What is Emily Au's NPI number?

Emily Au's National Provider Identifier (NPI) is 1427583996, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Emily Au's specialty?

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

Where is Emily Au located?

Emily Au's practice location on file with NPPES is 380 Alabama St Apt 10, San Francisco, CA 94110-7401.

What is Emily Au's phone number?

The practice phone number listed in the NPPES registry for Emily Au is (310) 938-6767.

Does Emily Au accept Medicare?

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

Is Emily Au's NPI active?

Yes — Emily Au's NPI (1427583996) is active in the NPPES registry as of the last update on 2022-06-21.

IndividualActiveAccepts Medicare

Emily Au, MD

NPI 1427583996 · Emergency Medicine Physician · San Francisco, CA

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

Emily Au, MD is a Emergency Medicine Physician provider in San Francisco, CA (NPI 1427583996).

Provider details

NPI number: 1427583996
Entity type: Individual
Primary specialty: Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Emergency Medicine PhysicianPrimary207P00000XLicense A167400 (CA)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Profile Score

Established profile(59/100 index)

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

Registry tenure25% of score
9 yrs in NPPES registry
Profile completeness25% of score
83% of core fields populated
Practice footprint15% of score
5 documented practice locations
Medicare service volume (vs. specialty peers)25% of score
43 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)
Emergency Department Visit With High Level of Medical Decision Making99285	27	$197
Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010	16	$10

Typical Medicare-allowed amounts for these services range $10–$197 (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.

$82 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

380 Alabama St Apt 10

San Francisco, CA 94110-7401

Phone: (310) 938-6767

Street-level locationGet directions

More CA providers

Mailing address