Katherine Mathew, MD
NPI 1144859711 · Family Medicine Physician · Norwalk, CT
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Mathew, MD is a Family Medicine Physician provider in Norwalk, CT (NPI 1144859711).
Provider details
- NPI number
- 1144859711
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 75499 (CT)
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
6 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
194 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 | 94 | $134 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 63 | $95 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 20 | $175 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 17 | $15 |
Typical Medicare-allowed amounts for these services range $15–$175 (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 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 163 | 63 |
| Amlodipine Besylate | 89 | 40 |
| Levothyroxine Sodium | 68 | 25 |
| Rosuvastatin Calcium | 63 | 28 |
| Metformin Hcl | 58 | 22 |
| Omeprazole | 53 | 17 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-06
- Last updated
- 2023-08-30
- Certified
- 2023-08-30
Frequently asked questions
- What is Katherine Mathew's NPI number?
- Katherine Mathew's National Provider Identifier (NPI) is 1144859711, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Mathew's specialty?
- Katherine Mathew is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Mathew located?
- Katherine Mathew's practice location on file with NPPES is 637 West Ave, Norwalk, CT 06850-4004.
- What is Katherine Mathew's phone number?
- The practice phone number listed in the NPPES registry for Katherine Mathew is (203) 276-7870.
- Does Katherine Mathew accept Medicare?
- Katherine Mathew is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Mathew's NPI active?
- Yes — Katherine Mathew's NPI (1144859711) is active in the NPPES registry as of the last update on 2023-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.