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MICHAEL C RUDDY M.D.
NPI 1831138015
Specialist in Princeton Junction, NJ

Active since June 05, 2006PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
88 PRINCETON HIGHTSTOWN RD, SUITE 203, PRINCETON JUNCTION, NJ 08550(609) 750-7330(609) 750-7336 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Michael C Ruddy M.d. NPPES

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

MICHAEL C RUDDY M.D. (NPI 1831138015) is an individual specialist in Princeton Junction, New Jersey, licensed in New Jersey (MA31313) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with University Medical Center Of Princeton At Plainsboro, and is a graduate of Rutgers New Jersey Medical School (1974).

NPPES Registry Identity

NPI1831138015
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameMICHAEL C RUDDYCredential: M.D.
Location Address88 PRINCETON HIGHTSTOWN RD, SUITE 203Princeton Junction, NJ 08550-1100
Mailing Address88 Princeton Hightstown Rd, Suite 203Princeton Junction, NJ 08550-1100 · (609) 750-7330 · Fax (609) 750-7336
Phone(609) 750-7330
Fax(609) 750-7336
Sole ProprietorNo
Medical School CMSRutgers New Jersey Medical SchoolGraduated 1974
Enumeration DateJune 5, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1831138015 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in NJ · MA31313
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.
88 PRINCETON HIGHTSTOWN RD, Princeton Junction, NJ 08550
Open in Google Maps ↗

Other Identifiers 5

Other0305250000NJ · Amerihealth
Other08515008NJ · Cigna
Medicaid1214608NJ
Other1K7020NJ · Health Net
Other3144306NJ · Aetna

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

Michael C Ruddy M.d. 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 ID7214954452
PECOS Enrollment IDI20051027000670
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 Reassignment

Medicare enrollment records show Michael Ruddy reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Princeton Hypertension Nephrology Associates LLC
Same address
Specialist
88 PRINCETON HIGHTSTOWN RD, SUITE 203
Princeton Junction, NJ 08550
  • Reassigned Medicare billing, New Jersey enrollment
  • Medicare enrollment name: Princeton Hypertension-Nephrology Associates L L C
  • 7 clinicians in this Medicare group
NPI 1639124480 (609) 750-7330

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 6

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
332 services139 patients
Collection and interpretation of physical parameters stored in computers and/or transmitted by the patient and/or caregiver to qualified health care professional, requiring 30 minutes or more, per 30 days 99091
This service involves gathering and analyzing health data from a patient, which is digitally stored and sent to a healthcare professional. This may include heart rate, blood pressure, or blood sugar levels. The process takes at least 30 minutes and is repeated every 30 days.
214 services119 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
182 services114 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
19 services19 patients
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211
This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.
19 services19 patients
Ambulatory blood pressure monitoring, 1 day or longer, with recording, scanning analysis, interpretation, and report 93784
Ambulatory blood pressure monitoring is a test that keeps track of your blood pressure over 24 hours or more. A small device, worn on a belt, takes readings at set intervals. This data is analyzed to give a comprehensive report on your blood pressure patterns.
18 services18 patients

Hospital Affiliations CMS Care Compare

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

University Medical Center Of Princeton At Plainsboro

Acute Care Hospitals · Plainsboro, NJ
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310010
LocationOne-Five Plainsboro RoadPlainsboro, NJ 08536 · Middlesex County
Emergency services Birthing friendly

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
Quality97.79
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
4 suppliers25 claims2,040 services$0.26 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
3 suppliers23 claims23 services$15.96 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 19

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CAROL FRANCES SISTERHEN MA, LPC
Counselor (Professional)
88 PRINCETON HIGHTSTOWN RD
PRINCETON JUNCTION, NJ 08550
Mercer County (732) 694-7622
ALYSSA PACCIONE LAC
Counselor (Mental Health)
88 PRINCETON HIGHTSTOWN RD
PRINCETON JUNCTION, NJ 08550
Mercer County (732) 982-2888
PATRICIA KOCH
Social Worker
88 PRINCETON HIGHTSTOWN RD
PRINCETON JUNCTION, NJ 08550
Mercer County (609) 497-4900
MRS. DOMINIQUE VALERIE PIERCE-OCONNOR
Social Worker
88 PRINCETON HIGHTSTOWN RD, SUITE 202
PRINCETON JUNCTION, NJ 08550
Mercer County (609) 497-4900
VADIM A FINKIELSTEIN M.D.
Specialist
88 PRINCETON HIGHTSTOWN RD, SUITE 203
PRINCETON JUNCTION, NJ 08550
Mercer County (609) 750-7330
GRACE B BIALY M.D.
Specialist
88 PRINCETON HIGHTSTOWN RD, SUITE 203
PRINCETON JUNCTION, NJ 08550
Mercer County (609) 750-7330
PRINCETON CAREGIVERS INC
Home Health
88 PRINCETON HIGHTSTOWN RD, SUITE 202
PRINCETON JUNCTION, NJ 08550
Mercer County (609) 497-4900
SANDHYA CHINALA MD
Psychiatry & Neurology (Psychiatry)
88 PRINCETON HIGHTSTOWN RD
PRINCETON JUNCTION, NJ 08550
Mercer County (732) 982-2888

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 Michael Ruddy's NPI number?

The NPI number for Michael Ruddy is 1831138015. It was assigned to this individual provider in the NPPES registry on June 5, 2006.

Where is Michael Ruddy located?

Michael Ruddy practices at 88 Princeton Hightstown Rd Suite 203, Princeton Junction, NJ 08550. The listed phone number is (609) 750-7330.

What is Michael Ruddy's specialty?

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

Is Michael Ruddy enrolled in Medicare?

Yes. Michael Ruddy 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 organization bills Medicare for Michael Ruddy's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Ruddy reassigns Medicare benefits to Princeton Hypertension Nephrology Associates LLC (Princeton Junction, NJ). The 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 Michael Ruddy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Michael Ruddy affiliated with any hospitals?

According to CMS data, Michael Ruddy is affiliated with University Medical Center Of Princeton At Plainsboro.

When was this NPI record last updated?

The NPPES record for Michael Ruddy was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.