John Finley, DO
NPI 1922042076 · Rheumatology Physician · Chino, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Finley, DO is a Rheumatology Physician provider in Chino, CA (NPI 1922042076).
Provider details
- NPI number
- 1922042076
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A5583 (CA)
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 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
111 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) |
|---|---|---|
| Annual Depression Screening, 5 to 15 MinutesG0444 | 51 | $19 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 37 | $9 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 23 | $19 |
Typical Medicare-allowed amounts for these services range $9–$19 (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 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hcl | 137 | 46 |
| Atorvastatin Calcium | 127 | 47 |
| Amlodipine Besylate | 98 | 33 |
| Losartan Potassium | 83 | 30 |
| Lisinopril | 79 | 32 |
| Levothyroxine Sodium | 60 | 23 |
| Simvastatin | 60 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$926 across 5 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
- 2006-06-16
- Last updated
- 2026-02-11
- Certified
- 2026-02-11
Frequently asked questions
- What is John Finley's NPI number?
- John Finley's National Provider Identifier (NPI) is 1922042076, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Finley's specialty?
- John Finley is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is John Finley located?
- John Finley's practice location on file with NPPES is 13193 Central Ave Ste 100, Chino, CA 91710-4179.
- What is John Finley's phone number?
- The practice phone number listed in the NPPES registry for John Finley is (909) 464-9675.
- Does John Finley accept Medicare?
- John Finley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Finley's NPI active?
- Yes — John Finley's NPI (1922042076) is active in the NPPES registry as of the last update on 2026-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.