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Ophthalmology

Martha E. Ryan, MD

Works at hospitals in Monterey, CA · Salinas, CA · California

Summary

Martha E. Ryan, MD (Ophthalmology) is listed by Medicare at 2 hospitals in Monterey, CA and Salinas, CA. NPI 1427443738. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Martha E. Ryan, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

OphthalmologyPrimary specialty
YesAccepts Medicare assignment
11Years since medical school (graduated 2015)
Emory University School Of MedicineMedical school
FemaleGender (as listed)
Vantage Eye Center a Medical CorpGroup practice

Quick answers

Which hospitals does Martha E. Ryan work at?
Medicare's official clinician data lists Martha E. Ryan at 2 hospitals: Community Hospital of the Monterey Peninsula and Salinas Valley Health Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Martha E. Ryan see patients?
Medicare's clinician data lists 3 practice locations, including Monterey, CA and Salinas, CA. Call before your visit to confirm the address.
What is Martha E. Ryan's specialty?
Medicare lists Ophthalmology as the primary specialty.
Does Martha E. Ryan accept Medicare assignment?
Yes. Medicare's clinician data says Martha E. Ryan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Martha E. Ryan?
(831) 647-3900, as listed in official Medicare / NPI Registry data.
What is Martha E. Ryan's NPI number?
1427443738. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Martha E. Ryan works

Medicare's Facility Affiliation Data lists Martha E. Ryan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Martha E. Ryan is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Martha E. Ryan as a member of this group (CMS data updated 2026-10-02).

  • Vantage Eye Center a Medical Corp19 clinicians in the group

Specialties

Find other Ophthalmology doctors in California →

Other ophthalmologists in Monterey

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

All ophthalmologists in Monterey →

Clinician information

CredentialMD
Medical schoolEmory University School Of Medicine
Graduation year2015
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1427443738
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians