Kenneth Rieger, M.D.
NPI 1275559700 · Orthopaedic Surgery Physician · Chatham, NJ
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kenneth Rieger, M.D. is a Orthopaedic Surgery Physician provider in Chatham, NJ (NPI 1275559700).
Provider details
- NPI number
- 1275559700
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA08296300 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
470 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 165 | $96 |
| X-Ray of Lower and Sacral Spine, Minimum of 4 Views72110 | 126 | $57 |
| X-Ray of Upper Spine, 4-5 Views72050 | 47 | $59 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 47 | $118 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 29 | $132 |
| Partial Removal of Spine Bone With Release of Spinal Cord And/Or Nerves, Each Additional Segment63048 | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$197 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 70 Sparta Ave Ste 202Sparta, NJ 07871-1760Phone: (973) 635-0800Fax: (973) 635-3137
Registry dates
- Enumerated
- 2006-07-15
- Last updated
- 2026-02-18
- Certified
- 2026-02-18
Frequently asked questions
- What is Kenneth Rieger's NPI number?
- Kenneth Rieger's National Provider Identifier (NPI) is 1275559700, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kenneth Rieger's specialty?
- Kenneth Rieger is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Kenneth Rieger located?
- Kenneth Rieger's practice location on file with NPPES is 40 Main St, Chatham, NJ 07928-2431.
- What is Kenneth Rieger's phone number?
- The practice phone number listed in the NPPES registry for Kenneth Rieger is (973) 635-0800.
- Does Kenneth Rieger accept Medicare?
- Kenneth Rieger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kenneth Rieger's NPI active?
- Yes — Kenneth Rieger's NPI (1275559700) is active in the NPPES registry as of the last update on 2026-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.