Dr. Kelly L. Ernst, MD

  • Stanford, CA
  • Pathologist
NPI1043674195PAC ID2860889425
Medicare services, 2024
2,712
Medicare patients, 2024
674
MIPS score, 2024
89
Hospital affiliations
3
Medical groups
2
Practice address
300 Pasteur Drive, Stanford, CA 94305
Practice phone
Call (650) 723-4000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Stanford Hospital at 300 Pasteur Drive

Hospital · Stanford, California

See all 5 affiliations

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Dr. Kelly L. Ernst is a pathologist in Stanford, California

Dr. Ernst practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.

Dr. Ernst's NPI, 1043674195, was assigned on April 5, 2016. Dr. Ernst graduated from David Geffen School of Medicine at UCLA in 2016. Dr. Ernst holds California license A151114.

NPI and contact details
Medicare PAC ID
2860889425
NPI enumeration date
April 5, 2016
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(650) 723-4000
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
36
Medical school graduation
2016

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Kelly L. Ernst practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California

Dr. Ernst's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.

Source: Dmand AI Affiliation Data

Dr. Kelly L. Ernst is affiliated with 3 sites of care and 2 medical groups

Dr. Ernst's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dr. Ernst is also affiliated with Stanford Health Care Tri-Valley. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Ernst to 1 more hospital and 1 medical group, each named with a free account. Dr. Ernst's employer is on file too: a hospital.

See all 5 affiliations for Dr. Ernst

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Kelly L. Ernst's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ernst practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Stanford Hospital at 300 Pasteur DriveAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Kelly L. Ernst is one of 1,354 pathologists in California

Anatomic pathology and clinical pathology is Dr. Ernst's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Ernst is board certified in cytopathology by the American Board of Pathology. Dr. Ernst is licensed in California.

Specialties and state licenses

  • Anatomic pathology and clinical pathology, CaliforniaPrimaryLicense A151114 · 2017 to 2027 · taxonomy 207ZP0102X

Pathologists near Dr. Ernst

Counts of pathologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Kelly L. Ernst billed Medicare for 2,712 services in 2024

CMS data shows 2,712 Medicare services from Dr. Ernst across 17 procedure codes in 2024, for 674 Medicare patients. Medicare paid $104,025 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20242,712
Medicare patients674
Paid by Medicare$104,025
Procedure codes17

Dr. Ernst's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Lab and pathology
2023: 2,3922024: 2,66611%
Surgery
2023: 272024: 3426%
Other services
2023: 02024: 12

Dr. Ernst compared with the California median for pathologists, 2024

  • Dr. Ernst
  • California median
Medicare services
2,712vs 1,1532.4 times
Medicare patients
674vs 44751% above

Medians across 1,094 pathologists in California with Dmand AI profiles that report each measure.

Dr. Ernst's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Kelly L. Ernst treated 674 Medicare patients in 2024, average age 74

CMS counts 674 Medicare patients who saw Dr. Ernst in 2024. The largest group is 65 to 74, with 321 patients. 75% of them have high cholesterol, and 68% have high blood pressure. 23% are also on Medicaid. Their average risk score is 1.58, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Ernst's median patient age at 53, with 66% women.

Medicare patients, 2024674
Average age74
Average risk score1.58
Also on Medicaid23%

Dr. Ernst's Medicare patients by age, 2024

Dr. Ernst's Medicare patients by sex, 2024

  • Women43264%
  • Men24236%

Chronic conditions among Dr. Ernst's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure68%
  3. Cancer51%
  4. Arthritis37%
  5. Diabetes28%
  6. Ischemic heart disease25%
  7. Osteoporosis25%
  8. Anxiety24%

Share of Medicare patients with each condition. A patient can have several.

Dr. Ernst's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 53

Patient panel by sex, all payers

  • Women66%
  • Men32%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Kelly L. Ernst scored 89 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Ernst for performance year 2024, reported as part of a group. Dr. Ernst accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Ernst's MIPS scores, performance year 2024

  • 89of 100Final score
  • 87.1of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 70of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Kelly L. Ernst graduated from David Geffen School of Medicine at UCLA

Dr. Ernst graduated from David Geffen School of Medicine at UCLA in 2016.

  1. Medical schoolDavid Geffen School of Medicine at UCLA
  2. Board certified in cytopathologyAmerican Board of Pathology
  3. Board certified in pathology - anatomic/pathology - clinicalAmerican Board of Pathology

Source: Dmand AI Professional Profile Data

Dr. Kelly L. Ernst accepts plans from 2 insurance carriers

Dr. Ernst is in network with 2 carriers, including CMS Medicare and NV State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.

  • CMS Medicare
  • NV State Medicaid

Plan types Dr. Ernst accepts, by number of carriers

  1. Medicaid1
  2. Medicare1

Source: Dmand AI Insurance Network Data

Sources for Dr. Kelly L. Ernst's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Kelly L. Ernst

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Kelly L. Ernst's NPI number?

Dr. Kelly L. Ernst's NPI number is 1043674195. It was assigned on April 5, 2016, and it is active in the NPI Registry.

What kind of doctor is Dr. Kelly L. Ernst?

Dr. Kelly L. Ernst is a pathologist in Stanford, California. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).

Where does Dr. Kelly L. Ernst practice?

Dr. Ernst practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Ernst's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Ernst to 1 hospital and 1 medical group.

What is Dr. Kelly L. Ernst's office phone number?

The practice phone on file for Dr. Ernst is (650) 723-4000.

What is Dr. Kelly L. Ernst's medical license number?

Dr. Ernst holds California license A151114.

Which hospitals is Dr. Kelly L. Ernst affiliated with?

Dr. Ernst practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dr. Ernst is also affiliated with Stanford Health Care Tri-Valley. Dmand AI links Dr. Ernst to 1 more hospital.

What medical group is Dr. Kelly L. Ernst part of?

Dr. Ernst is linked to Stanford Health Care. Dmand AI links Dr. Ernst to 1 more medical group.

Does Dr. Kelly L. Ernst accept Medicare?

Yes. CMS data shows Dr. Ernst billed Medicare for 2,712 services in 2024, and Dr. Ernst accepts Medicare assignment.

What is Dr. Kelly L. Ernst's MIPS score?

Dr. Ernst's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.

How many Medicare patients does Dr. Kelly L. Ernst see?

CMS counts 674 Medicare patients who saw Dr. Ernst in 2024, with an average age of 74.

Show 5 more questionsShow fewer questions

Is Dr. Kelly L. Ernst board certified?

Yes. Dr. Ernst is board certified in cytopathology by the American Board of Pathology.

What services does Dr. Kelly L. Ernst bill to Medicare?

In 2024, Dr. Ernst's most billed Medicare services were lab and pathology test (88341), lab and pathology test (88305) and lab and pathology test (88360).

Where did Dr. Kelly L. Ernst go to medical school?

Dr. Ernst graduated from David Geffen School of Medicine at UCLA in 2016.

How long has Dr. Kelly L. Ernst been practicing?

Dr. Ernst graduated from medical school in 2016, 10 years ago.

What insurance does Dr. Kelly L. Ernst accept?

Dr. Ernst is in network with 2 carriers, including CMS Medicare and NV State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.

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