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CAITLYN ELIZABETH O'BRIEN FNP-BC
NPI 1962100446
Nurse Practitioner - Family in Stoneham, MA

Active since February 23, 2023PECOS EnrolledAccepts Medicare Assignment
3 WOODLAND RD STE 217, STONEHAM, MA 02180(781) 395-2922(781) 393-8905 Get Directions Write a Review

NPPES record last updated: November 26, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Caitlyn Elizabeth O'brien Fnp-bc NPPES

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

CAITLYN ELIZABETH O'BRIEN FNP-BC (NPI 1962100446) is an individual family provider in Stoneham, Massachusetts, licensed in Massachusetts (RN2333093) and active in the NPI registry since February 2023. She is enrolled in Medicare PECOS, is affiliated with Winchester Hospital, and maintains a secondary practice location in Leominster.

NPPES Registry Identity

NPI1962100446
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameCAITLYN ELIZABETH O'BRIENCredential: FNP-BC
Location Address3 WOODLAND RD STE 217Stoneham, MA 02180-1711
Mailing Address2 Brentwood AveWilmington, MA 01887-3461 · (781) 835-8784
Phone(781) 395-2922
Fax(781) 393-8905
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateFebruary 23, 2023
Last NPPES UpdateNovember 26, 2024
NPPES CertifiedNovember 26, 2024
✔ NPI 1962100446 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in MA · RN2333093
3 WOODLAND RD STE 217, Stoneham, MA 02180
Open in Google Maps ↗

Secondary Practice Location 1

Location 179 Erdman Way Ste 101Leominster, MA 01453-1805 · Phone (978) 537-4805 · Fax (978) 537-2185

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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

Caitlyn Elizabeth O'brien Fnp-bc 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 ID8224493705
PECOS Enrollment IDI20230505001705
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 4

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.

Test for allergy using skin patch 95044
A skin patch test helps identify allergens causing skin reactions. Small patches with potential allergens are applied to your skin, usually on the back. After 48 hours, they are removed to check for reactions. It's a safe and effective way to diagnose allergies.
950 services12 patients
Professional service for multiple injections of allergen 95117
The professional service for multiple injections of allergens involves administering small doses of specific allergens into your body. This is done to help your immune system become less sensitive to them, reducing your allergic reaction over time. It's a safe, effective way to manage allergies.
105 services53 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
58 services54 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
43 services35 patients

Hospital Affiliations CMS Care Compare

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

Winchester Hospital

Acute Care Hospitals · Winchester, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220105
Location41 Highland AvenueWinchester, MA 01890 · Middlesex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02180 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
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALLERGY & ASTHMA PHYSICIANS PC
Allergy & Immunology (Allergy)
3 WOODLAND RD STE 217
STONEHAM, MA 02180
Middlesex County (781) 395-2922
ALLERGY & ASTHMA - PCPO LLC
Allergy & Immunology (Allergy)
3 WOODLAND RD STE 217
STONEHAM, MA 02180
Middlesex County (781) 395-2922
AAP - WPHO LLC
Allergy & Immunology (Allergy)
3 WOODLAND RD STE 217
STONEHAM, MA 02180
Middlesex County (781) 395-2922

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 Caitlyn O'brien's NPI number?

The NPI number for Caitlyn O'brien is 1962100446. It was assigned to this individual provider in the NPPES registry on February 23, 2023.

Where is Caitlyn O'brien located?

Caitlyn O'brien practices at 3 Woodland Rd Ste 217, Stoneham, MA 02180. The listed phone number is (781) 395-2922.

What is Caitlyn O'brien's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Caitlyn O'brien enrolled in Medicare?

Yes. Caitlyn O'brien 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.

What insurance does Caitlyn O'brien accept?

Health plans from Anthem Blue Cross and Blue Shield list Caitlyn O'brien 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 Caitlyn O'brien affiliated with any hospitals?

According to CMS data, Caitlyn O'brien is affiliated with Winchester Hospital.

When was this NPI record last updated?

The NPPES record for Caitlyn O'brien was last updated on November 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.