Cassandra Muxen, MD
NPI 1346744513 · Internal Medicine Physician · North Haven, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cassandra Muxen, MD is a Internal Medicine Physician provider in North Haven, CT (NPI 1346744513).
Provider details
- NPI number
- 1346744513
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 325226 (LA)
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
8 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
743 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 | 229 | $132 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 120 | $80 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 95 | $135 |
| Hemoglobin A1c Level83036 | 68 | $10 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 64 | $94 |
| Administration of Influenza Virus VaccineG0008 | 41 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 117 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 371 | 165 |
| Amlodipine Besylate | 324 | 143 |
| Rosuvastatin Calcium | 321 | 128 |
| Levothyroxine Sodium | 295 | 112 |
| Lisinopril | 189 | 73 |
| Losartan Potassium | 168 | 67 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-03-21
- Last updated
- 2022-08-19
- Certified
- 2022-08-16
Frequently asked questions
- What is Cassandra Muxen's NPI number?
- Cassandra Muxen's National Provider Identifier (NPI) is 1346744513, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cassandra Muxen's specialty?
- Cassandra Muxen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cassandra Muxen located?
- Cassandra Muxen's practice location on file with NPPES is 190 Universal Drive, North Haven, CT 06473.
- What is Cassandra Muxen's phone number?
- The practice phone number listed in the NPPES registry for Cassandra Muxen is (203) 694-7550.
- Does Cassandra Muxen accept Medicare?
- Cassandra Muxen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cassandra Muxen's NPI active?
- Yes — Cassandra Muxen's NPI (1346744513) is active in the NPPES registry as of the last update on 2022-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.