Hiram Gay, MD
NPI 1720045297 · Radiation Oncology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hiram Gay, MD is a Radiation Oncology Physician provider in Saint Louis, MO (NPI 1720045297).
Provider details
- NPI number
- 1720045297
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2009005440 (MO)
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
20 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
1,695 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) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 388 | $43 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 328 | $43 |
| Calculation of Radiation Therapy Dose77300 | 134 | $31 |
| Calculation of Radiation Therapy Dose77300 | 119 | $31 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 94 | $183 |
| Design and Construction of Complex Radiation Treatment Device77334 | 67 | $58 |
| Radiation Treatment Management, 5 Treatment Sessions |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 91 | 59 |
| Ciprofloxacin Hcl | 63 | 56 |
| Bicalutamide | 53 | 43 |
| Oxycodone Hcl | 28 | — |
| Relugolixbrand: Orgovyx | 18 | — |
| Lidocaine Hclbrand: Lidocaine Hcl Viscous | 17 | — |
| Fentanyl | 13 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,056 across 10 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
- 2006-04-28
- Last updated
- 2025-04-17
Frequently asked questions
- What is Hiram Gay's NPI number?
- Hiram Gay's National Provider Identifier (NPI) is 1720045297, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hiram Gay's specialty?
- Hiram Gay is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Hiram Gay located?
- Hiram Gay's practice location on file with NPPES is 4921 Parkview Pl, Saint Louis, MO 63110-1032.
- What is Hiram Gay's phone number?
- The practice phone number listed in the NPPES registry for Hiram Gay is (314) 747-7236.
- Does Hiram Gay accept Medicare?
- Hiram Gay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hiram Gay's NPI active?
- Yes — Hiram Gay's NPI (1720045297) is active in the NPPES registry as of the last update on 2025-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.