Dr. Gregory S. Holst, MD
- 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
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Providence Medical Foundation
Eureka, California
Find Dr. Holst's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
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
- 1881601615NPI Registry (opens in a new tab)
- 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
- Get number
- 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 Foundation2280 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.
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.
| Site | EHR vendor and product |
|---|---|
| Providence Medical Foundation | Available with a free account |
| +5 more sites and 1 medical group | Available 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, CaliforniaPrimary
- Colorado license
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.
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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Holst and other family medicine physicians in California.
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.
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
- High cholesterol75%
- High blood pressure66%
- Arthritis37%
- Diabetes22%
- Anxiety18%
- Mood disorders17%
- Atrial fibrillation15%
- 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.
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.
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.
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
- 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.
- Medical school
- Board certified in 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
- PPO9
- HMO6
- Medicare6
- EPO4
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregory S. Holst's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand 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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