Hiroshi Kato, M.D.
NPI 1851538656 · Rheumatology Physician · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hiroshi Kato, M.D. is a Rheumatology Physician provider in Ann Arbor, MI (NPI 1851538656).
Provider details
- NPI number
- 1851538656
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 003898 (NY)
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 tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
656 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) |
|---|---|---|
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 171 | $33 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 156 | $132 |
| 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 | 120 | $16 |
| 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 | 60 | $16 |
| Online Digital Evaluation and Management Service for an Established Patient for Up to 7 Days, Total Time 5-10 Minutes99421 | 51 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 375 | 109 |
| Hydroxychloroquine Sulfate | 358 | 91 |
| Methotrexate Sodiumbrand: Methotrexate | 231 | 64 |
| Alendronate Sodium | 91 | 22 |
| Methylprednisolone | 73 | 21 |
| Mycophenolate Mofetil | 64 | 19 |
| Colchicine | 62 | 28 |
Practice location
Mailing address
Additional practice locations (1)
- 90 Presidential PlzFirm CSyracuse, NY 13202-2240Phone: (315) 464-3836Fax: (315) 464-3837
Registry dates
- Enumerated
- 2009-01-15
- Last updated
- 2023-04-04
- Certified
- 2023-04-04
Frequently asked questions
- What is Hiroshi Kato's NPI number?
- Hiroshi Kato's National Provider Identifier (NPI) is 1851538656, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hiroshi Kato's specialty?
- Hiroshi Kato is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Hiroshi Kato located?
- Hiroshi Kato's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Hiroshi Kato's phone number?
- The practice phone number listed in the NPPES registry for Hiroshi Kato is (734) 936-4000.
- Does Hiroshi Kato accept Medicare?
- Hiroshi Kato is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hiroshi Kato's NPI active?
- Yes — Hiroshi Kato's NPI (1851538656) is active in the NPPES registry as of the last update on 2023-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.