What is Brenda Hayakawa's NPI number?

Brenda Hayakawa's National Provider Identifier (NPI) is 1679527386, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Brenda Hayakawa's specialty?

Brenda Hayakawa is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Brenda Hayakawa located?

Brenda Hayakawa's practice location on file with NPPES is 1350 W Covina Blvd, San Dimas, CA 91773-3245.

What is Brenda Hayakawa's phone number?

The practice phone number listed in the NPPES registry for Brenda Hayakawa is (909) 599-6811.

Does Brenda Hayakawa accept Medicare?

Brenda Hayakawa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Brenda Hayakawa's NPI active?

Yes — Brenda Hayakawa's NPI (1679527386) is active in the NPPES registry as of the last update on 2007-07-18.

IndividualActiveAccepts Medicare

Brenda Hayakawa, MD

NPI 1679527386 · Emergency Medicine Physician · San Dimas, CA

Brenda Hayakawa, MD is a Emergency Medicine Physician provider in San Dimas, CA (NPI 1679527386).

Provider details

NPI number: 1679527386
Entity type: Individual
Primary specialty: Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: Yes
License: G63803 (CA)

Practice location

1350 W Covina Blvd

San Dimas, CA 91773-3245

Phone: (909) 599-6811

Fax: (818) 587-2493

Street-level locationGet directions

More CA providers

Mailing address

Po Box 4419

Woodland Hills, CA 91365-4419

Specialties & taxonomies

Emergency Medicine PhysicianPrimary207P00000XLicense G63803 (CA)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(91/100 index)

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

Registry tenure25% of score
20 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
649 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 methodology.

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)
Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010	243	$9
Emergency Department Visit With High Level of Medical Decision Making99285	215	$185
Emergency Department Visit With Moderate Level of Medical Decision Making99284	86	$128
Critical Care, First 30-74 Minutes99291	75	$229
X-Ray of Chest, 1 View71045	18	$9
Emergent Insertion of Breathing Tube Into Windpipe Using an Endoscope31500	12	$148

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Cephalexin	19	19
Methylprednisolone	14	14
Tramadol Hcl	14	14
Meclizine Hcl	12	12

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.

$18 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.

Enumerated: 2006-05-19
Last updated: 2007-07-18

Frequently asked questions

What is Brenda Hayakawa's NPI number?: Brenda Hayakawa's National Provider Identifier (NPI) is 1679527386, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Brenda Hayakawa's specialty?: Brenda Hayakawa is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Brenda Hayakawa located?: Brenda Hayakawa's practice location on file with NPPES is 1350 W Covina Blvd, San Dimas, CA 91773-3245.
What is Brenda Hayakawa's phone number?: The practice phone number listed in the NPPES registry for Brenda Hayakawa is (909) 599-6811.
Does Brenda Hayakawa accept Medicare?: Brenda Hayakawa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Brenda Hayakawa's NPI active?: Yes — Brenda Hayakawa's NPI (1679527386) is active in the NPPES registry as of the last update on 2007-07-18.

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

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)
Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010	243	$9
Emergency Department Visit With High Level of Medical Decision Making99285	215	$185
Emergency Department Visit With Moderate Level of Medical Decision Making99284	86	$128
Critical Care, First 30-74 Minutes99291	75	$229
X-Ray of Chest, 1 View71045	18	$9
Emergent Insertion of Breathing Tube Into Windpipe Using an Endoscope31500	12	$148

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Cephalexin	19	19
Methylprednisolone	14	14
Tramadol Hcl	14	14
Meclizine Hcl	12	12

Transparency — industry payments

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

$18 across 1 record (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments