Quick answers
- Does Sven-Christian Carlsson accept Medicare assignment?
- Yes. Medicare's clinician data says Sven-Christian Carlsson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Sven-Christian Carlsson see?
- In 2024, CMS data shows 751 Original Medicare patients and 971 services for Sven-Christian Carlsson. This counts Original Medicare only and measures volume, not quality.
- What is Sven-Christian Carlsson's NPI number?
- 1891008397. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Sven-Christian Carlsson, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 751 |
|---|---|
| Services billed to Medicare | 971 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)532 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)113 services
- Imaging of optic nerve (92133)60 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)50 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)46 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure70%
- Diabetes37%
- Arthritis34%
- Chronic kidney disease26%
- Ischemic heart disease23%
Practice locations
Addresses where Sven-Christian Carlsson is enrolled with Medicare (CMS data updated October 2, 2026).
- 1250 Hancock StQuincy, MA 02169 (617) 740‑0600
- 133 Brookline AveBoston, MA 02215 (617) 421‑1000
- 36 Shops at 5 WayPlymouth, MA 02360 (774) 608‑3700
Group practices
Medicare enrollment lists Sven-Christian Carlsson as a member of this group (CMS data updated October 2, 2026).
- Atrius Health Inc1,222 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Quincy
Clinicians with the same Medicare primary specialty in Quincy, MA — not a recommendation.
Other clinicians in Atrius Health Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | New England College Of Optometry |
| Graduation year | 2010 (16 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891008397 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians