Douglas Gellerman, MD
NPI 1639181530 · Specialist · West Hills, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Gellerman, MD is a Specialist provider in West Hills, CA (NPI 1639181530).
Provider details
- NPI number
- 1639181530
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G42777 (CA)
Specialties & taxonomies
Other Service Providers
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
1,130 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) |
|---|---|---|
| Established Patient Problem Focused Exam of Visual System92012 | 482 | $95 |
| Established Patient Complete Exam of Visual System92014 | 192 | $133 |
| Imaging of Retina92134 | 107 | $43 |
| Imaging of Optic Nerve92133 | 104 | $37 |
| Exam of Visual Field With Extended Testing92083 | 71 | $68 |
| New Patient Complete Exam of Visual System92004 | 69 | $157 |
| Photography of the Retina92250 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 295 | 121 |
| Timolol Maleate | 107 | 52 |
| Brimonidine Tartrate | 100 | 38 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 65 | 53 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 61 | 19 |
| Bimatoprostbrand: Lumigan | 50 | 17 |
| Azelastine Hcl | 49 | 35 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$342 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
- 2006-08-12
- Last updated
- 2013-11-04
Frequently asked questions
- What is Douglas Gellerman's NPI number?
- Douglas Gellerman's National Provider Identifier (NPI) is 1639181530, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Gellerman's specialty?
- Douglas Gellerman is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Douglas Gellerman located?
- Douglas Gellerman's practice location on file with NPPES is 7320 Woodlake Ave, West Hills, CA 91307-1468.
- What is Douglas Gellerman's phone number?
- The practice phone number listed in the NPPES registry for Douglas Gellerman is (818) 883-0112.
- Does Douglas Gellerman accept Medicare?
- Douglas Gellerman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Gellerman's NPI active?
- Yes — Douglas Gellerman's NPI (1639181530) is active in the NPPES registry as of the last update on 2013-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.