What is Greg Blash's NPI number?

Greg Blash's National Provider Identifier (NPI) is 1215139704, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Greg Blash's specialty?

Greg Blash is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).

Where is Greg Blash located?

Greg Blash's practice location on file with NPPES is 2791 Green River Rd, Corona, CA 92882-7452.

What is Greg Blash's phone number?

The practice phone number listed in the NPPES registry for Greg Blash is (951) 279-3939.

Is Greg Blash's NPI active?

Yes — Greg Blash's NPI (1215139704) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Greg Blash, DDS

NPI 1215139704 · Dentist · Corona, CA

Greg Blash, DDS is a Dentist provider in Corona, CA (NPI 1215139704).

Provider details

NPI number: 1215139704
Entity type: Individual
Primary specialty: DentistDental Providers
Credential: DDS
Sex: Male
Sole proprietor: No
License: DG33910 (CA)

Practice location

2791 Green River Rd

#104

Corona, CA 92882-7452

Phone: (951) 279-3939

Fax: (951) 279-0914

Street-level locationGet directions

More CA providers

Mailing address

2791 Green River Rd

Corona, CA 92882-7452

Specialties & taxonomies

DentistPrimary122300000XLicense DG33910 (CA)
Dental Providers

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure33% of score
19 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
1 documented practice location
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 · 1 distinct drug on file.

Drug	Part D claims (2024)	Beneficiaries
Amoxicillin	20	16

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$205 across 8 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.

Enumerated: 2007-06-05
Last updated: 2007-07-08

Frequently asked questions

What is Greg Blash's NPI number?: Greg Blash's National Provider Identifier (NPI) is 1215139704, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Greg Blash's specialty?: Greg Blash is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).
Where is Greg Blash located?: Greg Blash's practice location on file with NPPES is 2791 Green River Rd, Corona, CA 92882-7452.
What is Greg Blash's phone number?: The practice phone number listed in the NPPES registry for Greg Blash is (951) 279-3939.
Is Greg Blash's NPI active?: Yes — Greg Blash's NPI (1215139704) is active in the NPPES registry as of the last update on 2007-07-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Frequently asked questions