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Emergency Medicine

Marissa O. Hood, DO

Works at hospitals in Santa Barbara, CA · California

Summary

Dr. Marissa O. Hood, DO is an emergency medicine doctor at 2050 Viborg Rd, Solvang, CA 93463. Phone: (805) 688-6431. Accepts Medicare assignment. In 2024, Marissa O. Hood had 551 Original Medicare patients and 930 services. NPI 1447886304. 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 Marissa O. Hood, 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 Marissa O. Hood accept Medicare assignment?
Yes. Medicare's clinician data says Marissa O. Hood 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 Marissa O. Hood see?
In 2024, CMS data shows 551 Original Medicare patients and 930 services for Marissa O. Hood. This counts Original Medicare only and measures volume, not quality.
What is Marissa O. Hood's NPI number?
1447886304. 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 Marissa O. Hood, 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 patients551
Services billed to Medicare930
Different services or procedures35
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)289 services
  2. Emergency department visit with high level of medical decision making (99285)208 services
  3. Critical care, first 30-74 minutes (99291)187 services
  4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)86 services
  5. Emergency department visit with moderate level of medical decision making (99284)46 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%
  • Arthritis62%
  • Chronic kidney disease41%
  • Ischemic heart disease37%
  • Depression37%

Hospitals where Marissa O. Hood works

Medicare's Facility Affiliation Data lists Marissa O. Hood 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 Marissa O. Hood is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Marissa O. Hood as a member of this group (CMS data updated October 2, 2026).

  • South Coast Emergency Medical Group Inc37 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Solvang

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

All emergency medicine doctors in Solvang →

Other clinicians in South Coast Emergency Medical Group Inc

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

Clinician information

CredentialDO
Graduation year2019 (7 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1447886304
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