DR. MARK G GRIFFIN MD
NPI 1164416251
Specialist in Lincoln, NE

Q: What is Mark Griffin's NPI number?

The NPI number for Mark Griffin is 1164416251. It was assigned to this individual provider in the NPPES registry on September 6, 2005.

Q: What is Mark Griffin's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Griffin was last updated on September 18, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 September 06, 2005PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

4545 R ST, LINCOLN, NE 68503(402) 465-4545(402) 465-3621 Get Directions Write a Review

NPPES record last updated: September 18, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Mark G Griffin Md NPPES

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

DR. MARK G GRIFFIN MD (NPI 1164416251) is an individual specialist in Lincoln, Nebraska, licensed in Nebraska (19772) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Bryan Medical Center, and is a graduate of University Of Missouri, Kansas City, School Of Medicine (1988).

NPPES Registry Identity

NPI1164416251

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameDR. MARK G GRIFFINCredential: MD

Location Address4545 R STLincoln, NE 68503-3723

Mailing Address4545 R StLincoln, NE 68503-3723 · (402) 465-4545 · Fax (402) 465-3621

Phone(402) 465-4545

Fax(402) 465-3621

Sole ProprietorNo

Medical School CMSUniversity Of Missouri, Kansas City, School Of MedicineGraduated 1988

Enumeration DateSeptember 6, 2005

Last NPPES UpdateSeptember 18, 2014

✔ NPI 1164416251 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in NE · 19772

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

4545 R ST, Lincoln, NE 68503

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Other Identifiers 2

Medicare PIN266634GRNE

Medicare UPINF23856NE

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 G Griffin Md 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 ID6305827593

PECOS Enrollment IDI20040525000702

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 Griffin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Gastroenterology Specialties, P.C.

1.1 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 20

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.

7,200 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.

1,980 services19 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.

393 services392 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.

155 services151 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.

149 services77 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.

77 services70 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.

74 services74 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.

67 services67 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.

61 services58 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.

60 services60 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.

49 services46 patients

Measurement of hydrogen in breath to test for stomach and bowel symptoms 91065

This test involves breathing into a bag to measure hydrogen levels in your breath. High levels can indicate issues with food digestion or absorption in your stomach or intestines. It's non-invasive, painless, and helps diagnose certain gastrointestinal conditions.

42 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.

34 services34 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.

33 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.

33 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.

29 services26 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.

26 services24 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.

25 services25 patients

Dilation of esophagus 43450

Dilation of the esophagus is a procedure aimed to stretch or open up your esophagus (the tube connecting your mouth to your stomach) when it's narrow. It helps to improve swallowing and alleviate discomfort. It's typically performed using a flexible tube or balloon, under sedation.

21 services20 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

20 services14 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

Columbus Community Hospital, Inc

Acute Care Hospitals · Columbus, NE

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number280111

Location4600 38th StColumbus, NE 68601 · Platte County

Emergency services Birthing friendly

Memorial Health Care Systems

Critical Access Hospitals · Seward, NE

OwnershipVoluntary non-profit - Private

CMS Certification Number281339

Location300 North Columbia AveSeward, NE 68434 · Seward County

Emergency services

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.

100/100

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

Scored as part of a group practice

Promoting Interoperability

100

Improvement Activities

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.

MRS. CATHERINE M BATEMAN PA

Physician Assistant

4545 R ST, SUITE 100
LINCOLN, NE 68503

Lancaster County (402) 465-4545

DR. MATTHEW J HRNICEK MD

Internal Medicine (Gastroenterology)

4545 R ST
LINCOLN, NE 68503

Lancaster County (402) 465-4545

SAMANTHA LYNN ARNETT APRN

Nurse Practitioner

4545 R ST
LINCOLN, NE 68503

Lancaster County (402) 465-4545

GASTROENTEROLOGY SPECIALTIES, P.C.

Specialist

4545 R ST
LINCOLN, NE 68503

Lancaster County (402) 465-4545

DR. GARY W VARILEK MD

Internal Medicine (Gastroenterology)

4545 R ST
LINCOLN, NE 68503

Lancaster County (402) 465-4545

SALLY KNOOIHUIZEN MD

Internal Medicine (Gastroenterology)

4545 R ST
LINCOLN, NE 68503

Lancaster County (402) 465-4545

DR. CYNTHIA R HAMMOND APRN DNP

Nurse Practitioner (Family)

4545 R ST
LINCOLN, NE 68503

Lancaster County (402) 465-4545

ALEXANDRA LEIGH JOHNSON PA

Physician Assistant (Medical)

4545 R ST, 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 Griffin's NPI number?

The NPI number for Mark Griffin is 1164416251. It was assigned to this individual provider in the NPPES registry on September 6, 2005.

Where is Mark Griffin located?

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

What is Mark Griffin's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Mark Griffin enrolled in Medicare?

Yes. Mark Griffin 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 Griffin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Griffin 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 Griffin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Griffin 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 and 1 other insurer list Mark Griffin 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 Griffin affiliated with any hospitals?

According to CMS data, Mark Griffin is affiliated with Bryan Medical Center, The Nebraska Medical Center, Chi Health St. Elizabeth, Columbus Community Hospital, Inc and Memorial Health Care Systems.

When was this NPI record last updated?

The NPPES record for Mark Griffin was last updated on September 18, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.