Tammy Wong
NPI 1346744414 · Sleep Medicine (Internal Medicine) Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Sleep Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Wong is a Sleep Medicine (Internal Medicine) Physician provider in Los Angeles, CA (NPI 1346744414).
Provider details
- NPI number
- 1346744414
- Entity type
- Individual
- Primary specialty
- Sleep Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A163917 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
928 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 309 | $101 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 234 | $101 |
| Sleep Study Including Heart Rate, Breathing, Airflow, and Effort95806 | 127 | $45 |
| Sleep Study in Sleep Lab (6 Years Or Older)95810 | 70 | $709 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 68 | $138 |
| Sleep Study in Sleep Lab With Continuous Airway Pressure (6 Years Or Older) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Suvorexantbrand: Belsomra | 50 | — |
| Zolpidem Tartrate | 33 | 11 |
| Zaleplon | 29 | 13 |
| Eszopiclone | 28 | — |
| Gabapentin | 28 | — |
| Modafinil | 25 | — |
| Doxepin Hcl | 23 | — |
| Lemborexant |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$514 across 13 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
- 2018-03-22
- Last updated
- 2022-10-14
- Certified
- 2022-10-14
Frequently asked questions
- What is Tammy Wong's NPI number?
- Tammy Wong's National Provider Identifier (NPI) is 1346744414, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Wong's specialty?
- Tammy Wong is listed in the NPPES registry with a primary specialty of Sleep Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Tammy Wong located?
- Tammy Wong's practice location on file with NPPES is 1520 San Pablo St Ste 1000, Los Angeles, CA 90033-5312.
- Does Tammy Wong accept Medicare?
- Tammy Wong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Wong's NPI active?
- Yes — Tammy Wong's NPI (1346744414) is active in the NPPES registry as of the last update on 2022-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.