John Ader, DO-RHEUMATOLOGY
NPI 1992789564 · Rheumatology Physician · Post Falls, ID
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Ader, DO-RHEUMATOLOGY is a Rheumatology Physician provider in Post Falls, ID (NPI 1992789564).
Provider details
- NPI number
- 1992789564
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO-RHEUMATOLOGY
- Sex
- Male
- Sole proprietor
- No
- License
- 3103 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
320 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 173 | $117 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 84 | $15 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 37 | $84 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 13 | $9 |
| Online Digital Evaluation and Management Service for an Established Patient for Up to 7 Days, Total Time 21 Or More Minutes99423 | 13 | $43 |
Typical Medicare-allowed amounts for these services range $9–$117 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 298 | 69 |
| Leflunomide | 248 | 62 |
| Methotrexate Sodiumbrand: Methotrexate | 169 | 43 |
| Alendronate Sodium | 112 | 33 |
| Prednisone | 87 | 34 |
| Allopurinol | 69 | 18 |
| Adalimumabbrand: Humira(cf) Pen | 54 | — |
Practice location
Mailing address
Additional practice locations (3)
- 10310 the Grove BlvdBaton Rouge, LA 70836-6455Phone: (225) 761-5200
- 9500 Euclid AveCleveland, OH 44195-0001Phone: (216) 444-2250
- 1836 South AveLa Crosse, WI 54601-5429Phone: (608) 782-7300
Registry dates
- Enumerated
- 2005-12-06
- Last updated
- 2026-01-09
- Certified
- 2026-01-09
Frequently asked questions
- What is John Ader's NPI number?
- John Ader's National Provider Identifier (NPI) is 1992789564, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ader's specialty?
- John Ader is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is John Ader located?
- John Ader's practice location on file with NPPES is 784 S Clearwater Loop Ste B, Post Falls, ID 83854-9599.
- What is John Ader's phone number?
- The practice phone number listed in the NPPES registry for John Ader is (833) 767-4386.
- Does John Ader accept Medicare?
- John Ader is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Ader's NPI active?
- Yes — John Ader's NPI (1992789564) is active in the NPPES registry as of the last update on 2026-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.