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Cardiovascular Disease (Cardiology)

Ramford K. Ng, MD

Works at hospitals in Sonora, CA · Merced, CA · Stanford, CA … · California

Summary

Dr. Ramford K. Ng, MD is a cardiologist at 300 Pasteur Dr, Stanford, CA 94305. Phone: (650) 723-4000. Accepts Medicare assignment. In 2024, Ramford K. Ng had 2,638 Original Medicare patients and 10,187 services. NPI 1134257702. 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.

  • Specialty: Cardiologist (Medicare lists Cardiovascular Disease (Cardiology))
  • Address: 300 Pasteur Dr, Stanford, CA 94305 · Directions (1 more location)
  • Phone: (650) 723‑4000
  • Medicare: Accepts Medicare assignment
  • Hospitals: Adventist Health Sonora, Mercy Medical Center, Stanford Health Care and 1 more
  • Group practice: Stanford Health Care (+1 more)
  • Medical school: University Of California, San Diego School Of Medicine · graduated 2003 (23 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Ramford K. Ng, 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 Ramford K. Ng accept Medicare assignment?
Yes. Medicare's clinician data says Ramford K. Ng 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 Ramford K. Ng see?
In 2024, CMS data shows 2,638 Original Medicare patients and 10,187 services for Ramford K. Ng. This counts Original Medicare only and measures volume, not quality.
What is Ramford K. Ng's NPI number?
1134257702. 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 Ramford K. Ng, 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 patients2,638
Services billed to Medicare10,187
Different services or procedures86
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)1,480 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)1,138 services
  3. 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's (G2211)1,119 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,091 services
  5. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)1,022 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%
  • Ischemic heart disease48%
  • Chronic kidney disease45%
  • Arthritis44%
  • Atrial fibrillation37%

Hospitals where Ramford K. Ng works

Medicare's Facility Affiliation Data lists Ramford K. Ng 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.

  • Adventist Health SonoraSonora, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050335
  • Mercy Medical CenterMerced, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050444
  • Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441
  • Stanford Health Care Tri-ValleyPleasanton, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050283

Practice locations

Addresses where Ramford K. Ng is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Ramford K. Ng as a member of these groups (CMS data updated October 2, 2026).

  • Stanford Health Care3,122 clinicians in the group
  • University Healthcare Alliance327 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in California →

Other cardiologists in Stanford

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

All cardiologists in Stanford →

Other clinicians in Stanford Health Care

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

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Diego School Of Medicine
Graduation year2003 (23 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1134257702
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