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RONALD C FAGAN MD, PC
NPI 1023146198
Specialist in Farmingdale, NY

Active since March 01, 2007
4900 HEMPSTEAD TPKE, FARMINGDALE, NY 11735(516) 752-7000(516) 586-8644 Get Directions Write a Review

NPPES record last updated: September 2, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ronald C Fagan Md, Pc NPPES

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

RONALD C FAGAN MD, PC (NPI 1023146198) is a healthcare organization registered as a specialist in Farmingdale, New York and active in the NPI registry since March 2007. The organization lists Ronald C Fagan, Owner /president, as its authorized official.

NPPES Registry Identity

NPI1023146198
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameRONALD C FAGAN MD, PC
Location Address4900 HEMPSTEAD TPKEFarmingdale, NY 11735
Mailing Address4900 Hempstead TpkeFarmingdale, NY 11735 · (516) 752-7000 · Fax (516) 586-8644
Phone(516) 752-7000
Fax(516) 586-8644
Organization SubpartNo
Authorized OfficialRonald C FaganOwner /president · (718) 224-4100
Enumeration DateMarch 1, 2007
Last NPPES UpdateSeptember 2, 2015
✔ NPI 1023146198 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in NY · 178331
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
4900 HEMPSTEAD TPKE, Farmingdale, NY 11735
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Other Identifiers 1

Medicare ID-Type UnspecifiedW86971NY · Group #

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ronald C Fagan Md, Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

7

Medicare enrollment records show 7 clinicians reassign Medicare billing to Ronald C Fagan MD, PC, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 3 within 10 miles. They are listed nearest first.

Clinicians, nearest first (7)

Ronald Fagan, M.D.
Internal Medicine
NPI 1972524486
4900 HEMPSTEAD TPKE
Farmingdale, NY 11735
(516) 752-7000
✔ PECOS✔ Accepts MedicareSame address
Orlando Suarez, M.D.
Internal Medicine
NPI 1366773319
4900 HEMPSTEAD TPKE
Farmingdale, NY 11735
(516) 752-7000
✔ PECOS✔ Accepts MedicareSame address
Stuart Horowitz, DO
Family Practice
NPI 1972661155
99 GRAND AVE
Massapequa, NY 11758
(516) 541-9700
✔ PECOS✔ Accepts Medicare3.5 mi
Ovidiu Krausz, MD
Cardiovascular Disease (Cardiology)
NPI 1144281973
310 WOODS AVE SUITE 3
Oceanside, NY 11572
(646) 721-3327
✔ PECOS✔ Accepts Medicare11 mi
Paul Bonheim, M.D.
Interventional Radiology
NPI 1235139775
521 ROUTE 111
Hauppauge, NY 11788
(631) 265-9645
✔ PECOS16 mi
Jai Singh, M.D.
Internal Medicine
NPI 1609890771
1496 SAINT JOHNS PL
Brooklyn, NY 11213
(718) 552-2021
✔ PECOS✔ Accepts Medicare25 mi
Marc Rybstein, M.D.
Cardiovascular Disease (Cardiology)
NPI 1538393822
828 UTICA AVE
Brooklyn, NY 11203
(718) 303-0851
✔ PECOS✔ Accepts Medicare25 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 Ronald C Fagan MD, PC's NPI number?

The NPI number for Ronald C Fagan MD, PC is 1023146198. It was assigned to this organization in the NPPES registry on March 1, 2007.

Where is Ronald C Fagan MD, PC located?

Ronald C Fagan MD, PC is located at 4900 Hempstead Tpke, Farmingdale, NY 11735. The listed phone number is (516) 752-7000.

What is Ronald C Fagan MD, PC's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Ronald C Fagan MD, PC enrolled in Medicare?

Yes. Ronald C Fagan MD, PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ronald C Fagan MD, PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 4 Medicare specialties reassign their Medicare billing to Ronald C Fagan MD, 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. The largest specialties are Internal Medicine (3), Cardiovascular Disease (Cardiology) (2) and Family Practice (1). Of these, 2 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Ronald C Fagan MD, PC was last updated on September 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.