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CATHARINE MARY ARMENTROUT FNP
NPI 1275834061
Nurse Practitioner in Southbridge, MA

Active since November 09, 2010PECOS EnrolledAccepts Medicare Assignment
100 SOUTH ST, SOUTHBRIDGE, MA 01550(508) 909-7735 Get Directions Write a Review

NPPES record last updated: March 18, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 18, 2026, Jul 24, 2020, Jan 29, 2019 and 1 more (4 updates tracked since 2016).

About Catharine Mary Armentrout Fnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CATHARINE MARY ARMENTROUT FNP (NPI 1275834061) is an individual nurse practitioner in Southbridge, Massachusetts, licensed in Massachusetts (RN2311164) and active in the NPI registry since November 2010. She is enrolled in Medicare PECOS, is affiliated with Umass Memorial Health - Harrington Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1275834061
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameCATHARINE MARY ARMENTROUTCredential: FNP
Location Address100 SOUTH STSouthbridge, MA 01550-4051
Mailing AddressPo Box 415348Boston, MA 02241-5348 · (800) 225-8885 · Fax (508) 334-1977
Phone(508) 909-7735
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateNovember 9, 2010
Last NPPES UpdateMarch 18, 20264 updates tracked since enumeration
NPPES CertifiedMarch 18, 2026
✔ NPI 1275834061 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in MA · RN2311164
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 336548 (NY)
100 SOUTH ST, Southbridge, MA 01550
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Secondary Practice Locations 2

Location 1707 E Main StMiddletown, NY 10940-2650 · Phone (845) 333-3370 · Fax (845) 333-3372
Location 268 Harris Bushville RdHarris, NY 12742 · Phone (845) 333-8484 · Fax (845) 794-5675

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Catharine Mary Armentrout Fnp 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.

PECOS PAC ID7113238916
PECOS Enrollment IDI20161020001869
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
80 services59 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Umass Memorial Health - Harrington Hospital

Acute Care Hospitals · Southbridge, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220019
Location100 South StreetSouthbridge, MA 01550 · Worcester County
Emergency services

Holyoke Medical Center

Acute Care Hospitals · Holyoke, MA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220024
Location575 Beech StreetHolyoke, MA 01040 · Hampden County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01550 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

EDWARD YE PA-C
Physician Assistant (Medical)
100 SOUTH ST
SOUTHBRIDGE, MA 01550
Worcester County (508) 765-9771
DR. KRISHNAVENI SIRIGADDI MD
Internal Medicine
100 SOUTH ST
SOUTHBRIDGE, MA 01550
Worcester County (508) 765-9771
DR. CARL JOHN VANDERPUTTEN DO
Emergency Medicine
100 SOUTH ST, HARRINGTON MEMORIAL HOSPITAL
SOUTHBRIDGE, MA 01550
Worcester County (508) 765-9771
DR. MARSHA KAY FEARING MD, MPH, MMSC.
Pediatrics
100 SOUTH ST, STE 102
SOUTHBRIDGE, MA 01550
Worcester County (508) 765-7860
MR. DOMINIC IDOKO MA
Counselor (Mental Health)
100 SOUTH ST
SOUTHBRIDGE, MA 01550
Worcester County (508) 765-9771
STEPHANIE RUIZ-GONZALEZ CRNA
Nurse Anesthetist, Certified Registered
100 SOUTH ST
SOUTHBRIDGE, MA 01550
Worcester County (508) 909-7799
MARY E FRISELLA MD
Internal Medicine (Cardiovascular Disease)
100 SOUTH ST
SOUTHBRIDGE, MA 01550
Worcester County (508) 764-6041
TAMMY JOHNSON
Counselor (Mental Health)
100 SOUTH ST
SOUTHBRIDGE, MA 01550
Worcester County (508) 765-9771

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 Catharine Armentrout's NPI number?

The NPI number for Catharine Armentrout is 1275834061. It was assigned to this individual provider in the NPPES registry on November 9, 2010.

Where is Catharine Armentrout located?

Catharine Armentrout practices at 100 South St, Southbridge, MA 01550. The listed phone number is (508) 909-7735.

What is Catharine Armentrout's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Catharine Armentrout enrolled in Medicare?

Yes. Catharine Armentrout 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.

Is Catharine Armentrout affiliated with any hospitals?

According to CMS data, Catharine Armentrout is affiliated with Umass Memorial Health - Harrington Hospital and Holyoke Medical Center.

When was this NPI record last updated?

The NPPES record for Catharine Armentrout was last updated on March 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.