Gregory Hallas, M.D.
NPI 1508813684 · Internal Medicine Physician · Vancouver, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Hallas, M.D. is a Internal Medicine Physician provider in Vancouver, WA (NPI 1508813684).
Provider details
- NPI number
- 1508813684
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD00026642 (WA)
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
20 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
986 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 199 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 144 | $127 |
| 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 | 99 | $16 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 82 | $10 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 82 | $129 |
| Blood Test, Lipids (cholesterol and Triglycerides) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 118 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 377 | 99 |
| Amlodipine Besylate | 358 | 100 |
| Levothyroxine Sodium | 311 | 74 |
| Rosuvastatin Calcium | 306 | 91 |
| Lisinopril | 304 | 81 |
| Losartan Potassium | 298 | 89 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-27
- Last updated
- 2015-07-21
Frequently asked questions
- What is Gregory Hallas's NPI number?
- Gregory Hallas's National Provider Identifier (NPI) is 1508813684, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Hallas's specialty?
- Gregory Hallas is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Hallas located?
- Gregory Hallas's practice location on file with NPPES is 700 Ne 87th Ave, Vancouver, WA 98664-1913.
- What is Gregory Hallas's phone number?
- The practice phone number listed in the NPPES registry for Gregory Hallas is (360) 882-2778.
- Does Gregory Hallas accept Medicare?
- Gregory Hallas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Hallas's NPI active?
- Yes — Gregory Hallas's NPI (1508813684) is active in the NPPES registry as of the last update on 2015-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.