Gregory Holles, MD
NPI 1750320206 · Family Medicine Physician · Beaverton, OR
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Holles, MD is a Family Medicine Physician provider in Beaverton, OR (NPI 1750320206).
Provider details
- NPI number
- 1750320206
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD22095 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 59 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 147 | 41 |
| Lisinopril | 96 | 27 |
| Omeprazole | 88 | 24 |
| Amlodipine Besylate | 76 | 28 |
| Losartan Potassium | 75 | 20 |
| Metformin Hcl | 69 | 21 |
| Albuterol Sulfate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-06
- Last updated
- 2019-12-17
- Certified
- 2019-12-17
Frequently asked questions
- What is Gregory Holles's NPI number?
- Gregory Holles's National Provider Identifier (NPI) is 1750320206, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Holles's specialty?
- Gregory Holles is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Holles located?
- Gregory Holles's practice location on file with NPPES is 2935 Sw Cedar Hills Blvd, Beaverton, OR 97005-1342.
- What is Gregory Holles's phone number?
- The practice phone number listed in the NPPES registry for Gregory Holles is (503) 352-6000.
- Does Gregory Holles accept Medicare?
- Gregory Holles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Holles's NPI active?
- Yes — Gregory Holles's NPI (1750320206) is active in the NPPES registry as of the last update on 2019-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.