Steven Knoper, MD
NPI 1427157718 · Pulmonary Disease Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Knoper, MD is a Pulmonary Disease Physician provider in Tucson, AZ (NPI 1427157718).
Provider details
- NPI number
- 1427157718
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 16883 (AZ)
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
19 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
99 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 68 | $114 |
| Critical Care, First 30-74 Minutes99291 | 17 | $206 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 14 | $78 |
Typical Medicare-allowed amounts for these services range $78–$206 (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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 134 | 22 |
| Azithromycin | 131 | 25 |
| Tacrolimus | 78 | — |
| Valganciclovir Hcl | 62 | 16 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 62 | 15 |
| Isavuconazonium Sulfatebrand: Cresemba | 48 | — |
| Fluconazole | 41 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$59 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
- 2006-09-22
- Last updated
- 2008-01-11
Frequently asked questions
- What is Steven Knoper's NPI number?
- Steven Knoper's National Provider Identifier (NPI) is 1427157718, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Knoper's specialty?
- Steven Knoper is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Knoper located?
- Steven Knoper's practice location on file with NPPES is 1501 N Campbell Ave, Tucson, AZ 85724-0001.
- What is Steven Knoper's phone number?
- The practice phone number listed in the NPPES registry for Steven Knoper is (520) 694-8888.
- Does Steven Knoper accept Medicare?
- Steven Knoper is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Knoper's NPI active?
- Yes — Steven Knoper's NPI (1427157718) is active in the NPPES registry as of the last update on 2008-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.