Quick answers
- Does Delia N. Sang accept Medicare assignment?
- Yes. Medicare's clinician data says Delia N. Sang 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 Delia N. Sang see?
- In 2024, CMS data shows 1,065 Original Medicare patients and 61,786 services for Delia N. Sang. This counts Original Medicare only and measures volume, not quality.
- What is Delia N. Sang's NPI number?
- 1508842634. 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 Delia N. Sang, 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 | 1,065 |
|---|---|
| Services billed to Medicare | 61,786 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Injection, faricimab-svoa, 0.1 mg (J2777)49,800 services
- Imaging of retina (92134)2,972 services
- Injection, aflibercept hd, 1 mg (J0177)2,088 services
- Injection of drug into eye (67028)1,634 services
- Photography of the retina (92250)1,446 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 pressure71%
- Arthritis46%
- Osteoporosis30%
- Chronic kidney disease25%
- Ischemic heart disease24%
Practice locations
Addresses where Delia N. Sang is enrolled with Medicare (CMS data updated October 2, 2026).
- 1101 Beacon StBrookline, MA 02446 (617) 731‑1760
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Brookline
Clinicians with the same Medicare primary specialty in Brookline, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 1975 (51 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508842634 |
| 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