East Community Hospital (Machias, ME), Calais Community Hospital (Calais, ME) 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 Kathryn Libby's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kathryn Libby accept?
Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Taro Health list Kathryn Libby 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.
Is Kathryn Libby affiliated with any hospitals?
According to CMS data, Kathryn Libby is affiliated with Northern Light Health, Maine Medical Center and Memorial Hospital, The.
When was this NPI record last updated?
The NPPES record for Kathryn Libby was last updated on June 27, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Kathryn Hess Libby · NPI 1689109423
Pulmonary Disease physician in South Portland, Maine. Individual provider, active in the CMS NPPES registry since May 1, 2017.
## Identity
- **NPI:** 1689109423 (Entity type: Individual)
- **Enumerated:** May 1, 2017
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** MD27841 (Maine)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 FODEN RD STE 103, South Portland, ME 04106-2327
- **Phone:** (207) 828-1122
## 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): Chest Medicine Associates, PA (NPI 1437255247, South Portland, ME); Mainehealth (NPI 1679887400, South Portland, ME); Mercy Hospital (NPI 1427313048, Portland, ME); Down East Community Hospital (NPI 1528087004, Machias, ME); Calais Community Hospital (NPI 1376546143, Calais, ME); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** June 27, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1689109423) · Data from the CMS NPPES public registry.