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STEPHANIE YEN MD
NPI 1699154237
Emergency Medicine in San Diego, CA

Active since May 28, 2015PECOS EnrolledAccepts Medicare Assignment
300 FIR ST FL 1, SAN DIEGO, CA 92101(619) 446-1575 Get Directions Write a Review

NPPES record last updated: May 11, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: May 11, 2026, Jun 11, 2025, Aug 6, 2024 and 2 more (5 updates tracked since 2019).

About Stephanie Yen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEPHANIE YEN MD (NPI 1699154237) is an individual emergency medicine provider in San Diego, California, licensed in California (A155640) and active in the NPI registry since May 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1699154237
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameSTEPHANIE YENCredential: MD
Location Address300 FIR ST FL 1San Diego, CA 92101-2327
Mailing Address300 Fir St Fl 1San Diego, CA 92101-2327 · (619) 446-1575
Phone(619) 446-1575
Sole ProprietorYes
Medical School CMSOtherGraduated 2018
Enumeration DateMay 28, 2015
Last NPPES UpdateMay 11, 20265 updates tracked since enumeration
NPPES CertifiedMay 11, 2026
✔ NPI 1699154237 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in CA · A155640✔ Licensed in MI · 4301107568✔ Licensed in AZ · 80014
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
300 FIR ST FL 1, San Diego, CA 92101
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Stephanie Yen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6800101015
PECOS Enrollment IDI20180727002435, I20260515003553
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

5

Medicare enrollment records show Stephanie Yen reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Alvarado Emergency Medical Associates, Inc.
4.7 mi
Emergency Medicine
6655 ALVARADO RD
San Diego, CA 92120
  • Reassigned Medicare billing, California enrollment
  • 62 clinicians in this Medicare group
NPI 1285811992 (424) 241-1546
Sharp Rees-Stealy Medical Group, Inc
11 mi
Internal Medicine
5651 COPLEY DR STE A
San Diego, CA 92111
  • Reassigned Medicare billing, California enrollment
  • 1,233 clinicians in this Medicare group
NPI 1285616177 (858) 262-6666
Temecula Valley Emergency Physicians, Inc
53 mi
Emergency Medicine
31700 TEMECULA PKWY
Temecula, CA 92592
  • Reassigned Medicare billing, California enrollment
  • 77 clinicians in this Medicare group
NPI 1407281223 (424) 241-1546
Corona Regional Emergency Medical Associates Inc
86 mi
Emergency Medicine
800 S MAIN ST
Corona, CA 92882
  • Reassigned Medicare billing, California enrollment
  • 114 clinicians in this Medicare group
NPI 1134629298 (310) 321-0143
Sierra Estrellas Emergency Physicians LLC
140 mi
Emergency Medicine
2400 S AVENUE A
Yuma, AZ 85364
  • Reassigned Medicare billing, Arizona enrollment
  • 79 clinicians in this Medicare group
NPI 1578001319 (954) 939-5000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
130 services125 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
97 services93 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
57 services57 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
55 services54 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
26 services25 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92101 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.87 typical visit price
range $62.10 – $184.71
Typical copayment $23.71 (range $15.52 – $46.17)
Most-billed visit code 99203
Established Patient
$108.42 typical visit price
range $20.62 – $151.42
Typical copayment $27.10 (range $5.15 – $37.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AMMAR CHARESTAN M.D.
Family Medicine
300 FIR ST FL 1
SAN DIEGO, CA 92101
San Diego County (619) 446-1575

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Stephanie Yen's NPI number?

The NPI number for Stephanie Yen is 1699154237. It was assigned to this individual provider in the NPPES registry on May 28, 2015.

Where is Stephanie Yen located?

Stephanie Yen practices at 300 Fir St Fl 1, San Diego, CA 92101. The listed phone number is (619) 446-1575.

What is Stephanie Yen's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Stephanie Yen enrolled in Medicare?

Yes. Stephanie Yen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Stephanie Yen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie Yen reassigns Medicare benefits to 5 organizations: Alvarado Emergency Medical Associates, Inc. (San Diego, CA), Sharp Rees-Stealy Medical Group, Inc (San Diego, CA), Temecula Valley Emergency Physicians, Inc (Temecula, CA), Corona Regional Emergency Medical Associates Inc (Corona, CA) and Sierra Estrellas Emergency Physicians LLC (Yuma, AZ). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Stephanie Yen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Stephanie Yen accept?

Health plans from Oscar Health Plan, Inc. list Stephanie Yen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Stephanie Yen was last updated on May 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.