ALEXA NICOLE CARLSTED LUCAS MD
NPI 1295485316
Emergency Medicine in San Francisco, CA

Active since March 24, 2022PECOS Enrolled
521 PARNASSUS AVE FL 7, SAN FRANCISCO, CA 94143(415) 353-1529 Get Directions Write a Review

NPPES record last updated: April 22, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Alexa Nicole Carlsted Lucas Md NPPES

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

ALEXA NICOLE CARLSTED LUCAS MD (NPI 1295485316) is an individual emergency medicine provider in San Francisco, California, licensed in California (A189841) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of Un Of California, Irvine, College Of Medicine (2022).

NPPES Registry Identity

NPI1295485316
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameALEXA NICOLE CARLSTED LUCASCredential: MD
Location Address521 PARNASSUS AVE FL 7San Francisco, CA 94143-2206
Mailing Address521 Parnassus Ave Fl 7San Francisco, CA 94143-2206 · (415) 353-1529
Sole ProprietorNo
Medical School CMSUn Of California, Irvine, College Of MedicineGraduated 2022
Enumeration DateMarch 24, 2022
Last NPPES UpdateApril 22, 2026
NPPES CertifiedApril 22, 2026
✔ NPI 1295485316 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · A189841
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.
521 PARNASSUS AVE FL 7, San Francisco, CA 94143

Other Names 1

Former Name (1)Alexa Nicole Lucas Md

Secondary Practice Location 1

Location 1505 Parnassus AveSan Francisco, CA 94143-2204 · Phone (415) 353-1238 · Fax (415) 353-1799

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alexa Nicole Carlsted Lucas Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5991205205
PECOS Enrollment IDI20260511002075
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

2

Medicare enrollment records show Alexa Lucas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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 20

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

Student in an Organized Health Care Education/Training Program
521 PARNASSUS AVE FL 7
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
521 PARNASSUS AVE FL 7
SAN FRANCISCO, CA 94143
Emergency Medicine
521 PARNASSUS AVE FL 7
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
521 PARNASSUS AVE FL 7
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
521 PARNASSUS AVE FL 7
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
521 PARNASSUS AVE FL 7
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
521 PARNASSUS AVE FL 7
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
521 PARNASSUS AVE FL 7
SAN FRANCISCO, CA 94143

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 Alexa Lucas's NPI number?

The NPI number for Alexa Lucas is 1295485316. It was assigned to this individual provider in the NPPES registry on March 24, 2022. The provider is also known as Alexa Nicole Lucas MD.

Where is Alexa Lucas located?

Alexa Lucas practices at 521 Parnassus Ave Fl 7, San Francisco, CA 94143. The listed phone number is (415) 353-1529.

What is Alexa Lucas's specialty?

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

Is Alexa Lucas enrolled in Medicare?

Yes. Alexa Lucas is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Alexa Lucas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexa Lucas reassigns Medicare benefits to 2 organizations: University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). 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 Alexa Lucas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Alexa Lucas was last updated on April 22, 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.