CHESTER COUNTY RHEUMATOLOGY PC
NPI 1225214778
Internal Medicine - Rheumatology in West Chester, PA

Q: What is Chester County Rheumatology PC's NPI number?

The NPI number for Chester County Rheumatology PC is 1225214778. It was assigned to this organization in the NPPES registry on January 15, 2008.

Q: What is Chester County Rheumatology PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Active since January 15, 2008

795 E MARSHALL ST, SUITE 101, WEST CHESTER, PA 19380(610) 692-4666(610) 692-8261 Get Directions Write a Review

NPPES record last updated: January 15, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Chester County Rheumatology Pc NPPES

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

CHESTER COUNTY RHEUMATOLOGY PC (NPI 1225214778) is a healthcare organization registered as a rheumatology in West Chester, Pennsylvania and active in the NPI registry since January 2008. The organization lists Michael S Rosen, President, as its authorized official.

NPPES Registry Identity

NPI1225214778

Entity TypeOrganization

Primary Taxonomy207RR0500X

Legal Business NameCHESTER COUNTY RHEUMATOLOGY PC

Location Address795 E MARSHALL ST, SUITE 101West Chester, PA 19380-4400

Mailing Address795 E Marshall St, Suite 101West Chester, PA 19380-4400 · (610) 692-4666 · Fax (610) 692-8261

Phone(610) 692-4666

Fax(610) 692-8261

Organization SubpartNo

Authorized OfficialMichael S RosenPresident · (610) 692-4666

Enumeration DateJanuary 15, 2008

✔ NPI 1225214778 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

795 E MARSHALL ST, West Chester, PA 19380

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Chester County Rheumatology Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Chester County Rheumatology PC, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Michael Rosen, M.D.

Rheumatology

NPI 1619931672

795 E MARSHALL ST SUITE 101
West Chester, PA 19380

(610) 692-4666

✔ PECOS✔ Accepts MedicareSame address

Michael Jaworski, M.D.

Rheumatology

NPI 1013035492

1316 W ONTARIO ST RM 815
Philadelphia, PA 19140

(215) 707-3635

✔ PECOS✔ Accepts Medicare24 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Chester County Rheumatology PC's NPI number?

The NPI number for Chester County Rheumatology PC is 1225214778. It was assigned to this organization in the NPPES registry on January 15, 2008.

Where is Chester County Rheumatology PC located?

Chester County Rheumatology PC is located at 795 E Marshall St Suite 101, West Chester, PA 19380. The listed phone number is (610) 692-4666.

What is Chester County Rheumatology PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Chester County Rheumatology PC enrolled in Medicare?

Yes. Chester County Rheumatology PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Chester County Rheumatology PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Rheumatology, reassign their Medicare billing to Chester County Rheumatology PC. A 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 the clinician's services. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Chester County Rheumatology PC accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Chester County Rheumatology PC 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.

When was this NPI record last updated?

The NPPES record for Chester County Rheumatology PC was last updated on January 15, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.