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MRS. CLARISSA LOUISE HARRINGTON RN
NPI 1033818869
Nurse Practitioner in Philadelphia, PA

Active since March 01, 2023PECOS EnrolledAccepts Medicare Assignment
1426 DICKINSON ST, PHILADELPHIA, PA 19146(269) 271-8914 Get Directions Write a Review

NPPES record last updated: July 10, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 10, 2025, Feb 5, 2024, Mar 1, 2023 (3 updates tracked since 2023).

About Mrs. Clarissa Louise Harrington Rn NPPES

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

MRS. CLARISSA LOUISE HARRINGTON RN (NPI 1033818869) is an individual nurse practitioner in Philadelphia, Pennsylvania, licensed in Pennsylvania (SP028815) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS, is affiliated with Mercy Catholic Medical Center- Mercy Fitzgerald, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1033818869
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMRS. CLARISSA LOUISE HARRINGTONCredential: RN
Location Address1426 DICKINSON STPhiladelphia, PA 19146-4842
Mailing Address23 N Delsea Dr Unit BClayton, NJ 08312-1637 · (856) 423-7700 · Fax (856) 423-0823
Phone(269) 271-8914
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateMarch 1, 2023
Last NPPES UpdateJuly 10, 20253 updates tracked since enumeration
NPPES CertifiedJuly 10, 2025
✔ NPI 1033818869 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 PA · SP028815
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 ListedRegistered NurseTaxonomy 163W00000X · License RN714427 (PA)
1426 DICKINSON ST, Philadelphia, PA 19146
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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

Mrs. Clarissa Louise Harrington Rn 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 ID5799136750
PECOS Enrollment IDI20240104001012
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.

Medicare Billing Reassignments

5

Medicare enrollment records show Clarissa Harrington reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

PA Rehab Associates PC
0.7 mi
Physical Medicine & Rehabilitation
2230 S BROAD ST
Philadelphia, PA 19145
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 8 clinicians in this Medicare group
NPI 1316902885 (215) 334-3869
Empower Healthcare
5.1 mi
Internal Medicine
600 S WYCOMBE AVE
Yeadon, PA 19050
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 2 clinicians in this Medicare group
NPI 1013795095 (610) 626-8065
Vitality Np Group LLC
17 mi
Nurse Practitioner
45 LOGGERS MILL RD
Horsham, PA 19044
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 36 clinicians in this Medicare group
NPI 1003453051 (732) 282-7200
Provider Partners Care Management LP
100 mi
Nurse Practitioner
8820 COLUMBIA 100 PKWY STE 430
Columbia, MD 21045
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 24 clinicians in this Medicare group
NPI 1013348028 (443) 275-9800
Infinite Medical PC
237 mi
Family Medicine
7 CREEK LN
Bristol, RI 02809
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 97 clinicians in this Medicare group
NPI 1407483175 (718) 964-6161

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 8

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 nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
314 services96 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
280 services102 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
144 services40 patients
Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes 99305
An initial nursing facility visit per day is a service where a healthcare professional spends about 35 minutes assessing a patient's health status. This includes reviewing medical history, conducting a physical exam, and developing a care plan based on the patient's needs.
108 services92 patients
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
62 services29 patients
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes 99307
A follow-up nursing facility visit per day typically lasts about 10 minutes. This service involves a healthcare professional checking on your health status, answering any questions you may have, and monitoring your progress. This routine check ensures your recovery is on track and any concerns are addressed promptly.
41 services29 patients

Hospital Affiliations CMS Care Compare

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

Mercy Catholic Medical Center- Mercy Fitzgerald

Acute Care Hospitals · Darby, PA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390156
Location1500 Lansdowne AveDarby, PA 19023 · Delaware County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19146 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
$92.69 typical visit price
range $59.88 – $180.99
Typical copayment $23.17 (range $14.97 – $45.24)
Most-billed visit code 99203
Established Patient
$105.21 typical visit price
range $19.30 – $147.29
Typical copayment $26.30 (range $4.82 – $36.82)
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.

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 Clarissa Harrington's NPI number?

The NPI number for Clarissa Harrington is 1033818869. It was assigned to this individual provider in the NPPES registry on March 1, 2023.

Where is Clarissa Harrington located?

Clarissa Harrington practices at 1426 Dickinson St, Philadelphia, PA 19146. The listed phone number is (269) 271-8914.

What is Clarissa Harrington's specialty?

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

Is Clarissa Harrington enrolled in Medicare?

Yes. Clarissa Harrington 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 Clarissa Harrington's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Clarissa Harrington reassigns Medicare benefits to 5 organizations: PA Rehab Associates PC (Philadelphia, PA), Empower Healthcare (Yeadon, PA), Vitality Np Group LLC (Horsham, PA), Provider Partners Care Management LP (Columbia, MD) and Infinite Medical PC (Bristol, RI). 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 Clarissa Harrington's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Clarissa Harrington affiliated with any hospitals?

According to CMS data, Clarissa Harrington is affiliated with Mercy Catholic Medical Center- Mercy Fitzgerald.

When was this NPI record last updated?

The NPPES record for Clarissa Harrington was last updated on July 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.