Gregory Chronowski, M.D.
NPI 1598789570 · Radiation Oncology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Chronowski, M.D. is a Radiation Oncology Physician provider in Houston, TX (NPI 1598789570).
Provider details
- NPI number
- 1598789570
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- M2924 (TX)
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
1,660 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) |
|---|---|---|
| Stereoscopic X-Ray Guidance for Localization of Target Volume for the Delivery of Radiation TherapyG6002 | 984 | $20 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 185 | $191 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 128 | $44 |
| Calculation of Radiation Therapy Dose77300 | 108 | $32 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 43 | $68 |
| Design and Construction of Complex Radiation Treatment Device77334 | 41 | $59 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-26
- Last updated
- 2020-05-19
- Certified
- 2020-05-19
Frequently asked questions
- What is Gregory Chronowski's NPI number?
- Gregory Chronowski's National Provider Identifier (NPI) is 1598789570, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Chronowski's specialty?
- Gregory Chronowski is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Chronowski located?
- Gregory Chronowski's practice location on file with NPPES is 1515 Holcombe Blvd, Houston, TX 77030-4000.
- What is Gregory Chronowski's phone number?
- The practice phone number listed in the NPPES registry for Gregory Chronowski is (713) 792-6161.
- Does Gregory Chronowski accept Medicare?
- Gregory Chronowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Chronowski's NPI active?
- Yes — Gregory Chronowski's NPI (1598789570) is active in the NPPES registry as of the last update on 2020-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.