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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. RONALD P WALSH JR. M.D.
NPI 1225271174
Pathology - Anatomic Pathology & Clinical Pathology in Valhalla, NY

Active since April 08, 2009PECOS Enrolled
100/100
CMS Quality Rating
100 WOODS RD, VALHALLA, NY 10595(914) 493-3672 Get Directions Write a Review

NPPES record last updated: October 15, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Oct 15, 2026, Apr 1, 2019, Jun 20, 2018 (3 updates tracked since 2018).

About Dr. Ronald P Walsh Jr. M.d. NPPES

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

DR. RONALD P WALSH JR. M.D. (NPI 1225271174) is an individual anatomic pathology & clinical pathology provider in Valhalla, New York, licensed in New Jersey (25MF00116800) and active in the NPI registry since April 2009. He is enrolled in Medicare PECOS, is affiliated with Robert Wood Johnson University Hospital, and is a graduate of Other (2003).

NPPES Registry Identity

NPI1225271174
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameDR. RONALD P WALSH JR.Credential: M.D.
Location Address100 WOODS RDValhalla, NY 10595-1530
Mailing Address794 Roble RdAllentown, PA 18109-9110 · (610) 402-8142 · Fax (610) 402-1691
Phone(914) 493-3672
Sole ProprietorNo
Medical School CMSOtherGraduated 2003
Enumeration DateApril 8, 2009
Last NPPES UpdateOctober 15, 20263 updates tracked since enumeration
NPPES CertifiedOctober 15, 2026
✔ NPI 1225271174 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
Licenses✔ Licensed in NJ · 25MF00116800✔ Licensed in PA · MD463782✔ Licensed in NY · 251874
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
Also ListedPathology · Blood Banking & Transfusion MedicineTaxonomy 207ZB0001X · License MD463782 (PA), 251874 (NY)
100 WOODS RD, Valhalla, NY 10595
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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 (PECOS)

Dr. Ronald P Walsh Jr. M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6406032341
PECOS Enrollment IDI20260521004293
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

6

Medicare enrollment records show Ronald Walsh reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Westchester Medical Center Advanced Physician Services PC
0.1 mi
Anesthesiology
100 WOODS RD, TAYLOR PAVILION - ROOM M229
Valhalla, NY 10595
  • Reassigned Medicare billing, New York enrollment
  • 1,663 clinicians in this Medicare group
NPI 1740687458 (914) 493-2844
St.Vincent' Hospital Westchester Psych
8.4 mi
Counseling
275 NORTH ST
Harrison, NY 10528
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: St Joseph's Hospital Yonkers
  • 233 clinicians in this Medicare group
NPI 1932400140 (914) 925-5333
Montefiore Medical Center
15 mi
Anesthesiology
111 E 210TH ST
Bronx, NY 10467
  • Reassigned Medicare billing, New York enrollment
  • 5,251 clinicians in this Medicare group
NPI 1063525152 (914) 378-6021
Rwjbh Observation Associates LLC
34 mi
Emergency Medicine
94 OLD SHORT HILLS RD
Livingston, NJ 07039
  • Reassigned Medicare billing, New Jersey enrollment
  • 1,913 clinicians in this Medicare group
NPI 1760095806 (888) 724-7123
Rutgers Health-Rwj Pediatric Critical Care
53 mi
Anesthesiology
125 PATERSON ST STE 5123
New Brunswick, NJ 08901
  • Reassigned Medicare billing, New Jersey enrollment
  • 492 clinicians in this Medicare group
NPI 1063420776 (732) 235-7246
Rwjbh Emergency Medicine Associates, LLC
53 mi
Emergency Medicine
3 EXECUTIVE DR, STE 400
Somerset, NJ 08873
  • Reassigned Medicare billing, New Jersey enrollment
  • 1,557 clinicians in this Medicare group
NPI 1912510041 (732) 867-9618

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

Hospital Affiliations CMS Care Compare

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

Robert Wood Johnson University Hospital

Acute Care Hospitals · New Brunswick, NJ
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310038
LocationOne Robert Wood Johnson PlaceNew Brunswick, NJ 08901 · Middlesex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10595 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability100
Improvement Activities40

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. EVE BLOCK MD
Internal Medicine (Hospice and Palliative Medicine)
100 WOODS RD
VALHALLA, NY 10595
Westchester County (914) 493-3112
MRS. LISA ANN SAUER N.P.
Nurse Practitioner (Neonatal, Critical Care)
100 WOODS RD
VALHALLA, NY 10595
Westchester County (914) 493-7000
KAREN FRANCOIS MD
Anesthesiology
100 WOODS RD
VALHALLA, NY 10595
Westchester County (914) 493-7000
KIMBERLY WILSON R.D.
Dietitian, Registered
100 WOODS RD
VALHALLA, NY 10595
Westchester County (914) 493-7664
RADHIKA VOLETI M.D
Internal Medicine
100 WOODS RD
VALHALLA, NY 10595
Westchester County (914) 493-7000
FAREENA NAWAZ MD
Internal Medicine
100 WOODS RD
VALHALLA, NY 10595
Westchester County (914) 493-7000
AUSTIN B CARPENTER
Student in an Organized Health Care Education/Training Program
100 WOODS RD
VALHALLA, NY 10595
Westchester County (914) 493-8795
AMRO AGLAN MD
Student in an Organized Health Care Education/Training Program
100 WOODS RD
VALHALLA, NY 10595
Westchester County (914) 493-7000

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 Walsh's NPI number?

The NPI number for Ronald Walsh is 1225271174. It was assigned to this individual provider in the NPPES registry on April 8, 2009.

Where is Ronald Walsh located?

Ronald Walsh practices at 100 Woods Rd, Valhalla, NY 10595. The listed phone number is (914) 493-3672.

What is Ronald Walsh's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Ronald Walsh enrolled in Medicare?

Yes. Ronald Walsh is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Ronald Walsh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ronald Walsh reassigns Medicare benefits to 6 organizations: Westchester Medical Center Advanced Physician Services PC (Valhalla, NY), St.Vincent' Hospital Westchester Psych (Harrison, NY), Montefiore Medical Center (Bronx, NY), Rwjbh Observation Associates LLC (Livingston, NJ), Rutgers Health-Rwj Pediatric Critical Care (New Brunswick, NJ) and 1 more organization, listed in the Medicare section above. 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 Ronald Walsh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Ronald Walsh affiliated with any hospitals?

According to CMS data, Ronald Walsh is affiliated with Robert Wood Johnson University Hospital.

When was this NPI record last updated?

The NPPES record for Ronald Walsh was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days 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.