DR. JOSEPH E CASSARA M.D.
NPI 1275755290
Internal Medicine - Gastroenterology in Lafayette, CO

Q: What is Joseph Cassara's NPI number?

The NPI number for Joseph Cassara is 1275755290. It was assigned to this individual provider in the NPPES registry on May 2, 2007.

Q: What is Joseph Cassara's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Joseph Cassara was last updated on March 9, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since May 02, 2007PECOS EnrolledAccepts Medicare Assignment

1000 W SOUTH BOULDER RD, LAFAYETTE, CO 80026(303) 604-5000 Get Directions Write a Review

NPPES record last updated: March 9, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 9, 2026, May 12, 2021, Jan 17, 2020 (3 updates tracked since 2020).

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About Dr. Joseph E Cassara M.d. NPPES

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

DR. JOSEPH E CASSARA M.D. (NPI 1275755290) is an individual gastroenterology provider in Lafayette, Colorado, licensed in Colorado (46321) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS and is a graduate of University Of Vermont College Of Medicine (2001).

NPPES Registry Identity

NPI1275755290

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. JOSEPH E CASSARACredential: M.D.

Location Address1000 W SOUTH BOULDER RDLafayette, CO 80026-2752

Mailing Address15539 W 75th PlArvada, CO 80007-7957

Phone(303) 604-5000

Sole ProprietorNo

Medical School CMSUniversity Of Vermont College Of MedicineGraduated 2001

Enumeration DateMay 2, 2007

Last NPPES UpdateMarch 9, 20263 updates tracked since enumeration

NPPES CertifiedMarch 9, 2026

✔ NPI 1275755290 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CO · 46321

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

1000 W SOUTH BOULDER RD, Lafayette, CO 80026

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Other Identifiers 2

Other018852CO · Kaiser Commercial Number

Medicaid40587843CO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.Insurance ›

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

Dr. Joseph E Cassara 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 ID6103891528

PECOS Enrollment IDI20081021000774

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 14

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.

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

162 services161 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

122 services119 patients

Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito G0500

Moderate sedation is a method where a physician uses medication to help you relax during a gastrointestinal endoscopy. An independent trained observer will be present to monitor your vital signs and ensure your safety throughout the procedure. It's a common and safe practice.

83 services81 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

46 services46 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

33 services33 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

29 services29 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.

25 services24 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

23 services23 patients

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 43249

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

17 services15 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

15 services15 patients

Insertion of guide wire with dilation of esophagus using a flexible endoscope 43248

This is a procedure where a thin tube, called an endoscope, is gently passed through your mouth into your esophagus. A guide wire is then inserted to help widen any narrow areas. This helps improve swallowing and reduce discomfort.

14 services14 patients

Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43259

This procedure involves a flexible tube with a camera, called an endoscope, inserted through your mouth to examine your esophagus, stomach, and upper small bowel. An ultrasound device on the endoscope helps get detailed images. It's safe and helps diagnose various conditions.

13 services13 patients

Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43242

This procedure involves using an ultrasound to guide a needle to specific areas in the esophagus, stomach, or upper small bowel. A flexible endoscope is used to reach these areas. The needle collects a small sample for testing.

12 services11 patients

Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes 99153

This service involves a physician administering medication to lower your consciousness during a procedure. It's done for your comfort and safety. The drug's effects last about 15 minutes, so additional doses may be given as needed.

12 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80026 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

$132.55 typical visit price

range $58.06 – $174.82

Typical copayment $33.13 (range $14.51 – $43.70)

Most-billed visit code 99204

Established Patient

$102.03 typical visit price

range $18.88 – $142.79

Typical copayment $25.50 (range $4.72 – $35.69)

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.

DR. HERMAN ANDREW DAMEK M.D.

Family Medicine

1000 W SOUTH BOULDER RD, SUITE 110
LAFAYETTE, CO 80026

Boulder County (303) 415-4355

DR. STEVEN POCHRON

Physical Therapist

1000 W SOUTH BOULDER RD
LAFAYETTE, CO 80026

Boulder County (303) 415-4075

JULIA MARGARET ENGLE PT

Physical Therapist

1000 W SOUTH BOULDER RD, SUITE 210
LAFAYETTE, CO 80026

Boulder County (303) 604-4664

DR. CHRISTY TRAN KLEINKE DO

Family Medicine

1000 W SOUTH BOULDER RD, SUITE 110
LAFAYETTE, CO 80026

Boulder County (303) 415-4355

JULIE MARIE JUNGMAN

Social Worker (Clinical)

1000 W SOUTH BOULDER RD, SUITE 110
LAFAYETTE, CO 80026

Boulder County (303) 666-7555

DR. RAMU RAJU MD

Internal Medicine (Gastroenterology)

1000 W SOUTH BOULDER RD
LAFAYETTE, CO 80026

Boulder County (303) 604-5000

FELICIA ANNA SOCKOL-GUEST F. N. P.

Registered Nurse

1000 W SOUTH BOULDER RD, SUITE 110
LAFAYETTE, CO 80026

Boulder County (303) 666-7555

DR. DAUS MAHNKE M.D.

Internal Medicine (Gastroenterology)

1000 W SOUTH BOULDER RD, SUITE 200
LAFAYETTE, CO 80026

Boulder County (303) 604-5000

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 Joseph Cassara's NPI number?

The NPI number for Joseph Cassara is 1275755290. It was assigned to this individual provider in the NPPES registry on May 2, 2007.

Where is Joseph Cassara located?

Joseph Cassara practices at 1000 W South Boulder Rd, Lafayette, CO 80026. The listed phone number is (303) 604-5000.

What is Joseph Cassara's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Joseph Cassara enrolled in Medicare?

Yes. Joseph Cassara 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.

What insurance does Joseph Cassara accept?

Health plans from UnitedHealthcare list Joseph Cassara as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Joseph Cassara was last updated on March 9, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.