Alejandra Marquez Loza, MD
NPI 1154881266 · Neurology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alejandra Marquez Loza, MD is a Neurology Physician provider in Sacramento, CA (NPI 1154881266).
Provider details
- NPI number
- 1154881266
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 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
163 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 105 | $80 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 29 | $129 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 16 | $17 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 13 | $176 |
Typical Medicare-allowed amounts for these services range $17–$176 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-03-23
- Last updated
- 2024-08-13
- Certified
- 2024-08-13
Frequently asked questions
- What is Alejandra Marquez Loza's NPI number?
- Alejandra Marquez Loza's National Provider Identifier (NPI) is 1154881266, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alejandra Marquez Loza's specialty?
- Alejandra Marquez Loza is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Alejandra Marquez Loza located?
- Alejandra Marquez Loza's practice location on file with NPPES is 4860 Y St Ste 3700, Sacramento, CA 95817-2307.
- What is Alejandra Marquez Loza's phone number?
- The practice phone number listed in the NPPES registry for Alejandra Marquez Loza is (916) 734-6285.
- Does Alejandra Marquez Loza accept Medicare?
- Alejandra Marquez Loza is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alejandra Marquez Loza's NPI active?
- Yes — Alejandra Marquez Loza's NPI (1154881266) is active in the NPPES registry as of the last update on 2024-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.