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Neurology

Giovanna Manzano, MD

Works at hospitals in Boston, MA · Nantucket, MA · Orange, CA · Massachusetts, California

Summary

Dr. Giovanna Manzano, MD is a neurologist at 101 The City Dr S, Orange, CA 92868. Phone: (714) 456-7004. Accepts Medicare assignment. In 2024, Giovanna Manzano had 213 Original Medicare patients and 563 services. NPI 1376073528. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Giovanna Manzano, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Giovanna Manzano accept Medicare assignment?
Yes. Medicare's clinician data says Giovanna Manzano accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Giovanna Manzano see?
In 2024, CMS data shows 213 Original Medicare patients and 563 services for Giovanna Manzano. This counts Original Medicare only and measures volume, not quality.
What is Giovanna Manzano's NPI number?
1376073528. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Giovanna Manzano, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients213
Services billed to Medicare563
Different services or procedures17
Participating Medicare providerYes
Average age of these patients69

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)259 services
  2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)152 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)45 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)27 services
  5. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)26 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis47%
  • Stroke or mini-stroke43%
  • Depression42%
  • Anxiety41%

Hospitals where Giovanna Manzano works

Medicare's Facility Affiliation Data lists Giovanna Manzano at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Giovanna Manzano is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Giovanna Manzano as a member of these groups (CMS data updated October 2, 2026).

  • Brigham and Womens Physicians Organization Inc2,994 clinicians in the group
  • The General Hospital Corporation1,267 clinicians in the group
  • Regents of the University of Claifornia Univ Neursciences74 clinicians in the group

Specialties

Find other Neurology doctors in California →

Other neurologists in Orange

Clinicians with the same Medicare primary specialty in Orange, CA — not a recommendation.

All neurologists in Orange →

Other clinicians in Brigham and Womens Physicians Organization Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2017 (9 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1376073528
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians