DR. HOWARD MARK HACK M.D.
NPI 1952483786
Internal Medicine - Gastroenterology in Grand Forks, ND
About Dr. Howard Mark Hack M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HOWARD MARK HACK M.D. (NPI 1952483786) is an individual gastroenterology provider in Grand Forks, North Dakota, licensed in North Dakota (13875) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Washington University School Of Medicine (1988).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted 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. Howard Mark Hack 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.
Medicare Billing Reassignments
3Medicare enrollment records show Howard Hack reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Russellville, AR 72801
- Reassigned Medicare billing, Arkansas enrollment
- 140 clinicians in this Medicare group
Little Rock, AR 72205
- Reassigned Medicare billing, Arkansas enrollment
- 7 clinicians in this Medicare group
Tucson, AZ 85712
- Reassigned Medicare billing, Arizona enrollment
- 11 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 58201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
GRAND FORKS, ND 58201
GRAND FORKS, ND 58201
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 Howard Hack's NPI number?
The NPI number for Howard Hack is 1952483786. It was assigned to this individual provider in the NPPES registry on October 20, 2006.
Where is Howard Hack located?
Howard Hack practices at 1300 S Columbia Rd, Grand Forks, ND 58201. The listed phone number is (701) 780-5000.
What is Howard Hack's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Howard Hack enrolled in Medicare?
Yes. Howard Hack 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 organizations bill Medicare for Howard Hack's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Howard Hack reassigns Medicare benefits to 3 organizations: Arkansas Health Group (Russellville, AR), Pinnacle Gastroenterology Associates PLLC (Little Rock, AR) and Adobe Gastroenterology, PC (Tucson, AZ). Each 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 Howard Hack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Howard Hack accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 1 other insurer list Howard Hack 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 Howard Hack was last updated on May 5, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Dr. Howard Mark Hack, M.D. · NPI 1952483786
Gastroenterology physician in Grand Forks, North Dakota. Individual provider, active in the CMS NPPES registry since October 20, 2006.
## Identity
- **NPI:** 1952483786 (Entity type: Individual)
- **Enumerated:** October 20, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 13875 (North Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 1300 S COLUMBIA RD, Grand Forks, ND 58201-4012
- **Phone:** (701) 780-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Arkansas Health Group (NPI 1780367060, Russellville, AR); Pinnacle Gastroenterology Associates PLLC (NPI 1003642166, Little Rock, AR); Adobe Gastroenterology, PC (NPI 1750595997, Tucson, AZ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Washington University School Of Medicine, class of 1988
## Record status
- **NPPES last updated:** May 5, 2017
- **Other identifiers:** Medicare PIN N722095 (ND)
---
Source: [NPI Profile](https://npiprofile.com/npi/1952483786) · Data from the CMS NPPES public registry.