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DR. JONATHAN MARK GORDON M.D.
NPI 1124057005
Internal Medicine in Ridgefield, CT

Active since July 02, 2006PECOS Enrolled
21 SOUTH ST, RIDGEFIELD, CT 06877(203) 438-6541 Get Directions Write a Review

NPPES record last updated: August 19, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Jonathan Mark Gordon M.d. NPPES

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

DR. JONATHAN MARK GORDON M.D. (NPI 1124057005) is an individual internal medicine provider in Ridgefield, Connecticut, licensed in Connecticut (017998) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1124057005
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JONATHAN MARK GORDONCredential: M.D.
Location Address21 SOUTH STRidgefield, CT 06877-4102
Mailing Address21 South StRidgefield, CT 06877-4102 · (203) 438-6541
Phone(203) 438-6541
Sole ProprietorNo
Enumeration DateJuly 2, 2006
Last NPPES UpdateAugust 19, 2016
✔ NPI 1124057005 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 017998
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License 017998 (CT)
21 SOUTH ST, Ridgefield, CT 06877
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Other Identifiers 2

Medicaid1179985CT
Medicare UPINC08007CT

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Jonathan Mark Gordon M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Jonathan Gordon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Danbury Hospital
8.3 mi
End-Stage Renal Disease (ESRD) Treatment
24 HOSPITAL AVE, NELSON GELFMAN, MD., DIALYSIS UNIT
Danbury, CT 06810
  • Reassigned Medicare billing, Connecticut enrollment
  • 155 clinicians in this Medicare group
NPI 1184649667 (203) 797-7382

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06877 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
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
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.

Other Providers at the Same Location NPPES 8

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

ENA NANIC MD
Family Medicine
21 SOUTH ST
RIDGEFIELD, CT 06877
Western Connecticut Planning Region (516) 255-8414
KATHLEEN CLAIRE MCAULIFFE FNP- BC
Nurse Practitioner (Family)
21 SOUTH ST
RIDGEFIELD, CT 06877
Western Connecticut Planning Region (203) 438-6541
IONUT A. MOSTEANU M.D.
Internal Medicine
21 SOUTH ST
RIDGEFIELD, CT 06877
Western Connecticut Planning Region (203) 438-6541
SATOKO KANAHARA MD
Internal Medicine
21 SOUTH ST
RIDGEFIELD, CT 06877
Western Connecticut Planning Region (203) 438-6541
JAY D'ORSO MD
Internal Medicine
21 SOUTH ST
RIDGEFIELD, CT 06877
Western Connecticut Planning Region (203) 438-6541
SIOBHAN MEYER APRN, FNP-BC
Nurse Practitioner
21 SOUTH ST
RIDGEFIELD, CT 06877
Western Connecticut Planning Region (203) 438-1323
DEBRA MORTON
Social Worker (Clinical)
21 SOUTH ST
RIDGEFIELD, CT 06877
Western Connecticut Planning Region (203) 438-6541
DR. WEIMING LI M.D.
Internal Medicine
21 SOUTH ST
RIDGEFIELD, CT 06877
Western Connecticut Planning Region (203) 438-6541

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 Gordon's NPI number?

The NPI number for Jonathan Gordon is 1124057005. It was assigned to this individual provider in the NPPES registry on July 2, 2006.

Where is Jonathan Gordon located?

Jonathan Gordon practices at 21 South St, Ridgefield, CT 06877. The listed phone number is (203) 438-6541.

What is Jonathan Gordon's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Jonathan Gordon enrolled in Medicare?

Yes. Jonathan Gordon is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Jonathan Gordon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jonathan Gordon reassigns Medicare benefits to Danbury Hospital (Danbury, CT). 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 Jonathan Gordon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Jonathan Gordon was last updated on August 19, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.