Stephen Klein, MD
NPI 1154355212 · Diagnostic Radiology Physician · Hartford, CT
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Klein, MD is a Diagnostic Radiology Physician provider in Hartford, CT (NPI 1154355212).
Provider details
- NPI number
- 1154355212
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 070573 (MA)
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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
618 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 322 | $9 |
| Screening Mammography77067 | 77 | $54 |
| Screening 3d Breast Mammography77063 | 74 | $33 |
| X-Ray of Chest, 1 View71045 | 34 | $9 |
| Diagnostic Digital Breast Tomosynthesis, Unilateral Or Bilateral (list Separately in Addition to 77065 Or 77066)G0279 | 19 | $30 |
| X-Ray of Chest, 2 Views71046 | 18 | $31 |
Practice location
Mailing address
Additional practice locations (1)
- 111 Founders PlzSuite 400East Hartford, CT 06108-3212Phone: (860) 289-3375Fax: (860) 783-5733
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2018-03-17
Frequently asked questions
- What is Stephen Klein's NPI number?
- Stephen Klein's National Provider Identifier (NPI) is 1154355212, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Klein's specialty?
- Stephen Klein is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Klein located?
- Stephen Klein's practice location on file with NPPES is 85 Seymour St Ste 200, Hartford, CT 06106-5509.
- What is Stephen Klein's phone number?
- The practice phone number listed in the NPPES registry for Stephen Klein is (860) 546-6589.
- Does Stephen Klein accept Medicare?
- Stephen Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Klein's NPI active?
- Yes — Stephen Klein's NPI (1154355212) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.