MARY JELDERKS MD
NPI 1972164077
Internal Medicine - Rheumatology in Ridgewood, NJ
About Mary Jelderks Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY JELDERKS MD (NPI 1972164077) is an individual rheumatology provider in Ridgewood, New Jersey, licensed in New Jersey (25MA12465700) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS, is affiliated with Valley Hospital, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Mary Jelderks Md 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.
Medicare Billing Reassignment
Medicare enrollment records show Mary Jelderks reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Paramus, NJ 07652
- Reassigned Medicare billing, New Jersey enrollment
- 833 clinicians in this Medicare group
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.
Valley Hospital
Acute Care Hospitals · Paramus, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 07450 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
RIDGEWOOD, NJ 07450
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 Mary Jelderks's NPI number?
The NPI number for Mary Jelderks is 1972164077. It was assigned to this individual provider in the NPPES registry on June 28, 2019.
Where is Mary Jelderks located?
Mary Jelderks practices at 1200 E Ridgewood Ave Ste 306, Ridgewood, NJ 07450. The listed phone number is (201) 389-0096.
What is Mary Jelderks's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Mary Jelderks enrolled in Medicare?
Yes. Mary Jelderks 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 Mary Jelderks's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Jelderks reassigns Medicare benefits to Valley Physician Services PC (Paramus, 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 Mary Jelderks's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Jelderks accept?
Health plans from Oscar Health list Mary Jelderks 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.
Is Mary Jelderks affiliated with any hospitals?
According to CMS data, Mary Jelderks is affiliated with Valley Hospital.
When was this NPI record last updated?
The NPPES record for Mary Jelderks was last updated on January 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.
# Mary Jelderks, MD · NPI 1972164077
Rheumatology physician in Ridgewood, New Jersey. Individual provider, active in the CMS NPPES registry since June 28, 2019.
## Identity
- **NPI:** 1972164077 (Entity type: Individual)
- **Enumerated:** June 28, 2019
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** 25MA12465700 (New Jersey)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1200 E RIDGEWOOD AVE STE 306, Ridgewood, NJ 07450-3937
- **Phone:** (201) 389-0096
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Valley Physician Services PC (NPI 1467815928, Paramus, NJ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** January 21, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1972164077) · Data from the CMS NPPES public registry.