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ALEJANDRA MARCELA MARQUEZ LOZA MD
NPI 1154881266
Psychiatry & Neurology - Neurology in Sacramento, CA

Active since March 23, 2019PECOS EnrolledAccepts Medicare Assignment
4860 Y ST STE 3700, SACRAMENTO, CA 95817(916) 734-6285 Get Directions Write a Review

NPPES record last updated: August 13, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 13, 2024, Mar 23, 2019 (2 updates tracked since 2019).

About Alejandra Marcela Marquez Loza Md NPPES

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

ALEJANDRA MARCELA MARQUEZ LOZA MD (NPI 1154881266) is an individual neurology provider in Sacramento, California, licensed in California (A-193620) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (2019).

NPPES Registry Identity

NPI1154881266
Entity TypeIndividualFemale
Primary Taxonomy2084N0400X
Provider Legal NameALEJANDRA MARCELA MARQUEZ LOZACredential: MD
Location Address4860 Y ST STE 3700Sacramento, CA 95817-2307
Mailing Address2723 64th StSacramento, CA 95817-2619
Phone(916) 734-6285
Sole ProprietorNo
Medical School CMSHarvard Medical SchoolGraduated 2019
Enumeration DateMarch 23, 2019
Last NPPES UpdateAugust 13, 20242 updates tracked since enumeration
NPPES CertifiedAugust 13, 2024
✔ NPI 1154881266 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in CA · A-193620
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
4860 Y ST STE 3700, Sacramento, CA 95817
Open in Google Maps ↗

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

Alejandra Marcela Marquez Loza 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 ID7416497631
PECOS Enrollment IDI20240913001833
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 Reassignment

Medicare enrollment records show Alejandra Marquez Loza reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Regents Of The Univ Of Ca
Same address
Maternal & Fetal Medicine
4860 Y ST
Sacramento, CA 95817
  • Reassigned Medicare billing, California enrollment
  • 2,570 clinicians in this Medicare group
NPI 1013906973 (916) 734-6930

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 3

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
105 services43 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
29 services29 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95817 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
$137.20 typical visit price
range $60.44 – $180.85
Typical copayment $34.30 (range $15.11 – $45.21)
Most-billed visit code 99204
Established Patient
$105.95 typical visit price
range $19.88 – $148.15
Typical copayment $26.48 (range $4.97 – $37.03)
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.

MR. THOMAS LE MD
Student in an Organized Health Care Education/Training Program
4860 Y ST STE 3700
SACRAMENTO, CA 95817
Sacramento County (916) 734-3588
DR. KELLY J CHAN MD
Student in an Organized Health Care Education/Training Program
4860 Y ST STE 3700
SACRAMENTO, CA 95817
Sacramento County (916) 734-3588
DR. DAI PHUONG NGUYEN MD, MBA
Psychiatry & Neurology (Neurology)
4860 Y ST STE 3700
SACRAMENTO, CA 95817
Sacramento County (916) 734-3588
JOSHUA DAVIS
Student in an Organized Health Care Education/Training Program
4860 Y ST STE 3700
SACRAMENTO, CA 95817
Sacramento County (916) 734-3588
ANDREW SANTOS
Student in an Organized Health Care Education/Training Program
4860 Y ST STE 3700
SACRAMENTO, CA 95817
Sacramento County (916) 734-3588
DR. SIMRIT KAUR SODHI M.D.
Psychiatry & Neurology (Neurology)
4860 Y ST STE 3700
SACRAMENTO, CA 95817
Sacramento County (916) 734-3514
MICHELLE CHAN PH.D.
Clinical Neuropsychologist
4860 Y ST STE 3700
SACRAMENTO, CA 95817
Sacramento County (916) 703-5019
GREGORY Y CHANG MD
Psychiatry & Neurology (Neurology)
4860 Y ST STE 3700, UC DAVIS MEDICAL CENTER
SACRAMENTO, CA 95817
Sacramento County (916) 734-6280

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 Alejandra Marquez Loza's NPI number?

The NPI number for Alejandra Marquez Loza is 1154881266. It was assigned to this individual provider in the NPPES registry on March 23, 2019.

Where is Alejandra Marquez Loza located?

Alejandra Marquez Loza practices at 4860 Y St Ste 3700, Sacramento, CA 95817. The listed phone number is (916) 734-6285.

What is Alejandra Marquez Loza's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Alejandra Marquez Loza enrolled in Medicare?

Yes. Alejandra Marquez Loza 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 organization bills Medicare for Alejandra Marquez Loza's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alejandra Marquez Loza reassigns Medicare benefits to Regents Of The Univ Of Ca (Sacramento, CA). The 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 Alejandra Marquez Loza'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 Alejandra Marquez Loza was last updated on August 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.