Mark Humayun, M.D.
NPI 1548322381 · Ophthalmology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Humayun, M.D. is a Ophthalmology Physician provider in Los Angeles, CA (NPI 1548322381).
Provider details
- NPI number
- 1548322381
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A52637 (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
418 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) |
|---|---|---|
| Imaging of Retina92134 | 168 | $26 |
| Established Patient Complete Exam of Visual System92014 | 126 | $80 |
| Injection of Drug Into Eye67028 | 89 | $97 |
| New Patient Complete Exam of Visual System92004 | 21 | $99 |
| Photography of the Retina92250 | 14 | $22 |
Typical Medicare-allowed amounts for these services range $22–$99 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$9,554 across 14 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
Registry dates
- Enumerated
- 2006-12-15
- Last updated
- 2023-11-27
- Certified
- 2020-08-25
Frequently asked questions
- What is Mark Humayun's NPI number?
- Mark Humayun's National Provider Identifier (NPI) is 1548322381, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Humayun's specialty?
- Mark Humayun is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Humayun located?
- Mark Humayun's practice location on file with NPPES is 1450 San Pablo St, Los Angeles, CA 90033-4668.
- What is Mark Humayun's phone number?
- The practice phone number listed in the NPPES registry for Mark Humayun is (323) 442-6311.
- Does Mark Humayun accept Medicare?
- Mark Humayun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Humayun's NPI active?
- Yes — Mark Humayun's NPI (1548322381) is active in the NPPES registry as of the last update on 2023-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.