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DUANE FREDERICKS M.D.
NPI 1184618886
Family Medicine - Obesity Medicine in South Orange, NJ

Active since September 08, 2005PECOS Enrolled
228 S ORANGE AVE, SOUTH ORANGE, NJ 07079(973) 821-5058(973) 821-5059 Get Directions Write a Review

NPPES record last updated: August 10, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 10, 2026, Jul 13, 2026, Oct 18, 2020 (3 updates tracked since 2020).

About Duane Fredericks M.d. NPPES

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

DUANE FREDERICKS M.D. (NPI 1184618886) is an individual obesity medicine provider in South Orange, New Jersey, licensed in New Jersey (25MA08928300) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1184618886
Entity TypeIndividualMale
Primary Taxonomy207QB0002X
Provider Legal NameDUANE FREDERICKSCredential: M.D.
Location Address228 S ORANGE AVESouth Orange, NJ 07079-2202
Mailing Address228 S Orange AveSouth Orange, NJ 07079-2202 · (973) 821-5058 · Fax (973) 821-5059
Phone(973) 821-5058
Fax(973) 821-5059
Sole ProprietorNo
Enumeration DateSeptember 8, 2005
Last NPPES UpdateAugust 10, 20263 updates tracked since enumeration
NPPES CertifiedAugust 10, 2026
✔ NPI 1184618886 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily Medicine · Obesity MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207QB0002X
License✔ Licensed in NJ · 25MA08928300
Definition
A family medicine physician who specializes in the treatment of obesity demonstrates competency in and a thorough understanding of the treatment of obesity and the genetic, biologic, environmental, social, and behavioral factors that contribute to obesity. The obesity medicine physician employs therapeutic interventions including diet, physical activity, behavioral change, and pharmacotherapy. The obesity medicine physician utilizes a comprehensive approach, and may include additional resources such as dietitians, exercise physiologists, mental health professionals and bariatric surgeons as indicated to achieve optimal results. Additionally, the obesity medicine physician maintains competency in providing pre- peri- and post-surgical care of bariatric surgery patients, promotes the prevention of obesity, and advocates for those who suffer from obesity.
228 S ORANGE AVE, South Orange, NJ 07079
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include 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 (PECOS)

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

Nilay Shah MD PC
16 mi
Neurology
255 W SPRING VALLEY AVE STE 102
Maywood, NJ 07607
  • Reassigned Medicare billing, New Jersey enrollment
  • 6 clinicians in this Medicare group
NPI 1578696605 (201) 880-8060

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 07079 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
$98.09 typical visit price
range $63.84 – $190.92
Typical copayment $24.52 (range $15.96 – $47.73)
Most-billed visit code 99203
Established Patient
$111.57 typical visit price
range $20.97 – $155.92
Typical copayment $27.89 (range $5.24 – $38.98)
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 6

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

OMEGA WEIGHT LOSS CENTER
Family Medicine (Obesity Medicine)
228 S ORANGE AVE
SOUTH ORANGE, NJ 07079
Essex County (973) 821-5058
DR. STEPHANIE EKEMEZIE DDS
Dentist
228 S ORANGE AVE
SOUTH ORANGE, NJ 07079
Essex County (937) 821-4959
DR. GAUTAM SEHGAL M.D.
Neuromusculoskeletal Medicine & OMM
228 S ORANGE AVE
SOUTH ORANGE, NJ 07079
Essex County (973) 761-4455
DR. NEIL ELLIS GOLDBERG D.P.M.
Podiatrist (Primary Podiatric Medicine)
228 S ORANGE AVE
SOUTH ORANGE, NJ 07079
Essex County (973) 762-9060
DR. JEFFREY NEIL KAPLAN D.P.M.
Podiatrist
228 S ORANGE AVE
SOUTH ORANGE, NJ 07079
Essex County (973) 762-9060
DR. HAPPINESS NWOBU DDS
Dentist (General Practice)
228 S ORANGE AVE
SOUTH ORANGE, NJ 07079
Essex County (973) 821-4959

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 Duane Fredericks's NPI number?

The NPI number for Duane Fredericks is 1184618886. It was assigned to this individual provider in the NPPES registry on September 8, 2005.

Where is Duane Fredericks located?

Duane Fredericks practices at 228 S Orange Ave, South Orange, NJ 07079. The listed phone number is (973) 821-5058.

What is Duane Fredericks's specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Obesity Medicine, with taxonomy code 207QB0002X.

Is Duane Fredericks enrolled in Medicare?

Yes. Duane Fredericks is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Duane Fredericks's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Duane Fredericks reassigns Medicare benefits to Nilay Shah MD PC (Maywood, 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 Duane Fredericks's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Duane Fredericks accept?

Health plans from Oscar Health list Duane Fredericks 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 Duane Fredericks was last updated on August 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.