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JONATHAN K. MARX M.D.
NPI 1619991726
Radiology - Vascular & Interventional Radiology in Fulton, MD

Active since July 26, 2006PECOS EnrolledAccepts Medicare Assignment
96.44/100
CMS Quality Rating
7788 ELMWOOD RD, FULTON, MD 20759(973) 769-3444 Get Directions Write a Review

NPPES record last updated: January 26, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 26, 2023, Jul 21, 2022, Mar 17, 2018 (3 updates tracked since 2018).

About Jonathan K. Marx M.d. NPPES

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

JONATHAN K. MARX M.D. (NPI 1619991726) is an individual vascular & interventional radiology provider in Fulton, Maryland, licensed in Maryland (D64735) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Frederick Health Hospital, and is a graduate of Rutgers, Robert Woood Johnson Medical School (1998).

NPPES Registry Identity

NPI1619991726
Entity TypeIndividualMale
Primary Taxonomy2085R0204X
Provider Legal NameJONATHAN K. MARXCredential: M.D.
Location Address7788 ELMWOOD RDFulton, MD 20759-2503
Mailing Address7788 Elmwood RdFulton, MD 20759-2503 · (973) 769-3444
Phone(973) 769-3444
Sole ProprietorNo
Medical School CMSRutgers, Robert Woood Johnson Medical SchoolGraduated 1998
Enumeration DateJuly 26, 2006
Last NPPES UpdateJanuary 26, 20233 updates tracked since enumeration
NPPES CertifiedJanuary 26, 2023
✔ NPI 1619991726 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Vascular & Interventional RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0204X
License✔ Licensed in MD · D64735
Definition
A radiologist who diagnoses and treats diseases by various radiologic imaging modalities. These include fluoroscopy, digital radiography, computed tomography, sonography and magnetic resonance imaging.
7788 ELMWOOD RD, Fulton, MD 20759
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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 and accepts Medicare assignment

Jonathan K. Marx 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 ID8628074796
PECOS Enrollment IDI20061012000315
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

5

Medicare enrollment records show Jonathan Marx reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Professional Services Of Holy Cross
7.8 mi
Health Service
11700 BELTSVILLE DR STE 300
Beltsville, MD 20705
  • Reassigned Medicare billing, District of Columbia enrollment
  • 234 clinicians in this Medicare group
NPI 1841151438 (301) 557-1240
St Agnes Healthcare Inc
15 mi
Diagnostic Radiology
3449 WILKENS AVE, SUITE 102
Baltimore, MD 21229
  • Reassigned Medicare billing, Maryland enrollment
  • 372 clinicians in this Medicare group
NPI 1780615922 (667) 234-8675
Frederick Health Medical Group LLC
19 mi
Family Medicine
504 E RIDGEVILLE BLVD
Mount Airy, MD 21771
  • Reassigned Medicare billing, Maryland enrollment
  • 245 clinicians in this Medicare group
NPI 1114771862 (240) 215-6310
Lucidsolutions, Inc.
332 mi
Diagnostic Radiology
3535 OLENTANGY RIVER RD
Columbus, OH 43214
  • Reassigned Medicare billing, Maryland enrollment
NPI 1518594480 (614) 566-5000
Riverside Radiology And Interventional Associates Inc
332 mi
Diagnostic Radiology
3525 OLENTANGY RIVER RD, STE 5360
Columbus, OH 43214
  • Reassigned Medicare billing, Maryland enrollment
  • 2 clinicians in this Medicare group
NPI 1093718496 (614) 340-7747

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.

Frederick Health Hospital

Acute Care Hospitals · Frederick, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210005
Location400 West Seventh StFrederick, MD 21701 · Frederick County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20759 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
$94.08 typical visit price
range $60.73 – $183.44
Typical copayment $23.52 (range $15.18 – $45.86)
Most-billed visit code 99203
Established Patient
$75.47 typical visit price
range $19.60 – $149.17
Typical copayment $18.86 (range $4.90 – $37.29)
Most-billed visit code 99213
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.

96.44/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality83.43
Promoting Interoperability100
Improvement Activities40

Reported Quality Measures

Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
100%67 patients5/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
100%64 patients5/55-star benchmark: 100%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
80%64 patients4/55-star benchmark: 100%
Radiology: Exposure Dose or Time Reported for Procedures Using Fluoroscopy
Final reports for procedures using fluoroscopy that document radiation exposure indices, or exposure time and number of fluorographic images (if radiation exposure indices are not available)
100%120 patients5/55-star benchmark: 100%
Rate of Timely Documentation Transmission to Dialysis Unit/Referring Physician
Percentage of patients aged 18 years and older for whom documentation is sent to the dialysis unit or referring physician within two days of the procedure completion or consultation.
1%103 patients1/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
55%64 patients3/55-star benchmark: 79%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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 Jonathan Marx's NPI number?

The NPI number for Jonathan Marx is 1619991726. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Where is Jonathan Marx located?

Jonathan Marx practices at 7788 Elmwood Rd, Fulton, MD 20759. The listed phone number is (973) 769-3444.

What is Jonathan Marx's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.

Is Jonathan Marx enrolled in Medicare?

Yes. Jonathan Marx 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 organizations bill Medicare for Jonathan Marx's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jonathan Marx reassigns Medicare benefits to 5 organizations: Professional Services Of Holy Cross (Beltsville, MD), St Agnes Healthcare Inc (Baltimore, MD), Frederick Health Medical Group LLC (Mount Airy, MD), Lucidsolutions, Inc. (Columbus, OH) and Riverside Radiology And Interventional Associates Inc (Columbus, OH). 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 Jonathan Marx's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Jonathan Marx affiliated with any hospitals?

According to CMS data, Jonathan Marx is affiliated with Frederick Health Hospital.

When was this NPI record last updated?

The NPPES record for Jonathan Marx was last updated on January 26, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.