DR. MARK AARON WELLS M.D.
NPI 1932319316
Internal Medicine - Gastroenterology in Lincoln, NE

Q: What is Mark Wells's NPI number?

The NPI number for Mark Wells is 1932319316. It was assigned to this individual provider in the NPPES registry on May 23, 2007.

Q: What is Mark Wells'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 Mark Wells was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 23, 2007PECOS EnrolledAccepts Medicare Assignment

92.39/100

CMS Quality Rating

4545 R ST STE 100, LINCOLN, NE 68503(402) 465-4545(402) 465-9011 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 21, 2022, Jun 14, 2017 (2 updates tracked since 2017).

On this page

About Dr. Mark Aaron Wells M.d. NPPES

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

DR. MARK AARON WELLS M.D. (NPI 1932319316) is an individual gastroenterology provider in Lincoln, Nebraska, licensed in Nebraska (30063) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Bryan Medical Center, and is a graduate of University Of Arkansas College Of Medicine (2007).

NPPES Registry Identity

NPI1932319316

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. MARK AARON WELLSCredential: M.D.

Location Address4545 R ST STE 100Lincoln, NE 68503-3799

Mailing Address4545 R St Ste 100Lincoln, NE 68503-3799 · (402) 465-4545 · Fax (402) 465-9011

Phone(402) 465-4545

Fax(402) 465-9011

Sole ProprietorNo

Medical School CMSUniversity Of Arkansas College Of MedicineGraduated 2007

Enumeration DateMay 23, 2007

Last NPPES UpdateJuly 21, 20222 updates tracked since enumeration

✔ NPI 1932319316 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in NE · 30063

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.

Also ListedInternal MedicineTaxonomy 207R00000X · License E-6563 (AR)

4545 R ST STE 100, Lincoln, NE 68503

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Sunflower Health Plan, Ambetter Health, Ambetter Health of Delaware and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mark Aaron Wells 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 ID6002947405

PECOS Enrollment IDI20170616001615

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.

Medicare Billing Reassignment

Medicare enrollment records show Mark Wells reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Gastroenterology Specialties, P.C.

1.2 mi

Specialist

4545 R ST
Lincoln, NE 68503

Reassigned Medicare billing, Nebraska enrollment
Medicare enrollment name: Gastroenterology Specialties PC
60 clinicians in this Medicare group

NPI 1083747380 (402) 465-4545

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 19

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.

Injection, vedolizumab, intravenous, 1 mg J3380

Vedolizumab is a medication given via injection. It's used to treat certain bowel conditions (such as Crohn's disease, ulcerative colitis) by reducing inflammation. It works by blocking a certain protein that causes this inflammation.

8,700 services23 patients

Injection, infliximab, excludes biosimilar, 10 mg J1745

Infliximab is a medication given via injection to treat certain autoimmune conditions. It works by blocking the action of a substance in your body that causes inflammation. Each dose is based on your medical condition and response to treatment.

1,270 services20 patients

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.

243 services243 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.

78 services76 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

54 services38 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.

46 services46 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.

40 services40 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.

40 services40 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

34 services33 patients

Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365

This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.

34 services28 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.

29 services25 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

27 services22 patients

Administration of chemotherapy into vein, each additional hour 96415

Chemotherapy is a treatment method that uses drugs to destroy cancer cells. The drugs are administered into a vein, usually in the arm. Each additional hour of chemotherapy allows for more of the medication to enter your bloodstream to fight against the cancer cells.

27 services22 patients

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.

23 services23 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

18 services18 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

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.

13 services13 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.

11 services11 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.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Bryan Medical Center

Acute Care Hospitals · Lincoln, NE

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number280003

Location1600 South 48th StLincoln, NE 68506 · Lancaster County

Emergency services Birthing friendly

The Nebraska Medical Center

Acute Care Hospitals · Omaha, NE

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number280013

Location987400 Nebraska Medical CenterOmaha, NE 68198 · Douglas County

Emergency services Birthing friendly

Chi Health St. Elizabeth

Acute Care Hospitals · Lincoln, NE

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number280020

Location555 South 70th StLincoln, NE 68510 · Lancaster County

Emergency services Birthing friendly

Crete Area Medical Center

Critical Access Hospitals · Crete, NE

OwnershipVoluntary non-profit - Private

CMS Certification Number281354

LocationP O Box 220, 2910 Betten DrCrete, NE 68333 · Saline County

Emergency services Birthing friendly

Beatrice Community Hospital & Health Center, Inc

Critical Access Hospitals · Beatrice, NE

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number281364

LocationP O Box 278, 4800 Hospital ParkwayBeatrice, NE 68310 · Gage County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 68503 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

$121.35 typical visit price

range $52.69 – $160.21

Typical copayment $30.33 (range $13.17 – $40.05)

Most-billed visit code 99204

Established Patient

$93.55 typical visit price

range $16.90 – $131.25

Typical copayment $23.38 (range $4.22 – $32.81)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

92.39/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

84.79

Promoting Interoperability

100

Improvement Activities

Other Providers at the Same Location NPPES 6

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

MARISSA CLAIRE SJOBERG PA-C

Physician Assistant

4545 R ST STE 100
LINCOLN, NE 68503

Lancaster County (402) 465-4545

DAVID PATRICK NEWTON M.D.

Internal Medicine (Gastroenterology)

4545 R ST STE 100
LINCOLN, NE 68503

Lancaster County (402) 465-4545

JAMES ROAT JR. M.D.

Internal Medicine (Gastroenterology)

4545 R ST STE 100
LINCOLN, NE 68503

Lancaster County (402) 465-4545

SAMANTHA LYN NICE APRN

Nurse Practitioner (Family)

4545 R ST STE 100
LINCOLN, NE 68503

Lancaster County (402) 465-4545

WILLIAM JAY LAWTON II M.D.

Internal Medicine (Gastroenterology)

4545 R ST STE 100, GASTROENTEROLOGY SPECIALTIES P.C.
LINCOLN, NE 68503

Lancaster County (402) 465-4545

DR. ALEXANDER WILLIAM PRAUS MD

Internal Medicine (Gastroenterology)

4545 R ST STE 100
LINCOLN, NE 68503

Lancaster County (402) 465-4545

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 Mark Wells's NPI number?

The NPI number for Mark Wells is 1932319316. It was assigned to this individual provider in the NPPES registry on May 23, 2007.

Where is Mark Wells located?

Mark Wells practices at 4545 R St Ste 100, Lincoln, NE 68503. The listed phone number is (402) 465-4545.

What is Mark Wells's specialty?

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

Is Mark Wells enrolled in Medicare?

Yes. Mark Wells 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.

Which organization bills Medicare for Mark Wells's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Wells reassigns Medicare benefits to Gastroenterology Specialties, P.C. (Lincoln, NE). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Wells's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Wells accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Sunflower Health Plan, Blue Cross and Blue Shield of Nebraska and Oscar Insurance Company list Mark Wells 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.

Is Mark Wells affiliated with any hospitals?

According to CMS data, Mark Wells is affiliated with Bryan Medical Center, The Nebraska Medical Center, Chi Health St. Elizabeth, Crete Area Medical Center and Beatrice Community Hospital & Health Center, Inc.

When was this NPI record last updated?

The NPPES record for Mark Wells was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.