Gregory Gilmore, D.O.
NPI 1205271640 · Hematology & Oncology Physician · Corona, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Gilmore, D.O. is a Hematology & Oncology Physician provider in Corona, CA (NPI 1205271640).
Provider details
- NPI number
- 1205271640
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A13656 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,592 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| 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 | 577 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 572 | $150 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 296 | $102 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 63 | $188 |
| Advance Care Planning, First 30 Minutes99497 | 30 | $78 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetron Hcl | 115 | 51 |
| Dexamethasone | 102 | 46 |
| Prochlorperazine Maleate | 76 | 49 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 50 | 32 |
| Anastrozole | 38 | 14 |
| Enzalutamidebrand: Xtandi | 36 | — |
| Letrozole | 35 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$57 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-04-29
- Last updated
- 2022-06-08
- Certified
- 2022-06-08
Frequently asked questions
- What is Gregory Gilmore's NPI number?
- Gregory Gilmore's National Provider Identifier (NPI) is 1205271640, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Gilmore's specialty?
- Gregory Gilmore is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Gilmore located?
- Gregory Gilmore's practice location on file with NPPES is 320 W 6th St, Corona, CA 92882-3349.
- What is Gregory Gilmore's phone number?
- The practice phone number listed in the NPPES registry for Gregory Gilmore is (951) 898-2828.
- Does Gregory Gilmore accept Medicare?
- Gregory Gilmore is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Gilmore's NPI active?
- Yes — Gregory Gilmore's NPI (1205271640) is active in the NPPES registry as of the last update on 2022-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.