KENNETH J RIEGER (M.D.) – Orthopaedic Surgery Physician, NPI 1275559700

KENNETH J RIEGER (M.D.) is a healthcare provider. based in Chatham, New Jersey. specializing in ORTHOPEDIC SURGERY. They hold the professional credentials M.D.. They hold a License No. 25MA08296300 (NJ). The NPI Number for KENNETH J RIEGER (M.D.) is 1275559700

Main info

Male
25 Years Of Experience
Accepts Medicare Assignment
Name
KENNETH J RIEGER (M.D.)
NPI
1275559700
Phone
(973) 635-0800
Address
40 MAIN ST
Enumeration Date
15 July 2006
Last Update Date
18 February 2026

Doctor Profile

Medical School Name
COLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Secondary Phone
9736350800
Graduation Year
2001 (25 years ago)
PAC ID
5092811620
Group Practice PAC ID
5092785030
Professional Enrollment ID
I20071017000225
Address ID
NJ079282431CH40XXXSTXX300

Contacts

Secure Messaging
krieger@njspinecenter.medentdirect.com
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience71
Completeness95
Years active:19State licenses:2Other names

917 ORTHOPEDIC SURGERY in NJ

Provider Addresses for KENNETH J RIEGER (M.D.)

  • 40, Main Street, Ridgetown, Chatham-Kent, Southwestern Ontario, Ontario, N0P 2C0, Canada

    CHATHAM, NJ 079282431

    Phone: (973) 635-0800

    Fax: (973) 635-6254

    Type: Mailing

  • 70 Sparta Ave Ste 202

    Sparta, NJ 078711760

    Phone: (973) 635-0800

    Fax: (973) 635-3137

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 2 Open Payments records for all available years, with a total value of $197.

Total Amount is formed as General ($197) + Research ($0) + Ownership ($0) = $197.

Last reported payment date: 2024-10-02 • Largest payer in this snapshot: Alphatec Spine, Inc ($147).

Total Amount

$197

General + Research + Ownership

Payments

2

Total payment records

General Amount

$197

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-10-02

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2007-10-17

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20071017000225IOrthopedic SurgeryNJTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99213Established patient office or other outpatient visit, 20-29 minutes11883$0
72110X-ray of lower and sacral spine, minimum of 4 views11297$0
99203New patient office or other outpatient visit, 30-44 minutes6767$0
63048Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment3217$0
72050X-ray of upper spine, 4-5 views2726$0
View full utilization report →

Insurance plans in this area (ZIP 07928)

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Provider's Procedures

KENNETH J RIEGER (M.D.) performs procedures in ORTHOPEDIC SURGERY. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
ORTHOPEDIC SURGERYNJ63048Partial removal of spine bone with release of spinal cord and/or nerves3018

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 5092785030View full group profile
NameSpecialtyState
Nurse PractitionerNJ
-NJ
Physical Medicine And RehabilitationNY
Physical Medicine And RehabilitationNJ
Physician AssistantNJ
Orthopedic SurgeryNJ
Physician AssistantNJ
Physician AssistantNJ
Orthopedic SurgeryNJ
Physical Medicine And Rehabilitation, Interventional Pain Management, Pain ManagementNJ

Reviews

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Frequently asked questions

What is the 10-digit NPI for KENNETH J RIEGER (M.D.)?
KENNETH J RIEGER (M.D.) — NPI 1275559700 — is the standard way to identify this listing.
Does the file indicate KENNETH J RIEGER (M.D.) is practicing under active NPI?
Directory data currently reports KENNETH J RIEGER (M.D.) as active.
What is KENNETH J RIEGER (M.D.)'s primary classification?
Orthopaedic Surgery Physician is the headline specialty for KENNETH J RIEGER (M.D.) here. Clinical services aligned with this taxonomy classification.
Does KENNETH J RIEGER (M.D.) list a practice location?
Patients near Chatham, New Jersey may find KENNETH J RIEGER (M.D.) in results; validate coverage separately.
Is specialty guaranteed by NPI alone?
Taxonomy selections describe intent; scope of practice still follows state law.

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