Stephen Knohl, MD
NPI 1144258567 · Nephrology Physician · Syracuse, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Knohl, MD is a Nephrology Physician provider in Syracuse, NY (NPI 1144258567).
Provider details
- NPI number
- 1144258567
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 213082 (NY)
Specialties & taxonomies
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
98 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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 45 | $47 |
| Hemodialysis Procedure With Physician Evaluation90935 | 27 | $68 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 26 | $75 |
Typical Medicare-allowed amounts for these services range $47–$75 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Potassium Citratebrand: Potassium Citrate Er | 123 | 28 |
| Chlorthalidone | 43 | — |
| Indapamide | 40 | 12 |
| Potassium Chloride | 33 | — |
| Allopurinol | 27 | — |
| Potassium Chloridebrand: Klor-Con M20 | 19 | — |
| Amiloride/Hydrochlorothiazidebrand: Amiloride-Hydrochlorothiazide | 15 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-28
- Last updated
- 2010-06-16
Frequently asked questions
- What is Stephen Knohl's NPI number?
- Stephen Knohl's National Provider Identifier (NPI) is 1144258567, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Knohl's specialty?
- Stephen Knohl is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Knohl located?
- Stephen Knohl's practice location on file with NPPES is 90 Presidential Plz, Syracuse, NY 13202-2240.
- What is Stephen Knohl's phone number?
- The practice phone number listed in the NPPES registry for Stephen Knohl is (315) 464-3834.
- Does Stephen Knohl accept Medicare?
- Stephen Knohl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Knohl's NPI active?
- Yes — Stephen Knohl's NPI (1144258567) is active in the NPPES registry as of the last update on 2010-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.