Gregory Holst, MD
NPI 1881601615 · Family Medicine Physician · Eureka, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Holst, MD is a Family Medicine Physician provider in Eureka, CA (NPI 1881601615).
Provider details
- NPI number
- 1881601615
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C52586 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,015 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,213 | $130 |
| 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'SG2211 | 694 | $16 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 234 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 206 | $92 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 160 | $24 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 122 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 626 | 169 |
| Rosuvastatin Calcium | 623 | 173 |
| Atorvastatin Calcium | 421 | 112 |
| Lisinopril | 304 | 80 |
| Levothyroxine Sodium | 253 | 70 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 228 | 36 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-02
- Last updated
- 2021-02-15
- Certified
- 2021-02-15
Frequently asked questions
- What is Gregory Holst's NPI number?
- Gregory Holst's National Provider Identifier (NPI) is 1881601615, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Holst's specialty?
- Gregory Holst is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Holst located?
- Gregory Holst's practice location on file with NPPES is 2675 Harris Street, Eureka, CA 95503.
- What is Gregory Holst's phone number?
- The practice phone number listed in the NPPES registry for Gregory Holst is (707) 443-8335.
- Does Gregory Holst accept Medicare?
- Gregory Holst is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Holst's NPI active?
- Yes — Gregory Holst's NPI (1881601615) is active in the NPPES registry as of the last update on 2021-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.