John Thropay, M.D.
NPI 1427128073 · Radiation Oncology Physician · Montebello, CA
John Thropay, M.D. is a Radiation Oncology Physician provider in Montebello, CA (NPI 1427128073).
Provider details
- NPI number
- 1427128073
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G32178 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 38 | 16 |
| Lidocaine Hclbrand: Lidocaine Hcl Viscous | 15 | — |
| Ciprofloxacin Hcl | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$27 across 1 record (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
Additional practice locations (2)
- 80 S Palm AveAlhambra, CA 91801-3101Phone: (626) 571-6729
- 1041 E Yorba Linda Blvd Ste 100Placentia, CA 92870-3762Phone: (647) 444-1164Fax: (657) 208-9759
Registry dates
- Enumerated
- 2006-11-09
- Last updated
- 2024-01-29
- Certified
- 2024-01-29
Frequently asked questions
- What is John Thropay's NPI number?
- John Thropay's National Provider Identifier (NPI) is 1427128073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Thropay's specialty?
- John Thropay is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Thropay located?
- John Thropay's practice location on file with NPPES is 120 W Beverly Blvd, Montebello, CA 90640-4305.
- What is John Thropay's phone number?
- The practice phone number listed in the NPPES registry for John Thropay is (323) 724-8780.
- Is John Thropay's NPI active?
- Yes — John Thropay's NPI (1427128073) is active in the NPPES registry as of the last update on 2024-01-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.