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KENNETH J RIEGER M.D.
NPI 1275559700
Orthopaedic Surgery in Chatham, NJ

Active since July 15, 2006PECOS EnrolledAccepts Medicare Assignment
77.43/100
CMS Quality Rating
40 MAIN ST, CHATHAM, NJ 07928(973) 635-0800(973) 635-6254 Get Directions Write a Review

NPPES record last updated: February 18, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jun 4, 2024, Mar 7, 2023 (2 updates tracked since 2023).

About Kenneth J Rieger M.d. NPPES

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

KENNETH J RIEGER M.D. (NPI 1275559700) is an individual orthopaedic surgery provider in Chatham, New Jersey, licensed in New Jersey (25MA08296300) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Morristown Medical Center, and maintains a secondary practice location in Sparta.

NPPES Registry Identity

NPI1275559700
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameKENNETH J RIEGERCredential: M.D.
Location Address40 MAIN STChatham, NJ 07928-2431
Mailing Address40 Main StChatham, NJ 07928-2431 · (973) 635-0800 · Fax (973) 635-6254
Phone(973) 635-0800
Fax(973) 635-6254
Sole ProprietorNo
Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 2001
Enumeration DateJuly 15, 2006
Last NPPES UpdateFebruary 18, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 18, 2026
✔ NPI 1275559700 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in NJ · 25MA08296300
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
Also ListedOrthopaedic Surgery · Orthopaedic Surgery of the SpineTaxonomy 207XS0117X · License 25MA08579500 (NJ)
40 MAIN ST, Chatham, NJ 07928
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Secondary Practice Location 1

Location 170 Sparta Ave Ste 202Sparta, NJ 07871-1760 · Phone (973) 635-0800 · Fax (973) 635-3137

Other Identifiers 15

Other000000485768KY · Anthem
Other000000495770KY · Anthem (univ Ortho Assoc)
Other01062330BIN · Csr
Medicaid200828910IN
Other2785649000KY · Passport Advantage
Other01062330AIN · Phys.license
Other2785663000KY · Passport Advantage (uoa)
Other50012859KY · Passport (univ Ortho Asso
Other50012858KY · Passport (spine Institute
Other25MA08296300NJ · License
Other40285KY · Physician License
Medicaid64125370KY
OtherBR9641172IN · Dea
OtherP00384745KY · Railroad Medicare
OtherBR9816717KY · Dea

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Kenneth J Rieger M.d. 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 ID5092811620
PECOS Enrollment IDI20071017000225
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.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
165 services111 patients
X-ray of lower and sacral spine, minimum of 4 views 72110
An X-ray of the lower and sacral spine involves capturing images of your lower back and tailbone area. It helps in identifying issues like fractures, arthritis, or other abnormalities. At least four different angles or 'views' are taken to get a comprehensive picture.
126 services112 patients
X-ray of upper spine, 4-5 views 72050
An X-ray of the upper spine with 4-5 views is a non-invasive imaging test. It uses radiation to capture detailed images of the bones and structures in your neck and upper back. This procedure helps identify issues like fractures, infections, or deformities.
47 services31 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
47 services47 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
29 services26 patients
Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment 63048
This procedure involves the partial removal of a bone in your spine to alleviate pressure on your spinal cord or nerves. It may be performed on multiple spine segments depending on your condition. The aim is to improve mobility and reduce pain or discomfort.
21 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Morristown Medical Center

Acute Care Hospitals · Morristown, NJ
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310015
Location100 Madison AveMorristown, NJ 07960 · Morris County
Emergency services Birthing friendly

Newton Medical Center

Acute Care Hospitals · Newton, NJ
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310028
Location175 High StNewton, NJ 07860 · Sussex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07928 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
$79.09 typical visit price
range $20.97 – $155.92
Typical copayment $19.77 (range $5.24 – $38.98)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

77.43/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality70.96
Promoting Interoperability78
Improvement Activities40

Reported Quality Measures

Closing the Referral Loop: Receipt of Specialist Report
91%78 patients5/55-star benchmark: 87%
Documentation of Current Medications in the Medical Record
89%1,269 patients4/55-star benchmark: 100%
Patient-Centered Surgical Risk Assessment and Communication
74%91 patients3/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
98%795 patients4/55-star benchmark: 100%
Preventive Care and Screening: Unhealthy Alcohol Use: Screening & Brief Counseling
Patients combinedPopulations: 100% · 548 patients
Patients screened: 100% · 548 patients
30%40 patients
Provide Patients Electronic Access to Their Health Information
70%907 patients2/55-star benchmark: 100%
Use of High-Risk Medications in Older Adults
Lower rates are better for this measure.
Patients appropriateDiagnosis: 0% · 264 patients
Patients totalRate: 0% · 264 patients
0%248 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

DR. STEVEN GARY DORSKY MD
Specialist
40 MAIN ST
CHATHAM, NJ 07928
Morris County (973) 635-0800
ARTHUR SHEVARDNADZE
Physical Therapist
40 MAIN ST
CHATHAM, NJ 07928
Morris County (973) 635-2800
MICHAEL ROGER MONFETT M.D.
Pain Medicine (Pain Medicine)
40 MAIN ST
CHATHAM, NJ 07928
Morris County (973) 635-0800
NEW JERSEY SPINE CENTER, LLC
Durable Medical Equipment & Medical Supplies
40 MAIN ST
CHATHAM, NJ 07928
Morris County (973) 635-0800
DR. JOHN ZACHARY SHUMKO M.D.
Physical Medicine & Rehabilitation
40 MAIN ST
CHATHAM, NJ 07928
Morris County (973) 635-0800
MRS. KIMBERLY L HANLEY P.T.
Physical Therapist
40 MAIN ST
CHATHAM, NJ 07928
Morris County (973) 635-2800
MATTHEW P CASSELLS PHYSICIAN ASSISTANT
Physician Assistant (Surgical)
40 MAIN ST, NEW JERSEY SPINE CENTER
CHATHAM, NJ 07928
Morris County (973) 635-0800
SUMMIT INTRAOPERATIVE NEUROMONITORING
Specialist/Technologist, Other (Electroneurodiagnostic)
40 MAIN ST
CHATHAM, NJ 07928
Morris County (973) 635-6403

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 Kenneth Rieger's NPI number?

The NPI number for Kenneth Rieger is 1275559700. It was assigned to this individual provider in the NPPES registry on July 15, 2006.

Where is Kenneth Rieger located?

Kenneth Rieger practices at 40 Main St, Chatham, NJ 07928. The listed phone number is (973) 635-0800.

What is Kenneth Rieger's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Kenneth Rieger enrolled in Medicare?

Yes. Kenneth Rieger 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.

Is Kenneth Rieger affiliated with any hospitals?

According to CMS data, Kenneth Rieger is affiliated with Morristown Medical Center and Newton Medical Center.

When was this NPI record last updated?

The NPPES record for Kenneth Rieger was last updated on February 18, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.