NPPES file of Aug 9, 2026

Mark G. Griffin, MD

Specialist · Lincoln, NE

Mark G. Griffin, MD is a specialist with a practice address in Lincoln, Nebraska, and NPI 1164416251, issued on Sep 6, 2005. Check the license (Nebraska 19772, as entered in NPPES) with the Nebraska board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164416251
Name
Mark G. Griffin
Credential
MD
Primary taxonomy
Specialist 174400000X
License number
19772 NE
Self-reported in NPPES; status is on the state search
Practice location
4545 R St, Lincoln, NE 68503
Phone
(402) 465-4545
Enumerated
Sep 6, 2005
Record last updated
Sep 18, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(402) 465-3621
Medicare enrollment
Enrolled (PECOS I20040525000702); accepts Medicare assignment
Medical or professional school
University Of Missouri, Kansas City, School Of Medicine, 1988
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 4545 R St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Clark Antonson, MDGastroenterology Physician1831182757
  2. Samantha Arnett, APRNNurse Practitioner1083400832
  3. Catherine Bateman, PAPhysician Assistant1003899949
  4. Erik Bowman, MDGastroenterology Physician1942434659
  5. Megan BurkleNurse Practitioner1457198665
  6. Andrew Coen, MDGastroenterology Physician1346234440

Verify Mark G. Griffin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Nebraska board licenses this profession
    Search for license 19772
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Nebraska license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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23% more Medicare Part D claims than the average specialist in 2024

1,695 Medicare Part D claims for 749 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.

  1. Mark Griffin1,695
  2. Specialty average1,380

Most prescribed

  1. Sod Sulf-Potass Sulf-Mag Sulf419 claims
  2. Omeprazole327 claims
  3. Pantoprazole Sodium183 claims
  4. Famotidine80 claims
  5. Colestipol Hcl46 claims
  6. Gavilyte-G38 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualitynot scored (reweighted)
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $988.05

42 payments; by number, the most common kind was food and beverage; the largest payer was Aimmune Therapeutics, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Griffin$988.05
  2. Specialty average$4,760.79

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Gastroenterology Specialties PCLincoln, NE

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark G. Griffin among 184 specialist records in Nebraska

Mark G. Griffin, MD is one of 184 specialist records with a practice address in Nebraska. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 84% newer
  • In a Medicare fileYes · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 8% of these records are
  • Graduated1988 · median 1988 among the 15 with a school on file
  • Record last updated2014 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Nebraska practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in Nebraska

There are 184 specialist records in Nebraska.

The 8 specialist records with the nearest ZIP codes

  1. David Dyke, MDLincoln, NE 685031538153622
  2. Paul Petersen, MDLincoln, NE 685031245224336
  3. John Buckley, M.D.Lincoln, NE 685021699723817
  4. Joseph Camarata, M.D., D.M.D.Lincoln, NE 685021700862810
  5. Mitchell Henry, M.D., D.D.S.Lincoln, NE 685021215927181
  6. Melissa Renn, P.T.Lincoln, NE 685021659388304
  7. Shataun StewartLincoln, NE 685021588505606
  8. Rick Windle, M.D.Lincoln, NE 685021154303071

Common questions

What is Mark G. Griffin, MD's NPI number?

Mark G. Griffin, MD's National Provider Identifier (NPI) is 1164416251, issued on Sep 6, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Mark G. Griffin, MD located?

The NPPES record lists a practice address at 4545 R St, Lincoln, NE, 68503. Phone: (402) 465-4545. Providers update this record themselves, so call before visiting.

How can I verify Mark G. Griffin, MD's license?

NPPES lists Nebraska license number 19772, as entered by the provider. Search the Nebraska board that licenses this profession; the NPPES record confirms identity only.

How much does Mark G. Griffin, MD prescribe under Medicare Part D?

In 2024, Mark G. Griffin, MD had 1,695 Medicare Part D claims for 749 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.

What is Mark G. Griffin, MD's MIPS final score?

The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.