Tammy Auyeung, PA-C
NPI 1891137618 · Physician Assistant · La Jolla, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Auyeung, PA-C is a Physician Assistant provider in La Jolla, CA (NPI 1891137618).
Provider details
- NPI number
- 1891137618
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA63774 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 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
107 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) |
|---|---|---|
| Drainage of Fluid From Abdominal Cavity Using Imaging Guidance49083 | 55 | $91 |
| Fine Needle Aspiration Biopsy Using Ultrasound Guidance, First Growth10005 | 31 | $62 |
| Ultrasonic Guidance for Needle Placement76942 | 21 | $26 |
Typical Medicare-allowed amounts for these services range $26–$91 (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.
$785 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-07-22
- Last updated
- 2024-05-28
- Certified
- 2024-05-28
Frequently asked questions
- What is Tammy Auyeung's NPI number?
- Tammy Auyeung's National Provider Identifier (NPI) is 1891137618, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Auyeung's specialty?
- Tammy Auyeung is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tammy Auyeung located?
- Tammy Auyeung's practice location on file with NPPES is 10666 N Torrey Pines Rd, La Jolla, CA 92037-1027.
- What is Tammy Auyeung's phone number?
- The practice phone number listed in the NPPES registry for Tammy Auyeung is (858) 554-9021.
- Does Tammy Auyeung accept Medicare?
- Tammy Auyeung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Auyeung's NPI active?
- Yes — Tammy Auyeung's NPI (1891137618) is active in the NPPES registry as of the last update on 2024-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.