Physician Profile
Unclaimed ProfileAbout ZACK
David Zack, D.O. practices gastroenterology in Toledo, OH. David is a 1992 graduate of Philadelphia College of Osteopathic Medicine. According to Medicare claims data, David cared for 663 Medicare patients across 735 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (419) 471-1317
- Email not available
Practice Locations
4841 MONROE ST SUITE 110
Toledo, OH 43623
Procedures Most Often Billed to Medicare
735 services · 663 patients · 15 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
91 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
60 |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
40 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
39 |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
26 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
162 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
62 |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
54 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
48 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
44 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other gastroenterology specialists at this location 4
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other gastroenterology specialists in Toledo 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Philadelphia College of Osteopathic Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1992 at Philadelphia College of Osteopathic Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 8
Providers in OH who bill this service to Medicare most often.
Common questions
What is Dr. Zack's specialty?
Dr. Zack is a gastroenterology in Toledo, OH. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GASTROENTEROLOGY”.
NPI registry
Where can I find Dr. Zack?
Dr. Zack is listed at 4841 MONROE ST SUITE 110, Toledo, OH 43623. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Zack?
The number on file is (419) 471-1317. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Zack's NPI number?
Dr. Zack's National Provider Identifier is 1407955008. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Zack's medical education?
Dr. Zack attended Philadelphia College of Osteopathic Medicine, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Zack been practicing?
Dr. Zack has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Zack known for?
According to Medicare billing data, Dr. Zack performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare and diagnostic exam of large bowel using a flexible endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Zack confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Zack. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.