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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.

JONATHAN MORRIS SIDEN MD
NPI 1093340168
Obstetrics & Gynecology in Flushing, NY

Active since March 09, 2020PECOS Enrolled
5645 MAIN ST, FLUSHING, NY 11355(718) 670-2000 Get Directions Write a Review

NPPES record last updated: October 12, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 12, 2026, Mar 9, 2020 (2 updates tracked since 2020).

About Jonathan Morris Siden Md NPPES

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

JONATHAN MORRIS SIDEN MD (NPI 1093340168) is an individual obstetrics & gynecology provider in Flushing, New York, licensed in New York (344134) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of University Of Michigan Medical School (2022).

NPPES Registry Identity

NPI1093340168
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameJONATHAN MORRIS SIDENCredential: MD
Location Address5645 MAIN STFlushing, NY 11355-5045
Mailing Address75 Francis StBoston, MA 02115-6106 · (617) 732-5500
Phone(718) 670-2000
Sole ProprietorNo
Medical School CMSUniversity Of Michigan Medical SchoolGraduated 2022
Enumeration DateMarch 9, 2020
Last NPPES UpdateOctober 12, 20262 updates tracked since enumeration
NPPES CertifiedOctober 12, 2026
✔ NPI 1093340168 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in NY · 344134✔ Licensed in MA · 292986
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
5645 MAIN ST, Flushing, NY 11355
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Secondary Practice Location 1

Location 175 Francis StBoston, MA 02115-6106 · Phone (617) 732-5500

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jonathan Morris Siden Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3971985912
PECOS Enrollment IDI20260831001614
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 Siden reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

New York Queens Medicine And Surgery, P.C.
Same address
Multi-Specialty
5645 MAIN ST
Flushing, NY 11355
  • Reassigned Medicare billing, New York enrollment
  • 645 clinicians in this Medicare group
NPI 1740792233 (718) 661-8706

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 11355 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
$153.13 typical visit price
range $67.00 – $201.98
Typical copayment $38.28 (range $16.75 – $50.49)
Most-billed visit code 99204
Established Patient
$82.96 typical visit price
range $21.62 – $163.52
Typical copayment $20.74 (range $5.40 – $40.88)
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.

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.

ANA M GHELECHKHANI PA
Physician Assistant (Medical)
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-2608
PEDRO XAVIER PALACIOS PA-C
Physician Assistant (Medical)
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-1000
DR. OSCAR ROLDAN
Anesthesiology
5645 MAIN ST
FLUSHING, NY 11355
Queens County (646) 962-9930
ALEXIS TORRES RODRIGUEZ
Internal Medicine (Infectious Disease)
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-1507
DR. BRENT HOCHSTEIN DO
Student in an Organized Health Care Education/Training Program
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-2000
DR. PRINCIE NANDINI ROY MD
Student in an Organized Health Care Education/Training Program
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-2000
ERIC CHROSTOWSKI
Student in an Organized Health Care Education/Training Program
5645 MAIN ST
FLUSHING, NY 11355
Queens County (718) 670-2000
PETER JAESUNG JO
Nurse Practitioner (Family)
5645 MAIN ST
FLUSHING, NY 11355
Queens County (917) 340-4637

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 Siden's NPI number?

The NPI number for Jonathan Siden is 1093340168. It was assigned to this individual provider in the NPPES registry on March 9, 2020.

Where is Jonathan Siden located?

Jonathan Siden practices at 5645 Main St, Flushing, NY 11355. The listed phone number is (718) 670-2000.

What is Jonathan Siden's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Jonathan Siden enrolled in Medicare?

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

Which organization bills Medicare for Jonathan Siden's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jonathan Siden reassigns Medicare benefits to New York Queens Medicine And Surgery, P.C. (Flushing, NY). 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 Siden'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 Siden was last updated on October 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.