Nasiem Umberg, OD
NPI 1578124715 · Optometrist · Ontario, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nasiem Umberg, OD is a Optometrist provider in Ontario, CA (NPI 1578124715).
Provider details
- NPI number
- 1578124715
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- Yes
- License
- OPT34241TLG (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 65 | 17 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 39 | 12 |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 19 | — |
| Bimatoprostbrand: Lumigan | 19 | — |
| Timolol Maleate | 19 | — |
| Cyclosporine | 17 | — |
| Erythromycin Basebrand: Erythromycin | 15 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$58 across 2 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
Additional practice locations (1)
- 13197 Central Ave Ste 101Chino, CA 91710-4178Phone: (909) 590-2073
Registry dates
- Enumerated
- 2019-06-27
- Last updated
- 2021-11-15
- Certified
- 2021-11-15
Frequently asked questions
- What is Nasiem Umberg's NPI number?
- Nasiem Umberg's National Provider Identifier (NPI) is 1578124715, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nasiem Umberg's specialty?
- Nasiem Umberg is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Nasiem Umberg located?
- Nasiem Umberg's practice location on file with NPPES is 3155 Sedona Ct Ste 100, Ontario, CA 91764-6558.
- What is Nasiem Umberg's phone number?
- The practice phone number listed in the NPPES registry for Nasiem Umberg is (096) 989-7809.
- Does Nasiem Umberg accept Medicare?
- Nasiem Umberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nasiem Umberg's NPI active?
- Yes — Nasiem Umberg's NPI (1578124715) is active in the NPPES registry as of the last update on 2021-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.