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INTERNAL MEDICINE ASSOCIATES, LLC
NPI 1043294648
Internal Medicine - Gastroenterology in Anchorage, AK

Active since December 06, 2005
2841 DEBARR RD STE 50, ANCHORAGE, AK 99508(907) 276-2811(907) 276-2810 Get Directions Write a Review

NPPES record last updated: March 25, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Internal Medicine Associates, Llc NPPES

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

INTERNAL MEDICINE ASSOCIATES, LLC (NPI 1043294648), doing business as Internal Medicine Associates, Inc, is a healthcare organization registered as a gastroenterology in Anchorage, Alaska and active in the NPI registry since December 2005. The organization maintains a secondary practice location in Wasilla and lists Geronimo Sahagun, Managing Physician & Ceo, as its authorized official.

NPPES Registry Identity

NPI1043294648
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameINTERNAL MEDICINE ASSOCIATES, LLC
Location Address2841 DEBARR RD STE 50Anchorage, AK 99508-2945
Mailing Address2841 Debarr Road, Suite 50Anchorage, AK 99508-2932 · (907) 276-2811 · Fax (907) 276-2810
Phone(907) 276-2811
Fax(907) 276-2810
Organization SubpartNo
Authorized OfficialGeronimo SahagunManaging Physician & Ceo · (907) 276-2811
Enumeration DateDecember 6, 2005
Last NPPES UpdateMarch 25, 2019
✔ NPI 1043294648 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
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 Medicine · Endocrinology, Diabetes & MetabolismTaxonomy 207RE0101X
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X
2841 DEBARR RD STE 50, Anchorage, AK 99508
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Other Names 1

Former Legal Business NameInternal Medicine Associates, Inc

Secondary Practice Location 1

Location 13505 E Meridian Park Loop Ste 220Wasilla, AK 99654-7294 · Phone (907) 276-2811 · Fax (907) 276-2810

Other Identifiers 1

MedicaidMDG284AK

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Moda Health Plan, Inc., Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Internal Medicine Associates, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

11

Medicare enrollment records show 11 clinicians reassign Medicare billing to Internal Medicine Associates, LLC, which bills Medicare for the services they deliver. Of these, 6 practice at this address and 8 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 3

Gastroenterology8
Pulmonary Disease2
Endocrinology1

Clinicians, nearest first (11)

Douglas Haghighi, MD
Gastroenterology
NPI 1780608406
2841 DEBARR ROAD SUITE 50
Anchorage, AK 99508
(907) 276-2811
✔ PECOS✔ Accepts MedicareSame address
Steven Ingle, MD
Gastroenterology
NPI 1922070218
2841 DEBARR ROAD SUITE 50
Anchorage, AK 99508
(907) 276-2811
✔ PECOS✔ Accepts MedicareSame address
Janice Koval, MD
Endocrinology
NPI 1184606014
2841 DEBARR RD STE 50
Anchorage, AK 99508
(907) 276-2811
✔ PECOS✔ Accepts MedicareSame address
Praveen Roy, MD
Gastroenterology
NPI 1215958459
2841 DEBARR RD STE 50
Anchorage, AK 99508
(907) 276-2811
✔ PECOS✔ Accepts MedicareSame address
Geronimo Sahagun, MD
Gastroenterology
NPI 1043292865
2841 DEBARR ROAD SUITE 50
Anchorage, AK 99508
(907) 276-2811
✔ PECOS✔ Accepts MedicareSame address
Eric Tompkins, MD
Gastroenterology
NPI 1902888688
2841 DEBARR ROAD SUITE 50
Anchorage, AK 99508
(907) 276-2811
✔ PECOS✔ Accepts MedicareSame address
Gregory Gerboth, MD
Pulmonary Disease
NPI 1407838170
3300 PROVIDENCE DR STE B208
Anchorage, AK 99508
(907) 212-4090
✔ PECOS✔ Accepts Medicare1.5 mi
Marek Martynowicz, MD
Pulmonary Disease
NPI 1962581249
3260 PROVIDENCE DR STE 523
Anchorage, AK 99508
(907) 222-1725
✔ PECOS✔ Accepts Medicare1.5 mi
Michael Long
Gastroenterology
NPI 1821071317
2450 RIVERSIDE AVE
Minneapolis, MN 55454
(612) 672-6000
✔ PECOS✔ Accepts Medicare2,508 mi
William Mccray, MD
Gastroenterology
NPI 1912989781
3825 MEDICAL PARK DR STE 100
Austell, GA 30106
(470) 267-1760
✔ PECOS✔ Accepts Medicare3,393 mi
Kimberly Houghton, MD
Gastroenterology
NPI 1598101503
16817 MARVIN RD
Charlotte, NC 28277
(704) 495-6334
✔ PECOS✔ Accepts Medicare3,454 mi

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

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 Internal Medicine Associates, LLC's NPI number?

The NPI number for Internal Medicine Associates, LLC is 1043294648. It was assigned to this organization in the NPPES registry on December 6, 2005. The provider was formerly known as Internal Medicine Associates, Inc.

Where is Internal Medicine Associates, LLC located?

Internal Medicine Associates, LLC is located at 2841 Debarr Rd Ste 50, Anchorage, AK 99508. The listed phone number is (907) 276-2811.

What is Internal Medicine Associates, LLC's specialty?

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

Is Internal Medicine Associates, LLC enrolled in Medicare?

Yes. Internal Medicine Associates, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Internal Medicine Associates, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 11 clinicians in 3 Medicare specialties reassign their Medicare billing to Internal Medicine Associates, LLC. A 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 the clinician's services. The largest specialties are Gastroenterology (8), Pulmonary Disease (2) and Endocrinology (1). Of these, 6 practice at this address and 8 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Internal Medicine Associates, LLC accept?

Health plans from Moda Health Plan, Inc. and Premera Blue Cross Blue Shield of Alaska list Internal Medicine Associates, LLC 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 Internal Medicine Associates, LLC was last updated on March 25, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.