Stanley Michalski, M.D.
NPI 1386649721 · Rheumatology Physician · Williamsville, NY
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stanley Michalski, M.D. is a Rheumatology Physician provider in Williamsville, NY (NPI 1386649721).
Provider details
- NPI number
- 1386649721
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 108355 (NY)
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
21 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
212 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 159 | $85 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 36 | $122 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 17 | $69 |
Typical Medicare-allowed amounts for these services range $69–$122 (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 · 102 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 486 | 64 |
| Prednisone | 402 | 72 |
| Methotrexate Sodiumbrand: Methotrexate | 218 | 52 |
| Lisinopril | 186 | 43 |
| Hydroxychloroquine Sulfate | 178 | 40 |
| Levothyroxine Sodium | 122 | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,527 across 76 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
- 2005-06-14
- Last updated
- 2019-08-19
Frequently asked questions
- What is Stanley Michalski's NPI number?
- Stanley Michalski's National Provider Identifier (NPI) is 1386649721, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stanley Michalski's specialty?
- Stanley Michalski is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Stanley Michalski located?
- Stanley Michalski's practice location on file with NPPES is 400 International Dr., Williamsville, NY 14221.
- What is Stanley Michalski's phone number?
- The practice phone number listed in the NPPES registry for Stanley Michalski is (716) 631-3555.
- Does Stanley Michalski accept Medicare?
- Stanley Michalski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stanley Michalski's NPI active?
- Yes — Stanley Michalski's NPI (1386649721) is active in the NPPES registry as of the last update on 2019-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.