Gregory Parker, M.D.
NPI 1578781761 · Family Medicine Physician · Hood River, OR
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Parker, M.D. is a Family Medicine Physician provider in Hood River, OR (NPI 1578781761).
Provider details
- NPI number
- 1578781761
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- BF7751856 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
16 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) |
|---|---|---|
| Hemoglobin A1c Level83036 | 16 | $10 |
Typical Medicare-allowed amounts for these services range $10–$10 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 89 | 27 |
| Lisinopril | 66 | 19 |
| Trazodone Hcl | 43 | — |
| Gabapentin | 41 | 11 |
| Oxycodone Hcl | 40 | — |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 34 | — |
| Tamsulosin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-23
- Last updated
- 2011-11-19
Frequently asked questions
- What is Gregory Parker's NPI number?
- Gregory Parker's National Provider Identifier (NPI) is 1578781761, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Parker's specialty?
- Gregory Parker is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Parker located?
- Gregory Parker's practice location on file with NPPES is 849 Pacific Avenue, Hood River, OR 97031-1956.
- What is Gregory Parker's phone number?
- The practice phone number listed in the NPPES registry for Gregory Parker is (541) 386-6380.
- Does Gregory Parker accept Medicare?
- Gregory Parker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Parker's NPI active?
- Yes — Gregory Parker's NPI (1578781761) is active in the NPPES registry as of the last update on 2011-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.