NPPES file of Aug 9, 2026

Geronimo Sahagun, MD

Gastroenterology Physician · Anchorage, AK

Geronimo Sahagun, MD is a gastroenterology physician with a practice address in Anchorage, Alaska, and NPI 1043292865, issued on Nov 17, 2005. Check the license (Alaska 3857, as entered in NPPES) on the Alaska State Medical Board; 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
1043292865
Name
Geronimo Sahagun
Credential
MD
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
3857 AK
Self-reported in NPPES; status is on the state search
Practice location
2841 Debarr Road, Anchorage, AK 99508
Phone
(907) 276-2811
Enumerated
Nov 17, 2005
Record last updated
Mar 25, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(907) 276-2810
Medicaid ID
MD38571 AK
Medicare enrollment
Enrolled (PECOS I20040625001001); accepts Medicare assignment
Medical or professional school
University Of Iowa, Rj & L Carver College Of Medicine, 1990
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 2841 Debarr Road

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

  1. Beth Baker, MDPulmonary Disease Physician1184606956
  2. Paul Gionet, RPH.Pharmacist1720032741
  3. Douglas Haghighi, MDGastroenterology Physician1780608406
  4. Steven Ingle, MDGastroenterology Physician1922070218
  5. David Peach, MDGastroenterology Physician1982686754
  6. Charles Shannon, MDGastroenterology Physician1619959384

Verify Geronimo Sahagun in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersAlaska State Medical Board
    Search for license 3857
    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
Open the Alaska 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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2.4 times the Medicare Part D claims of the average gastroenterology physician in 2024

1,914 Medicare Part D claims for 362 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.

  1. Geronimo Sahagun1,914
  2. Specialty average811

Most prescribed

  1. Omeprazole504 claims
  2. Sucralfate400 claims
  3. Pantoprazole Sodium159 claims
  4. Famotidine79 claims
  5. Budesonide Dr72 claims
  6. Mesalamine57 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): 78.5 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. Qualityout of 100 · 30% of the final score86.2
  2. Costout of 100 · 30%42.0
  3. Promoting interoperabilitynot scored (reweighted)
  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).

Bills Medicare through one group practice

  1. Internal Medicine Associates LLCAnchorage, AK

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

Geronimo Sahagun among 25 gastroenterology physician records in Alaska

Geronimo Sahagun, MD is one of 25 gastroenterology physician records with a practice address in Alaska. 84% 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, 76% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1990 · median 2001 among the 16 with a school on file
  • Record last updated2019 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Alaska practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Alaska

There are 25 gastroenterology physician records in Alaska.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Ronald Boisen, M.D., P.C.Anchorage, AK 995081114946076
  2. Richard Farleigh, M.D.Anchorage, AK 995081033130935
  3. Douglas Haghighi, MDAnchorage, AK 995081780608406
  4. Steven Ingle, MDAnchorage, AK 995081922070218
  5. Daryl McClendon, M.D., P.C.Anchorage, AK 995081013945948
  6. Jeffrey Molloy, M.D.Anchorage, AK 995081306833611
  7. David Peach, MDAnchorage, AK 995081982686754
  8. Michelle Randolph, MDAnchorage, AK 995081346209756

Common questions

What is Geronimo Sahagun, MD's NPI number?

Geronimo Sahagun, MD's National Provider Identifier (NPI) is 1043292865, issued on Nov 17, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Geronimo Sahagun, MD located?

The NPPES record lists a practice address at 2841 Debarr Road, Anchorage, AK, 99508. Phone: (907) 276-2811. Providers update this record themselves, so call before visiting.

How can I verify Geronimo Sahagun, MD's license?

NPPES lists Alaska license number 3857, as entered by the provider. Search the Alaska State Medical Board at https://www.commerce.alaska.gov/web/cbpl/ProfessionalLicensing/StateMedicalBoard.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Geronimo Sahagun, MD prescribe under Medicare Part D?

In 2024, Geronimo Sahagun, MD had 1,914 Medicare Part D claims for 362 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

What is Geronimo Sahagun, MD's MIPS final score?

The 2023 MIPS final score is 78.5 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.