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.

IndividualActiveAccepts Medicare

Cassandra Muxen, MD

NPI 1346744513 · Internal Medicine Physician · North Haven, CT

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)

Practice location

190 Universal Drive

North Haven, CT 06473

Phone: (203) 694-7550

Street-level locationGet directions

More CT providers

Mailing address

1290 Silas Deane Hwy

Wethersfield, CT 06109-4337

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 071967 (CT)
Allopathic & Osteopathic Physicians
Internal Medicine Physician207R00000XLicense 325226 (LA)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(58/100 index)

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

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.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)