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MARISSA LAURA DIORIO FNP-C CRNP
NPI 1952273906
Nurse Practitioner in Wynnewood, PA

Active since September 19, 2025PECOS EnrolledAccepts Medicare Assignment
100 E LANCASTER AVE, SUITE 330 MOB WEST, WYNNEWOOD, PA 19096(610) 645-6555(610) 649-4744 Get Directions Write a Review

NPPES record last updated: January 9, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jan 9, 2026, Sep 19, 2025 (2 updates tracked since 2025).

About Marissa Laura Diorio Fnp-c Crnp NPPES

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

MARISSA LAURA DIORIO FNP-C CRNP (NPI 1952273906) is an individual nurse practitioner in Wynnewood, Pennsylvania, licensed in Pennsylvania (SP033506) and active in the NPI registry since September 2025. She is enrolled in Medicare PECOS, is affiliated with Bryn Mawr Hospital, and is a graduate of Other (2025).

NPPES Registry Identity

NPI1952273906
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMARISSA LAURA DIORIOCredential: FNP-C CRNP
Location Address100 E LANCASTER AVE, SUITE 330 MOB WESTWynnewood, PA 19096-3450
Mailing Address3803 W Chester Pike Ste 160Newtown Square, PA 19073-2336 · (610) 645-6555 · Fax (610) 649-4744
Phone(610) 645-6555
Fax(610) 649-4744
Sole ProprietorYes
Medical School CMSOtherGraduated 2025
Enumeration DateSeptember 19, 2025
Last NPPES UpdateJanuary 9, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 9, 2026
✔ NPI 1952273906 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 · SP033506
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 SP033506 (PA)
100 E LANCASTER AVE, Wynnewood, PA 19096
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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

Marissa Laura Diorio Fnp-c Crnp 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 ID3870082415
PECOS Enrollment IDI20251103000226
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.

Hospital Affiliations CMS Care Compare 2

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

Bryn Mawr Hospital

Acute Care Hospitals · Bryn Mawr, PA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390139
Location130 South Bryn Mawr AveBryn Mawr, PA 19010 · Montgomery County
Emergency services Birthing friendly

Main Line Hospital Lankenau

Acute Care Hospitals · Wynnewood, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390195
Location100 Lancaster AveWynnewood, PA 19096 · Montgomery County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19096 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.

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.

DR. AKHNUWKH JONES M.D.
Internal Medicine
100 E LANCASTER AVE
WYNNEWOOD, PA 19096
Montgomery County (610) 645-2000
AMANDA B CHRISTINI MD
Internal Medicine
100 E LANCASTER AVE, 4 PAVILION, SUITE 4303
WYNNEWOOD, PA 19096
Montgomery County (484) 476-6421
LAI KWAN LOUIE RPH
Pharmacist
100 E LANCASTER AVE, SUITE #12
WYNNEWOOD, PA 19096
Montgomery County (610) 658-8640
DANIEL WANG MD
Internal Medicine
100 E LANCASTER AVE, 4 PAVILION STE 4303
WYNNEWOOD, PA 19096
Montgomery County (484) 476-6421
SARAH TYRRELL CRNA
Nurse Anesthetist, Certified Registered
100 E LANCASTER AVE
WYNNEWOOD, PA 19096
Montgomery County (610) 645-2000
MARGARET MACK
Student in an Organized Health Care Education/Training Program
100 E LANCASTER AVE
WYNNEWOOD, PA 19096
Montgomery County (610) 642-3796
XIAOLING YU MD
Hospitalist
100 E LANCASTER AVE
WYNNEWOOD, PA 19096
Montgomery County (484) 476-6421
JONATHAN HONGYI CHEN MD
Student in an Organized Health Care Education/Training Program
100 E LANCASTER AVE
WYNNEWOOD, PA 19096
Montgomery County (484) 476-2000

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 Marissa Diorio's NPI number?

The NPI number for Marissa Diorio is 1952273906. It was assigned to this individual provider in the NPPES registry on September 19, 2025.

Where is Marissa Diorio located?

Marissa Diorio practices at 100 E Lancaster Ave Suite 330 Mob West, Wynnewood, PA 19096. The listed phone number is (610) 645-6555.

What is Marissa Diorio's specialty?

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

Is Marissa Diorio enrolled in Medicare?

Yes. Marissa Diorio 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 Marissa Diorio affiliated with any hospitals?

According to CMS data, Marissa Diorio is affiliated with Bryn Mawr Hospital and Main Line Hospital Lankenau.

When was this NPI record last updated?

The NPPES record for Marissa Diorio was last updated on January 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.