Timothy Quan, M.D.
NPI 1649227208 · Rheumatology Physician · South Windsor, CT
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Quan, M.D. is a Rheumatology Physician provider in South Windsor, CT (NPI 1649227208).
Provider details
- NPI number
- 1649227208
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 037380 (CT)
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,028 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) |
|---|---|---|
| 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 | 593 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 547 | $133 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 308 | $138 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 140 | $76 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 137 | $94 |
| Administration of Chemotherapy Into Vein, Each Additional Hour |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 680 | 196 |
| Prednisone | 528 | 227 |
| Methotrexate Sodiumbrand: Methotrexate | 433 | 140 |
| Allopurinol | 153 | 51 |
| Leflunomide | 122 | 38 |
| Meloxicam | 94 | 32 |
| Folic Acid | 90 | 27 |
| Etanercept |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,772 across 259 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
Additional practice locations (2)
- 399 Farmington Ave Ste Ll2Farmington, CT 06032-1936Phone: (860) 432-8400Fax: (860) 432-8430
- 2701 Tamarack AveSouth Windsor, CT 06074-5561Phone: (860) 432-8400Fax: (860) 432-8430
Registry dates
- Enumerated
- 2006-05-28
- Last updated
- 2021-06-17
- Certified
- 2021-06-17
Frequently asked questions
- What is Timothy Quan's NPI number?
- Timothy Quan's National Provider Identifier (NPI) is 1649227208, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Quan's specialty?
- Timothy Quan is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Quan located?
- Timothy Quan's practice location on file with NPPES is 1504 Sullivan Ave, South Windsor, CT 06074-2711.
- What is Timothy Quan's phone number?
- The practice phone number listed in the NPPES registry for Timothy Quan is (860) 432-8400.
- Does Timothy Quan accept Medicare?
- Timothy Quan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Quan's NPI active?
- Yes — Timothy Quan's NPI (1649227208) is active in the NPPES registry as of the last update on 2021-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.