Dr. Gregory S. Holst, MD

  • Eureka, CA
  • Family medicine physician
NPI1881601615PAC ID0143325969
Medicare services, 2024
3,058
Medicare patients, 2024
534
Part D claims, 2024
8,648
Hospital affiliations
2
Industry payments
$60
Practice address
2280 Harrison Ave, Eureka, CA 95501
Practice phone
Call (714) 449-4900
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Providence Medical Foundation

Eureka, California

See all 8 affiliations

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Dr. Gregory S. Holst is a family medicine physician in Eureka, California

Dr. Holst practices at Providence Medical Foundation in Eureka, California.

Dr. Holst's NPI, 1881601615, was assigned on August 2, 2006. Dr. Holst graduated from University of Colorado Anschutz Medical Campus in 1995. Dr. Holst holds California license C52586.

NPI and contact details
Medicare PAC ID
0143325969
NPI enumeration date
August 2, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(714) 449-4900
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
57
Medical school graduation
1995

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

Dr. Gregory S. Holst practices at Providence Medical Foundation in Eureka, California

Dr. Holst's primary practice is Providence Medical Foundation, at 2280 Harrison Ave, Eureka, CA 95501 in Humboldt County. The practice phone is (714) 449-4900.

  • Providence Medical Foundation
    2280 Harrison Ave, Eureka, CA 95501 · Humboldt CountyPhone(714) 449-4900

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Gregory S. Holst is affiliated with 6 sites of care and 2 medical groups

Dr. Holst's primary practice is Providence Medical Foundation in Eureka, California. Dr. Holst is also affiliated with Providence St. Joseph Hospital Eureka. The medical group on file is St. Jude Heritage Medical Group. Dmand AI also links Dr. Holst to 1 more hospital, 2 group practices and clinics, 1 home health agency and 1 medical group, each named with a free account.

See all 8 affiliations for Dr. Holst

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Gregory S. Holst's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Holst practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Providence Medical FoundationAvailable with a free account
+5 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Gregory S. Holst is one of 15,680 family medicine physicians in California

Family medicine is Dr. Holst's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Holst is board certified in family medicine by the American Board of Family Medicine. Dmand AI has Dr. Holst's licenses on file in 2 states: California and Colorado.

Specialties and state licenses

  • Family medicine, CaliforniaPrimaryLicense C52586 · 2006 to 2026 · taxonomy 207Q00000X
  • Colorado license1990 to 2011

Clinical focus

Dmand AI lists acid reflux, acute mini-stroke (TIA), acute skin infection, adjustment disease, alzheimer's disease, aneurysm, anxiety and arthritis among the conditions Dr. Holst treats.

Family medicine physicians near Dr. Holst

Counts of family medicine physicians 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. Gregory S. Holst billed Medicare for 3,058 services in 2024

CMS data shows 3,058 Medicare services from Dr. Holst across 18 procedure codes in 2024, for 534 Medicare patients. Medicare paid $148,185 for them. Every service was in an office.

Medicare services, 20243,058
Medicare patients534
Paid by Medicare$148,185
Procedure codes18

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

  • 2023
  • 2024
Office and hospital visits
2023: 1,5242024: 1,6196%
Other services
2023: 1852024: 812339%
Surgery
2023: 3662024: 3436%
Lab and pathology
2023: 1042024: 241132%
Tests and treatments
2023: 1202024: 4364%

Dr. Holst compared with the California median for family medicine physicians, 2024

  • Dr. Holst
  • California median
Medicare services
3,058vs 24612.4 times
Medicare patients
534vs 1184.5 times
Part D claims
7,947vs 8339.5 times

Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.

Dr. Holst'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.

See all procedures by Dr. Holst

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

Dr. Gregory S. Holst treated 534 Medicare patients in 2024, average age 74

CMS counts 534 Medicare patients who saw Dr. Holst in 2024. The largest group is 65 to 74, with 290 patients. 75% of them have high cholesterol, and 66% have high blood pressure. 5% are also on Medicaid. Their average risk score is 0.83, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Holst's median patient age at 70, with 52% women.

Medicare patients, 2024534
Average age74
Average risk score0.83
Also on Medicaid5%

Dr. Holst's Medicare patients by age, 2024

Dr. Holst's Medicare patients by sex, 2024

  • Women25748%
  • Men27752%

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

  1. High cholesterol75%
  2. High blood pressure66%
  3. Arthritis37%
  4. Diabetes22%
  5. Anxiety18%
  6. Mood disorders17%
  7. Atrial fibrillation15%
  8. Chronic kidney disease15%

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

Dr. Holst's patients across all payers

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

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women52%
  • Men48%

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

Dr. Gregory S. Holst wrote 8,648 Medicare Part D claims in 2024

In 2024, Dr. Holst wrote 8,648 Medicare Part D claims for 564 patients. 91% of them were for generic drugs. CMS names the drug for 7,947 of them, across 121 drugs with 11 or more claims each, at $605,523 in total drug cost. In 2023, CMS named 7,053 claims across 109 drugs.

Part D claims, 20248,648
Drugs named by CMS121
Total drug cost$605,523
Part D patients564

Dr. Holst's Part D claims by kind of drug, 2024

  • Generic7,858 claims91%
  • Brand-name771 claims9%
  • Other19 claims0%

Dr. Holst's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Holst's Part D claims, 2024

  • Opioids3%289 of 8,648 claims
  • Antibiotics1%81 of 8,648 claims
  • Antipsychotics, patients 65 and over1%97 of 8,648 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 7,0532024: 7,94713%

Drugs named by CMS: 121 in 2024, 109 in 2023.

See all prescribing by Dr. Holst

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Gregory S. Holst ranks in the 75th percentile for removal of skin lesions in Medicare

Dr. Holst accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Holst as offering telehealth. CMS counts 102 procedures of removal of skin lesions by Dr. Holst, more than 75% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Where Dr. Holst ranks in Medicare procedure volume

Removal of skin lesions
75th percentile102 procedures
Removal or shaving of skin growth
74th percentile27 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)

Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Gregory S. Holst received $60 in industry payments in 2019

CMS Open Payments shows 1 general payment to Dr. Holst from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $60.

Companies that paid Dr. Holst the most, 2019 to 2019

Share is of all general payments to this clinician.

See all payments to Dr. Holst

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Gregory S. Holst has 1 award and honors on record

Dmand AI lists 1 award for Dr. Holst, most recently CMS Stage 1 2012 in 2012.

Awards and honors for Dr. Holst

  1. 2012
    • CMS Stage 1 2012

Source: Dmand AI Professional Profile Data

Dr. Gregory S. Holst graduated from University of Colorado Anschutz Medical Campus

Dr. Holst graduated from University of Colorado Anschutz Medical Campus in 1995.

  1. Medical schoolUniversity of Colorado Anschutz Medical Campus
  2. Board certified in family medicineAmerican Board of Family Medicine

Source: Dmand AI Professional Profile Data

Dr. Gregory S. Holst accepts plans from 13 insurance carriers

Dr. Holst is in network with 13 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • United Healthcare
  • Elevance
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross Blue Shield of Michigan
  • Regence Health Plans
  • Alliant Health Plans
  • +5 more carriersWith a free account

Plan types Dr. Holst accepts, by number of carriers

  1. PPO9
  2. HMO6
  3. Medicare6
  4. EPO4
  5. POS2

Source: Dmand AI Insurance Network Data

Sources for Dr. Gregory S. Holst'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
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. Gregory S. Holst

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. Gregory S. Holst's NPI number?

Dr. Gregory S. Holst's NPI number is 1881601615. It was assigned on August 2, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Gregory S. Holst?

Dr. Gregory S. Holst is a family medicine physician in Eureka, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).

Where does Dr. Gregory S. Holst practice?

Dr. Holst practices at 2280 Harrison Ave, Eureka, CA 95501. Dr. Holst's primary practice is Providence Medical Foundation in Eureka, California. Dmand AI also links Dr. Holst to 1 hospital, 2 group practices and clinics, 1 home health agency and 1 medical group.

What is Dr. Gregory S. Holst's office phone number?

The practice phone on file for Dr. Holst is (714) 449-4900.

What is Dr. Gregory S. Holst's medical license number?

Dr. Holst holds California license C52586, one of the licenses on file in 2 states.

Which states has Dr. Gregory S. Holst been licensed in?

Dmand AI has state licenses on file for Dr. Holst in California (2006 to 2026) and Colorado (1990 to 2011).

Which hospitals is Dr. Gregory S. Holst affiliated with?

Dr. Holst is affiliated with Providence St. Joseph Hospital Eureka. Dmand AI links Dr. Holst to 1 more hospital.

What medical group is Dr. Gregory S. Holst part of?

Dr. Holst is linked to St. Jude Heritage Medical Group. Dmand AI links Dr. Holst to 1 more medical group.

Does Dr. Gregory S. Holst accept Medicare?

Yes. CMS data shows Dr. Holst billed Medicare for 3,058 services in 2024, and Dr. Holst accepts Medicare assignment.

Does Dr. Gregory S. Holst offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Holst as offering telehealth services.

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Gregory S. Holst see?

CMS counts 534 Medicare patients who saw Dr. Holst in 2024, with an average age of 74.

Is Dr. Gregory S. Holst board certified?

Yes. Dr. Holst is board certified in family medicine by the American Board of Family Medicine.

What services does Dr. Gregory S. Holst bill to Medicare?

In 2024, Dr. Holst's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and surgery: skin and soft tissue (17003).

Where did Dr. Gregory S. Holst go to medical school?

Dr. Holst graduated from University of Colorado Anschutz Medical Campus in 1995.

What drugs does Dr. Gregory S. Holst prescribe most?

In 2024 Medicare Part D data, Dr. Holst's most prescribed drugs by claims were Losartan Potassium, Rosuvastatin Calcium and Atorvastatin Calcium.

Has Dr. Gregory S. Holst received payments from drug or device companies?

CMS Open Payments shows $60 in general payments to Dr. Holst from 1 company from 2019 to 2019. The largest total came from Teva Pharmaceuticals USA, Inc.

How long has Dr. Gregory S. Holst been practicing?

Dr. Holst graduated from medical school in 1995, 31 years ago.

What insurance does Dr. Gregory S. Holst accept?

Dr. Holst is in network with 13 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

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