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DR. MARK ANDREW SIDEN DO
NPI 1679156582
Ophthalmology in Moorestown, NJ

Active since April 29, 2021PECOS EnrolledAccepts Medicare Assignment
509 S LENOLA RD BLDG 11A, MOORESTOWN, NJ 08057(856) 234-0222(856) 727-9518 Get Directions Write a Review

NPPES record last updated: August 22, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Dr. Mark Andrew Siden Do NPPES

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

DR. MARK ANDREW SIDEN DO (NPI 1679156582) is an individual ophthalmology provider in Moorestown, New Jersey, licensed in New Jersey (25MB12659700) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS and is a graduate of Philadelphia College Of Osteopathic Medicine (2021).

NPPES Registry Identity

NPI1679156582
Entity TypeIndividualMale
Primary Taxonomy207W00000X
Provider Legal NameDR. MARK ANDREW SIDENCredential: DO
Location Address509 S LENOLA RD BLDG 11AMoorestown, NJ 08057-1561
Mailing Address420 Mountain Ave Fl 4New Providence, NJ 07974-2736 · (908) 458-8333 · Fax (908) 967-5488
Phone(856) 234-0222
Fax(856) 727-9518
Sole ProprietorNo
Medical School CMSPhiladelphia College Of Osteopathic MedicineGraduated 2021
Enumeration DateApril 29, 2021
Last NPPES UpdateAugust 22, 2025
NPPES CertifiedAugust 22, 2025
✔ NPI 1679156582 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
License✔ Licensed in NJ · 25MB12659700
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
509 S LENOLA RD BLDG 11A, Moorestown, NJ 08057
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Oscar Health.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

Dr. Mark Andrew Siden Do 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 ID7911424437
PECOS Enrollment IDI20250508000990
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 Mark Siden reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Associated Retinal Consultants LLC
44 mi
Ophthalmology
1 CENTURIAN DR STE 114
Newark, DE 19713
  • Reassigned Medicare billing, New Jersey enrollment
  • 118 clinicians in this Medicare group
NPI 1164578894 (908) 458-8333

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 08057 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
$140.34 typical visit price
range $61.59 – $185.05
Typical copayment $35.08 (range $15.39 – $46.26)
Most-billed visit code 99204
Established Patient
$76.45 typical visit price
range $20.08 – $150.98
Typical copayment $19.11 (range $5.02 – $37.74)
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.

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 Mark Siden's NPI number?

The NPI number for Mark Siden is 1679156582. It was assigned to this individual provider in the NPPES registry on April 29, 2021.

Where is Mark Siden located?

Mark Siden practices at 509 S Lenola Rd Bldg 11A, Moorestown, NJ 08057. The listed phone number is (856) 234-0222.

What is Mark Siden's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Mark Siden enrolled in Medicare?

Yes. Mark Siden 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 Mark Siden's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Siden reassigns Medicare benefits to Associated Retinal Consultants LLC (Newark, DE). 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 Mark Siden's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Siden accept?

Health plans from Ambetter Health and Oscar Health list Mark Siden 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.

When was this NPI record last updated?

The NPPES record for Mark Siden was last updated on August 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.