REX L MAHNENSMITH M.D.
NPI 1760466528
Internal Medicine in Waterbury, CT

Active since December 05, 2005PECOS EnrolledAccepts Medicare Assignment
80 PHOENIX AVE, WATERBURY, CT 06702(203) 756-8021(203) 596-9038 Get Directions Write a Review

NPPES record last updated: October 22, 2015. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Rex L Mahnensmith M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

REX L MAHNENSMITH M.D. (NPI 1760466528) is an individual internal medicine provider in Waterbury, Connecticut, licensed in Connecticut (021731) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (1977).

NPPES Registry Identity

NPI1760466528
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameREX L MAHNENSMITHCredential: M.D.
Location Address80 PHOENIX AVEWaterbury, CT 06702-1418
Mailing Address80 Phoenix AveWaterbury, CT 06702-1418 · (203) 756-8021 · Fax (203) 596-9038
Fax(203) 596-9038
Sole ProprietorNo
Medical School CMSYale University School Of MedicineGraduated 1977
Enumeration DateDecember 5, 2005
Last NPPES UpdateOctober 22, 2015
NPI 1760466528 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in CT · 021731
Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedInternal Medicine · NephrologyTaxonomy 207RN0300X · License 021731 (CT)
80 PHOENIX AVE, Waterbury, CT 06702

Other Identifiers 3

Medicare UPINC90354
Medicare ID-Type Unspecified390000097CT
Medicaid001217314CT

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Rex L Mahnensmith M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8123142049
PECOS Enrollment IDI20100830000814
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
48 services34 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
45 services27 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
35 services35 patients
Assessment of emotional or behavioral problems 96127
Assessment of emotional or behavioral problems involves a thorough evaluation of your feelings, thoughts, and behaviors. It's a process where professionals study patterns over time to identify potential issues like anxiety, depression, or other mental health conditions.
22 services13 patients
Annual depression screening, 5 to 15 minutes G0444
An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.
18 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06702 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Dentist
80 PHOENIX AVE, SUITE 305
WATERBURY, CT 06702
Internal Medicine
80 PHOENIX AVE, SUITE 303
WATERBURY, CT 06702
Nurse Practitioner (Family)
80 PHOENIX AVE
WATERBURY, CT 06702
Social Worker
80 PHOENIX AVE
WATERBURY, CT 06702
Nurse Practitioner (Family)
80 PHOENIX AVE
WATERBURY, CT 06702
Social Worker (Clinical)
80 PHOENIX AVE, SUITE 201
WATERBURY, CT 06702
Family Medicine
80 PHOENIX AVE
WATERBURY, CT 06702
Dentist
80 PHOENIX AVE, SUITE 305
WATERBURY, CT 06702

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Rex Mahnensmith's NPI number?

The NPI number for Rex Mahnensmith is 1760466528. It was assigned to this individual provider in the NPPES registry on December 5, 2005.

Where is Rex Mahnensmith located?

Rex Mahnensmith practices at 80 Phoenix Ave, Waterbury, CT 06702. The listed phone number is (203) 756-8021.

What is Rex Mahnensmith's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Rex Mahnensmith enrolled in Medicare?

Yes. Rex Mahnensmith is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Rex Mahnensmith was last updated on October 22, 2015. NPI Profile syncs with the weekly NPPES data releases published by CMS.