Lynn Yen, MD
NPI 1528295821 · Psychiatry Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lynn Yen, MD is a Psychiatry Physician provider in Torrance, CA (NPI 1528295821).
Provider details
- NPI number
- 1528295821
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
185 Medicare services, 2024 (ranked within specialty)
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) |
|---|---|---|
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 153 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 32 | $139 |
Typical Medicare-allowed amounts for these services range $98–$139 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bupropion Hclbrand: Bupropion Xl | 221 | 19 |
| Quetiapine Fumarate | 189 | 21 |
| Alprazolam | 124 | 13 |
| Lorazepam | 119 | 16 |
| Duloxetine Hcl | 116 | 12 |
| Zolpidem Tartrate | 101 | 17 |
| Escitalopram Oxalate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-15
- Last updated
- 2015-08-05
Frequently asked questions
- What is Lynn Yen's NPI number?
- Lynn Yen's National Provider Identifier (NPI) is 1528295821, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lynn Yen's specialty?
- Lynn Yen is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Lynn Yen located?
- Lynn Yen's practice location on file with NPPES is 1000 W Carson St, Torrance, CA 90502-2004.
- What is Lynn Yen's phone number?
- The practice phone number listed in the NPPES registry for Lynn Yen is (310) 222-1648.
- Does Lynn Yen accept Medicare?
- Lynn Yen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lynn Yen's NPI active?
- Yes — Lynn Yen's NPI (1528295821) is active in the NPPES registry as of the last update on 2015-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.