Dr. Howard Mark Hack, MD
- Medicare services, 2023
- 108
- Part D claims, 2024
- 11
- Hospital affiliations
- 2
- Industry payments
- $2,300
- Medical groups
- 3
- Practice address
- 3601 S 6th Ave, Tucson, AZ 85723
- Practice phone
- Call (702) 341-3152
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Southern Arizona VA Health Care System
Tucson, Arizona
Find Dr. Hack's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Howard Mark Hack is a gastroenterologist in Tucson, Arizona
Dr. Hack practices at Southern Arizona VA Health Care System in Tucson, Arizona.
Dr. Hack's NPI, 1952483786, was assigned on October 20, 2006. Dr. Hack graduated from Washington University School of Medicine in 1988. Dr. Hack holds North Dakota license 13875.
- NPI
- 1952483786NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335197136
- NPI enumeration date
- October 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (702) 341-3152
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Howard Mark Hack practices at Southern Arizona VA Health Care System in Tucson, Arizona
Dr. Hack's primary practice is Southern Arizona VA Health Care System, at 3601 S 6th Ave, Tucson, AZ 85723 in Pima County. The practice phone is (702) 341-3152.
- Southern Arizona VA Health Care System3601 S 6th Ave, Tucson, AZ 85723 · Pima CountyPhone(702) 341-3152
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Howard Mark Hack is affiliated with 3 sites of care and 3 medical groups
Dr. Hack's primary practice is Southern Arizona VA Health Care System in Tucson, Arizona. Dr. Hack is also affiliated with Baptist Health Medical Center-Conway. The medical group on file is Adobe Gastroenterology. Dmand AI also links Dr. Hack to 1 more hospital and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Howard Mark Hack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hack practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Southern Arizona VA Health Care System | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Howard Mark Hack is one of 380 gastroenterologists in Arizona
Gastroenterology is Dr. Hack's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Hack's licenses on file in 2 states: North Dakota and Wisconsin.
Specialties and state licenses
- Gastroenterology, North DakotaPrimary
- Wisconsin license
Gastroenterologists near Dr. Hack
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Howard Mark Hack billed Medicare for 108 services in 2023
CMS data shows 108 Medicare services from Dr. Hack across 5 procedure codes in 2023. Medicare paid $9,833 for them.
Dr. Hack's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 4902023: 8183%
- Surgery
- 2022: 5042023: 2795%
- Other services
- 2022: 202023: 0100%
Where Dr. Hack's Medicare services took place, 2023
- In an office6863%
- In a facility4037%
Dr. Hack compared with the Arizona median for gastroenterologists, 2023
- Dr. Hack
- Arizona median
- Medicare services
- 108vs 50879% below
- Part D claims
- 203vs 31035% below
Medians across 369 gastroenterologists in Arizona with Dmand AI profiles that report each measure.
Dr. Hack's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Hack?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hack and other gastroenterologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Howard Mark Hack's patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Dr. Hack's median patient age at 63, with 27% women.
Dr. Hack's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women27%
- Men64%
Source: Dmand AI Patient Panel Data
Dr. Howard Mark Hack wrote 11 Medicare Part D claims in 2024
In 2024, Dr. Hack wrote 11 Medicare Part D claims. 100% of them were for generic drugs. They cover 7 drugs, with $19,077 in total drug cost. In 2022, CMS named 497 claims across 15 drugs.
Dr. Hack's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 4972023: 20359%
Drugs named by CMS: 7 in 2023, 15 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Howard Mark Hack takes part in Medicare
Dr. Hack accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Howard Mark Hack received $2,300 in industry payments from 2016 to 2025
CMS Open Payments shows 94 general payments to Dr. Hack from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $1,015.
General payments to Dr. Hack by program year, 2016 to 2025
Companies that paid Dr. Hack the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Howard Mark Hack graduated from Washington University School of Medicine
Dr. Hack graduated from Washington University School of Medicine in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Howard Mark Hack's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Howard Mark Hack
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Howard Mark Hack's NPI number?
Dr. Howard Mark Hack's NPI number is 1952483786. It was assigned on October 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Howard Mark Hack?
Dr. Howard Mark Hack is a gastroenterologist in Tucson, Arizona. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Howard Mark Hack practice?
Dr. Hack practices at 3601 S 6th Ave, Tucson, AZ 85723. Dr. Hack's primary practice is Southern Arizona VA Health Care System in Tucson, Arizona. Dmand AI also links Dr. Hack to 1 hospital and 2 medical groups.
What is Dr. Howard Mark Hack's office phone number?
The practice phone on file for Dr. Hack is (702) 341-3152.
What is Dr. Howard Mark Hack's medical license number?
Dr. Hack holds North Dakota license 13875, one of the licenses on file in 2 states.
Which states has Dr. Howard Mark Hack been licensed in?
Dmand AI has state licenses on file for Dr. Hack in North Dakota and Wisconsin.
Which hospitals is Dr. Howard Mark Hack affiliated with?
Dr. Hack is affiliated with Baptist Health Medical Center-Conway. Dmand AI links Dr. Hack to 1 more hospital.
What medical group is Dr. Howard Mark Hack part of?
Dr. Hack is linked to Adobe Gastroenterology. Dmand AI links Dr. Hack to 2 more medical groups.
Does Dr. Howard Mark Hack accept Medicare?
Yes. CMS data shows Dr. Hack billed Medicare for 108 services in 2023, and Dr. Hack accepts Medicare assignment.
What services does Dr. Howard Mark Hack bill to Medicare?
In 2023, Dr. Hack's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and surgery: digestive system (45385).
Show 4 more questionsShow fewer questions
Where did Dr. Howard Mark Hack go to medical school?
Dr. Hack graduated from Washington University School of Medicine in 1988.
What drugs does Dr. Howard Mark Hack prescribe most?
In 2023 Medicare Part D data, Dr. Hack's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Clenpiq.
Has Dr. Howard Mark Hack received payments from drug or device companies?
CMS Open Payments shows $2,300 in general payments to Dr. Hack from 24 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Howard Mark Hack been practicing?
Dr. Hack graduated from medical school in 1988, 38 years ago.
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