Marc Segall, M.D.
NPI 1326151531 · Ophthalmology Physician · Downey, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Segall, M.D. is a Ophthalmology Physician provider in Downey, CA (NPI 1326151531).
Provider details
- NPI number
- 1326151531
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G23733 (CA)
Specialties & taxonomies
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,830 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) |
|---|---|---|
| Extended Exam of the Back Part of the Eye With Optic Nerve Drawing92202 | 714 | $17 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 301 | $114 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 257 | $162 |
| Extended Exam of the Back Part of the Eye With Optic Nerve Drawing92202 | 200 | $15 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 99 | $114 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$145 across 1 record (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
Registry dates
- Enumerated
- 2006-08-15
- Last updated
- 2007-07-09
Frequently asked questions
- What is Marc Segall's NPI number?
- Marc Segall's National Provider Identifier (NPI) is 1326151531, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Segall's specialty?
- Marc Segall is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Segall located?
- Marc Segall's practice location on file with NPPES is 11411 Brookshire Ave, Downey, CA 90241-5003.
- What is Marc Segall's phone number?
- The practice phone number listed in the NPPES registry for Marc Segall is (562) 862-7347.
- Does Marc Segall accept Medicare?
- Marc Segall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Segall's NPI active?
- Yes — Marc Segall's NPI (1326151531) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.